Journal articles on the topic 'Reservoirs – Management'
To see the other types of publications on this topic, follow the link: Reservoirs – Management.
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 journal articles for your research on the topic 'Reservoirs – Management.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Wilopo, Wahyu, Hendy Setiawan, and Doni Prakasa Eka Putra. "Evaluation of Artificial Reservoir Management in Sleman Regency, Yogyakarta Special Region." Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan 17, no. 3 (October 14, 2020): 205–14. http://dx.doi.org/10.14710/presipitasi.v17i3.205-214.
Full textAbstract:
The Indonesian government has promoted reservoir (embung) development programs throughout Indonesia. This program is primarily designed at supporting agricultural irrigation, especially in the dry season. However, in its implementation, there are often many obstacles both in technical and management, causing the main purpose of the reservoir construction cannot be achieved optimally. Therefore, this study aims to evaluate the condition of the reservoir located in Sleman Regency, Yogyakarta Special Region, in terms of physical, institutional, and management constraints. The study was conducted through a direct survey of 9 reservoirs and interviews with managers and residents around the reservoir. The results showed that two reservoirs have small damage in the reservoir building, three reservoirs do not yet have managers, and three reservoirs have not functioned following the purpose of reservoirs development. The obstacle often found in managing reservoirs is the unclear structure for the management of the reservoir, and the existing management is not effectively working. Therefore, the regulation of using reservoir water is not available. It is necessary to have a management organization involving the community and village government where the reservoir is located and also community beneficiaries of agricultural irrigation to guarantee its function and sustainability.
2
Daus, Milan, Katharina Koberger, Kaan Koca, Felix Beckers, Jorge Encinas Fernández, Barbara Weisbrod, Daniel Dietrich, et al. "Interdisciplinary Reservoir Management—A Tool for Sustainable Water Resources Management." Sustainability 13, no. 8 (April 18, 2021): 4498. http://dx.doi.org/10.3390/su13084498.
Full textAbstract:
Reservoirs are a common way to store and retain water serving for a multitude of purposes like storage of drinking and irrigation water, recreation, flood protection, navigation, and hydropower production, and have been built since centuries. Today, few reservoirs serve only one purpose, which requires management of present demands and interests. Since each reservoir project will cause negative impacts alongside desired advantages both on a local, regional and global scale, it is even more urgent to develop a common management framework in an attempt to mitigate negative impacts, incorporate different demands and make them visible within the discourse in order to avoid conflicts from early on. The scientific publications on reservoirs are manifold, yet a comprehensive and integrative holistic tool about management of this infrastructure is not available. Therefore, a comprehensive and integrated conceptual tool was developed and proposed by the authors of this paper that can contribute to the sustainable management of existing reservoirs. The tool presented herein is based on the results from the interdisciplinary CHARM (CHAllenges of Reservoir Management) project as well as the condensed outcome of relevant literature to aid and enhance knowledge of reservoir management. The incorporated results are based on field, laboratory and empirical social research. The project CHARM focused on five different aspects related to existing reservoirs in southern Germany (Schwarzenbachtalsperre, Franconian Lake District), namely: sedimentation of reservoirs, biostabilisation of fine sediments, toxic cyanobacteria(l) (blooms), greenhouse gas emissions from reservoirs and social contestation, respectively consent. These five research foci contributed to the topics and setup of a conceptual tool, put together by the research consortium via delphi questioning, which can be found alongside this publication to provide insights for experts and laymen. Conceptualising and analysing the management in combination with quantitative and qualitative data in one descriptive tool presents a novelty for the case studies and area of research. The distribution within the scientific community and interested public will possibly make a positive contribution to the goal of sustainable water resources management in the future.
3
Magner, T. N. "ECONOMIC BENEFITS OF THE KUTUBU RESERVOIR MANAGEMENT STRATEGY." APPEA Journal 35, no. 1 (1995): 121. http://dx.doi.org/10.1071/aj94008.
Full textAbstract:
In spite of all the of the studies and analyses conducted since the initial oil discovery in 1986, considerable uncertainty existed over the expected performance of the Kutubu reservoirs prior to initial production. Extensive use of reservoir simulation during the field development helped overcome technical challenges in the development phase. Continued modelling work has increased understanding of reservoir behaviour, identified additional development opportunities and further enhanced field economics.Since First Oil in June 1992, over 100 MMSTB of light, sweet Kutubu crude oil have been produced and exported {through October 1994). At present, the field produces approximately 120,000 STBO/D from 27 vertical wells and two horizontal wells. Reservoir pressure maintenance is provided by gravity-stable re-injection of produced gas into five wells.On the whole, the reservoirs have met or exceeded expectations to date. This is in part due to the effective planning and implementation of a strategy to manage the Kutubu reservoirs. This reservoir management strategy combines an aggressive program of reservoir surveillance, data collection, computer simulation and continuous reassessment of previous assumptions.
4
Setiawan, Ery, Syamsul Hidayat, Ida Bagus Giri Putra, Muhammad Bagus Budianto, and Salehudin. "Evaluation of sediment management for two large reservoirs in Lombok island." MATEC Web of Conferences 195 (2018): 05002. http://dx.doi.org/10.1051/matecconf/201819505002.
Full textAbstract:
Sedimentation is an important issue in reservoir rehabilitation and maintenance. This problem is worsened by seasonal water scarcity as a characteristic of arid catchments. Worldwide loss of storage capacity due to sedimentation is much higher than the increase of capacity by the construction of new reservoirs. Further, sedimentation hinders the safe operation of not only shallow reservoirs but also deep reservoirs by means of turbidity currents which sporadically transport large volumes of sediments down to the dams. This study analyses the real case of Pengga reservoir and Batujai reservoir located in Central Indonesia. Selected sediment management alternatives were analysed and evaluated based on technical, social and environmental criteria. Evaluation of sediment management alternatives was conducted by utilising the REServoir CONservation (RESCON) tool. Results showed that, first, both flushing techniques and hydrosuction are feasible whereas dredging and trucking are not. Secondly, the flushing technique outweighs the Hydrosuction Sediment Removal (HSRS) method. Thirdly, application of the HSRS method in both reservoirs shares one thing in common, i.e. it requires an appropriate combination of the number of suction pipes as well as minimum suction pipe diameters. Lastly, there are some differences in the details of implementation of the flushing technique to both reservoirs.
5
O'Dell, Mike, and Edwin Lamers. "Subsurface Uncertainty Management and Development Optimization in the Harweel Cluster, South Oman." SPE Reservoir Evaluation & Engineering 8, no. 02 (April 1, 2005): 164–68. http://dx.doi.org/10.2118/89110-pa.
Full textAbstract:
Summary In the past 5 years, there has been a string of exploration successes in discovering some 350 million m3 (2 billion bbl) of oil in the Harweel Clusterin south Oman. This oil is deep, under high pressure, and comes with a high gas/oil ratio (GOR), and the fluids contain 15% CO2 and 5% H2S. Of the nine Precambrian carbonate reservoirs, six are lithostatically pressured, and three are hydrostatic. The Harweel Cluster is more than 70 km from existing infrastructure. If gas can be reinjected, miscible displacement is expected in many of the reservoirs. The Harweel Cluster is one of Oman's major opportunities for "green field" oil development. There is a large degree of subsurface uncertainty in gross rock volume and oil/water contact (OWC), reservoir architecture, faults and fractures and reservoir compartmentalization, degree of dolomitization, permeability level and heterogeneity, fluid properties, and so on. However, little is known about the scale and relative importance of each of these uncertainties. Some uncertainties, such as compositional grading, might turn out to be more important than anticipated when evaluating development options because of nonlinearities and dependencies. Analyzing the effects of all uncertainty combinations in all reservoirs is not a realistic option. Therefore, a structured scenario-based approach has been developed to analyze and assess all potential factors influencing recovery schemes, reserves, and productivity. After evaluating the range of possible values and calculating the impact of each uncertainty, realizations were created to represent the range of possible values in each new reservoir. Field-scale equation-of-state models were used to simulate both primary depletion and gas reinjection. Development scenarios were optimized for each discrete realization. The resulting reservoir models serve as a basis for the development-concept selection and the subsequent field-development plans. Introduction The Harweel Cluster consists of nine reservoirs found in two formations in seven distinct fields. The fields were discovered between 1997 and 2002, and there is an ongoing exploration program in the area. The fields are Dafaq, Ghafeer, Harweel Deep, Rabab, Sakhiya, Sarmad, and Zalzala. The formations areA2C and A3C; these names are abbreviations for Ara Formation cycle 2 and 3Carbonates. All the reservoirs are intra salt carbonate reservoirs. Only Ghafeer and Sakhiya have reservoirs in both formations. These reservoirs are collectively called the Harweel Cluster because they form a cluster of reservoirs, and Harweel Deep was the first reservoir to be discovered. The reservoirs generally have low permeability (1 to 10 md), and they contain a wide range of fluid properties from retrograde gas condensate to black oil with moderate GOR (185 m3/m3). The highest level of the development concept is that they will be developed with a shared central facility. This cost-saving measure has been decided, but more detailed aspects of the development concept are still open for rigorous study, appraisal, and testing. Rigorous study began in2001 after discovery and reserve booking exercises for the individual reservoirs. With only the highest level of the development concept fixed, the study team had to develop an uncertainty-management scheme for evaluation of the cluster. Subsurface uncertainties were organized into 24 categories in eight major groups: gross rock volume, saturation, reservoir architecture, faults and fractures, reservoir properties, pressure/volume/temperature (PVT), relative permeability, compaction, and compressibility. Analyzing the effects of all uncertainty combinations in all reservoirs (more than 1 million permutations for each of the nine reservoirs) is not a realistic option. Therefore, a structured approach is required to analyze and assess all potential factors influencing recovery schemes, reserves, and productivity. A consistent process has been set up to (1) build reservoir models, (2) identify the critical uncertainties, (3) cover the full range of potential subsurface realizations, and (4) optimize the development. These reservoir models serve as a basis for the development concept selection and the subsequent field- and asset-development plans. The scenario-modeling process is illustrated schematically in Fig. 1.
6
Jin, Jiaxu, Hongyue Zhang, Liang Xu, Kelin Zhou, and Xiangfeng Lv. "Stability Analysis of Downstream Dam Expansion Tailings Pond." Advances in Civil Engineering 2022 (June 2, 2022): 1–13. http://dx.doi.org/10.1155/2022/1809736.
Full textAbstract:
The buildup of tailings in China has expanded dramatically with economic development and industrial demand, and the safety of tailings reservoirs has become increasingly serious. Due to the difficulty in finding a new reservoir site, the expansion approach of building a new tailings dam downstream of the original reservoir area was investigated. The stability of the tailings reservoir after expansion was calculated using the traditional dynamic and static stability solution method and taking into account the unpredictability of dam construction materials and tailings material parameters in the reservoir area. The results reveal that throughout the tailings accumulation process in the new reservoir, the tailings will build a back pressure slope at the original reservoir’s initial dam, which can considerably improve the original reservoir’s dynamic and static stability. The Monte Carlo method clearly outperforms older methods for tailing pond stability analysis. The results of this paper’s calculations will give a theoretical foundation and practical reference for the later management and maintenance of such tailings reservoirs, as well as fresh ideas and insights for comparable projects due to limited site selection.
7
Utomo, A. D., A. Wibowo, R. A. Suhaimi, D. Atminarso, and L. J. Baumgartner. "Challenges balancing fisheries resource management and river development in Indonesia." Marine and Freshwater Research 70, no. 9 (2019): 1265. http://dx.doi.org/10.1071/mf19160.
Full textAbstract:
Indonesia’s increasing human population will require more food and potable water into the future. Constructing more reservoirs has been deemed a national priority to help meet these basic needs. The number of reservoirs in Indonesia has increased gradually over time, but this may have affected fisheries resources. Of the 100 reservoirs already built, 80% are on the island of Java. The direct effects of reservoir on fisheries resources include sedimentation, reduced water flows, eutrophication and disturbance to the fish life cycle, and indirect effects may include overfishing. Reservoirs can also alter habitat, which can change fisheries productivity. Fisheries resources management, in a reservoir, has a high possibility of success if clear boundaries are set and expectations are managed. Fishermen need to participate in management and targets must be set to establish a complete ecosystem for a growing fish population. Other interventions, such as floating cage aquaculture and fish restocking, are suitable tools for management. However, at present there is no Indonesian framework to guide such management tools. With many more reservoirs planned into the future, there is a pressing need to develop a systematic and robust management system to ensure fisheries and river development can coexist.
8
Lotti, Carlo. "Management of reservoirs." International Journal of Water Resources Development 7, no. 2 (June 1991): 117–23. http://dx.doi.org/10.1080/07900629108722502.
Full text
9
Cheong, T. S., I. Ko, and J. W. Labadie. "Development of multi-objective reservoir operation rules for integrated water resources management." Journal of Hydroinformatics 12, no. 2 (November 14, 2009): 185–200. http://dx.doi.org/10.2166/hydro.2009.054.
Full textAbstract:
Real-time monitoring, databases, optimization models and visualization tools have been integrated into a Decision Support System (DSS) for optimal water resources management of two water supply reservoirs, the Daechung Reservoir and the Yongdam Reservoir of the Geum River basin, Daejeon, Korea. The KModSim as a DSS has been designed to provide information on current reservoir conditions to operational staff and to help in making decisions for short- and long-term management. For the physical calibration, the network simulations in seasonal water allocation of both reservoirs are performed for 23 years from January 1 1983 to June 30 2006. Linear and nonlinear operating rules are developed by using the actual reservoir operation data obtained from both reservoirs which are then used in KModSim by the hydrologic state method to estimate optimized target storages of both reservoirs. For validation of hydrologic states in KModSim and scenario testing for the management simulations, the optimal network simulation for the seasonal water allocations from October 1 2002 to June 30 2006 were also performed. The results' simulation by new rules fit the measured actual reservoir storage and represent well the various outflow discharge curves measured at the gauging stations of Geum River. The developed operating rules are proven to be superior in explaining actual reservoir operation as compared to the simulated target storages by existing optimization models.
10
Larraz, Beatriz, and Enrique San-Martin. "A Tale of Two Dams: The Impact of Reservoir Management on Rural Depopulation in Central Spain." Water Resources Management 35, no. 14 (October 12, 2021): 4769–87. http://dx.doi.org/10.1007/s11269-021-02938-9.
Full textAbstract:
AbstractIn rural areas, depopulation is mainly due to a lack of economic and employment opportunities. In this context, the reservoirs already built can be a source of socioeconomic development based on tourism and outdoor leisure activities. The condition for this development to materialize is that reservoir management considers these activities. In Central Spain, a process of rural depopulation has been generated in the municipalities around the reservoirs at the Upper Tagus River, as water management allows water transfers from the Tagus to the Segura River without taking into account regulations that prioritize and protect donor basin users. Through the comparison of reservoir water management and demographic data of two rural areas close to the reservoirs, this article reveals the direct relationship between reservoir management that enables recreational uses with its consequent socioeconomic development and the maintenance of the population in the territory. Consequently, reservoir water management based on the socioeconomic development of reservoir banks is necessary and a priority over transfers to another basin.
11
Campos, Jody, Iran Eduardo Lima Neto, Ticiana Marinho Studart, and José Nilson Beserra Campos. "Influence of sediment distribution on the relationships among reservoir yield, spill, and evaporation losses." Engenharia Sanitaria e Ambiental 23, no. 5 (October 2018): 849–56. http://dx.doi.org/10.1590/s1413-41522018177058.
Full textAbstract:
ABSTRACT This study shows how the sedimentation process in reservoirs affects the yield-spill-evaporation losses in reservoirs of Ceará State, Brazilian Northeast. Reservoirs are assumed to have, initially, inverted conical shape. Three forms of sedimentation were investigated: type 1, with deposition occurring parallel to the wetted perimeter; type 2, deposition distributed proportionally to the water depth; and, type 3, deposition concentrated in the reservoir bottom. These sedimentation patterns were found in many reservoirs in Ceará, with capacity ranging from about 0.5 to 100 hm3. Nevertheless, type 2 pattern was the most frequent. In this paper, five large reservoirs, over 100 hm3, were studied using Monte Carlo approach, and considering the silting over the time horizon. It was found that sediment distribution can significantly affect the yield-spill-evaporation trade-off on large reservoirs. Type 1 results have the lowest impact on reservoir yield, followed by type 2 and type 3. For Cedro reservoir, the yield would go to zero in 2115, assuming a type 3 deposition pattern. These results reinforce the need for monitoring sedimentation in large reservoirs in the Brazilian semiarid region. In addition, this study provides a relatively simple methodology to predict the impact of siltation on reservoir yield-spill-evaporation relationships, for the three most found patterns of sedimentation.
12
Carpenter, Chris. "Study Reviews Technologies, Work Flows in Heavy Oil Reservoir Management." Journal of Petroleum Technology 75, no. 04 (April 1, 2023): 79–81. http://dx.doi.org/10.2118/0423-0079-jpt.
Full textAbstract:
_ This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 209328, “Heavy Oil Reservoir Management—Latest Technologies and Work Flows,” by Hakki Aydin, SPE, Middle East Technical University; Nirup Nagabandi, Incendium Technologies; and Cenk Temizel, SPE, Saudi Aramco, et al. The paper has not been peer reviewed. _ Successful heavy oil reservoir management practices are built on analyzing and accurately predicting reservoir behavior over time. Given the complex nature of heavy oil reservoirs, including geomechanical properties and fluid-flow behavior, a need exists to develop a repeatable technique that can account for these complexities within an acceptable margin of accuracy. The objective of the complete paper is to conduct a comprehensive review of recent technologies and work flows developed for heavy oil reservoir management that can be used as a single source of reference for the industry. Introduction Because of its comprehensive nature, much of the complete paper is dedicated to a review of the characteristics of heavy oil reservoirs and their exploitation, including thermal and nonthermal methods and the literature dedicated thereto. This synopsis will concentrate on the authors’ reviews of work flows to manage these reservoirs and field applications of the methodologies they review. Work Flow for Heavy Oil Reservoir Management Reservoir management is a multidisciplinary field involving detailed analysis of geosciences such as reservoir engineering, geological engineering, and petrophysics. Evaluation of geological information and fluid properties helps to understand the distribution of heavy oil in the reservoir. Understanding the characteristics of heavy oil reservoirs is essential for selecting the appropriate enhanced oil recovery (EOR) method. Reservoir-surveillance techniques play a critical role in understanding complex systems. Statistical approaches might be required to handle extensive data sets of production history and petrophysical data. The main goal of the reservoir management team in thermal EOR methods is to optimize parameters in steam-injection projects to maximize recovery rates from heavy oil reservoirs. The important parameters influencing the success of thermal projects include injection rates and pressures, preferential steam paths, well profiles, and reservoir depth. Previous work has presented a work flow for optimizing steamfloods in Oman. The work flow involves a review of production and injection history, petrophysical properties, and geological descriptions. Steam/oil ratio was used as a key performance indicator for steam management; it is defined as barrels of steam injected for 1 bbl of additional oil production. The steam breakthrough was monitored from the wellhead flowing temperature of the producer wells. A sudden increase in wellhead temperature is associated with a steam breakthrough. The permeability map of the reservoir helps to select appropriate injectors for a steamflood. High-permeability wells might lead to fingering, causing less recovery. Vertical conformance is desired to achieve oil sweep with steam. Observation wells are the controlling stations of steamflooding efficiency. It is critical to place the observation wells in heterogeneous reservoirs. Geophysical methods also are applied for surveillance of steam-injection projects. Real-time surveillance plays a critical role in the optimization of heavy oil reservoirs. The authors describe a modeling technique called Production Universe (PU) that enables operators to estimate oil and water production in real time. PU is effective at finding the offending well in case of sudden changes in field-level production. PU provides an automated daily production and deferment report that guides analysts to identify low-efficiency wells for remedial operations.
13
Ananda, Fajriani, Nofrizal Nofrizal, Dessy Yoswaty, Lena Farida, and Rasoel Hamidy. "Integrating Environmentally Friendly Management of Water Resources toward Ecological and Socio-Economic Sustainability." International Journal of Energy Economics and Policy 13, no. 3 (May 17, 2023): 73–79. http://dx.doi.org/10.32479/ijeep.14310.
Full textAbstract:
In small-scale reservoir management, ecological factors must be a top priority, because the sustainability of the ecosystem in the reservoir is very important to maintain sustainable water availability. Efforts to maintain water quality, reduce pollution and maintain the balance of the ecosystem in the reservoir must be carried out consistently. In an effort to maintain the sustainability of small-scale reservoir management, collaboration between the government, local communities and other related parties is needed. By prioritizing ecological, social and economic aspects in a balanced way, it is hoped that the management of water resources in small-scale reservoirs can run in a sustainable manner, provide benefits to local communities, and preserve the surrounding environment. The research method used in this study is to use quantitative methods with a total sample of 137 respondents. Data collection techniques used observation and structured interview techniques to collect data on ecological, social and economic factors that affect the sustainability of small-scale reservoirs. The analysis technique used is the SEM (Structural Equation Modeling) statistical test with AMOS program. Based on the results of the research conducted, it can be concluded that the first hypothesis which states the influence of ecological factors on the sustainability of small-scale reservoirs cannot be accepted. Then the second and third hypotheses show that social and economic factors together have a significant influence on the sustainability of small-scale reservoirs. This shows that in the management of water resources in small-scale reservoirs, not only ecological factors need to be considered, but also social and economic factors.
14
Solander, Kurt C., John T. Reager, Brian F. Thomas, Cédric H. David, and James S. Famiglietti. "Simulating Human Water Regulation: The Development of an Optimal Complexity, Climate-Adaptive Reservoir Management Model for an LSM." Journal of Hydrometeorology 17, no. 3 (February 12, 2016): 725–44. http://dx.doi.org/10.1175/jhm-d-15-0056.1.
Full textAbstract:
Abstract The widespread influence of reservoirs on global rivers makes representations of reservoir outflow and storage essential components of large-scale hydrology and climate simulations across the land surface and atmosphere. Yet, reservoirs have yet to be commonly integrated into earth system models. This deficiency influences model processes such as evaporation and runoff, which are critical for accurate simulations of the coupled climate system. This study describes the development of a generalized reservoir model capable of reproducing realistic reservoir behavior for future integration in a global land surface model (LSM). Equations of increasing complexity relating reservoir inflow, outflow, and storage were tested for 14 California reservoirs that span a range of spatial and climate regimes. Temperature was employed in model equations to modulate seasonal changes in reservoir management behavior and to allow for the evolution of management seasonality as future climate varies. Optimized parameter values for the best-performing model were generalized based on the ratio of winter inflow to storage capacity so a future LSM user can generate reservoirs in any grid location by specifying the given storage capacity. Model performance statistics show good agreement between observed and simulated reservoir storage and outflow for both calibration (mean normalized RMSE = 0.48; mean coefficient of determination = 0.53) and validation reservoirs (mean normalized RMSE = 0.15; mean coefficient of determination = 0.67). The low complexity of model equations that include climate-adaptive operation features combined with robust model performance show promise for simulations of reservoir impacts on hydrology and climate within an LSM.
15
Yu, Da-jin, Zhengwei Zou, and Jin Li. "Evaluation of reservoir management modernization under the concept of coordinated development." Water Supply 20, no. 8 (August 3, 2020): 3697–706. http://dx.doi.org/10.2166/ws.2020.175.
Full textAbstract:
Abstract The modernization of reservoir management is of great significance to the coordinated development of the region. There are many factors affecting the modernization of reservoir management, and there is a certain degree of ambiguity, randomness and uncertainty among the factors. It is difficult to evaluate the modernization of reservoir management comprehensively by traditional methods. This study first studies the connotation of reservoir management modernization under the concept of coordinated development; that is, securitization, economization, scientificalization and greenization. On this basis, a modernization evaluation system and AHP-Fuzzy evaluation model for reservoir management are constructed. Then, an empirical study is conducted with six large reservoirs in Jiangxi Province of China. The results show that the modernization level of large-scale reservoir management in Jiangxi Province is generally above the middle level, and the economic management and engineering management level of some reservoirs is relatively low, resulting in a low scientific and economic level of reservoir management, which is a key factor restricting the process of reservoir management modernization.
16
Lawal, Kazeem A., Asekhame U. Yadua, Mathilda I. Ovuru, Oluchukwu M. Okoh, Stella I. Eyitayo, Saka Matemilola, and Olugbenga Olamigoke. "Rapid screening of oil-rim reservoirs for development and management." Journal of Petroleum Exploration and Production Technology 10, no. 3 (December 2, 2019): 1155–68. http://dx.doi.org/10.1007/s13202-019-00810-6.
Full textAbstract:
AbstractAs an improvement over existing screening techniques, we introduce the relative mobile energy of primary gas-cap to the aquifer (Egw) as a new parameter for characterizing the performance of oil-rim reservoirs. Egw integrates key static and dynamic reservoir properties. To account for the time value of production, the framework allows maximizing the discounted recovery factor (DRF) of oil, gas or total hydrocarbon as the objective function. Employing detailed simulations of different well-defined oil-rim models, DRFs of oil, gas and total hydrocarbons have been correlated against Egw for common development concepts and well types. These correlations have resulted in a new screening technique for both green and brown oil-rim reservoirs. In addition to presenting simple generic charts for quick evaluation of oil-rim reservoirs, the main contributions of this work include the introduction of Egw as a new performance-characterizing parameter, and the flexibility to consider the DRF of any of oil, gas or total hydrocarbon as the basis for screening an oil-rim reservoir for development planning and field management. Using the example of a brown oil-rim reservoir, the applicability and robustness of the new screening technique are demonstrated.
17
Casadei, Stefano, Silvia Di Francesco, Francesca Giannone, and Arnaldo Pierleoni. "Small reservoirs for a sustainable water resources management." Advances in Geosciences 49 (October 17, 2019): 165–74. http://dx.doi.org/10.5194/adgeo-49-165-2019.
Full textAbstract:
Abstract. Small reservoirs are widely used for storing water, especially for irrigation purposes. During the last decades, in Italy many of these reservoirs have been dismissed, becoming an untapped resource. As a matter of fact, maintenance problems connected to these structures together with their natural tendency to silt have favored the use of other water supply resources such as withdrawal from wells. The increase of drought periods and the high water volume demand for agricultural purposes suggest to evaluate a full and rational use of all water resources, leading to a rediscovery and enhancement of untapped resources. Specifically, this research focuses on small reservoirs and on their potential contribution to a sustainable water management in agriculture. Unfortunately, there are no reliable data on their number, spatial distribution and potential storage volume. The aim of this work is to define reservoir spatial distribution and evaluate potential available water volumes. The upper Tiber river basin has been selected as a case study for the methodology proposed. The work starts from the acquisition and re-elaboration of the old census of small reservoirs, evaluating, through GIS and regression techniques, the distribution over the territory and the available volumes. Then the reservoir census and the derived database were updated for the period from 2015 up to 2019 introducing combined computational procedures of remote sensing techniques and GIS, based on satellite images and water index calculation. The results of the semi automatic procedure used show good performance in lake identification, making it a promising tool for a fast and reliable water body identification and evaluation in wide areas.
18
Maju-Oyovwikowhe, E. G., and A. D. Osayande. "Hydrocarbon evaluation and distribution in Well-X and Well-Y in the Niger Delta Basin: Findings and validation through porosity comparison." Scientia Africana 22, no. 1 (June 14, 2023): 255–78. http://dx.doi.org/10.4314/sa.v22i1.22.
Full textAbstract:
The aim of this study is to integrate well logs and core data to identify reservoir characteristics and determine the reservoir's petrophysical properties in order to improve the understanding of the reservoir and provide valuable information for reservoir management. Wells X and Y of the ‘SCOJAS’ Field in the Niger Delta Basin of Nigeria were analyzed using Gamma ray logs, Resistivity logs, Sonic, Neutron and Density Logs. The obtained results were compared with core data from the wells to verify their accuracy. Porosity values for Wells X and Y fall within the range typically observed in sedimentary rocks, with Well Y having higher values. Hydrocarbons were detected in all reservoirs except reservoir zone 1b in both Well-X (12 reservoirs) and Well-Y (7 reservoirs). In Well- X, oil was identified in 5 reservoir zones while in Well-Y, oil was present in 2 reservoir zones. The remaining zones in both wells contained gas. To validate the results further, a comparison was made with the porosity of selected fields in the Niger Delta Basin and the general porosity of the Basin. Well X has a porosity range of 2.7% to 20.8%, which is generally lower than the reported porosity range Well Y has a porosity range of 19.90% to 24.38%, which falls at the upper end of the reported porosity range. Comparing previous works and data from other fields provides important validation for the findings of the study, which is crucial in the oil and gas industry for making informed decisions about exploration and production.
19
Hidayat, Fahmi, Pitojo T. Juwono, Agus Suharyanto, Alwafi Pujiraharjo, Djoko Legono, Dian Sisinggih, David Neil, Masaharu Fujita, and Tetsuya Sumi. "Assessment of Sedimentation in Wlingi and Lodoyo Reservoirs: A Secondary Disaster Following the 2014 Eruption of Mt. Kelud, Indonesia." Journal of Disaster Research 12, no. 3 (May 29, 2017): 617–30. http://dx.doi.org/10.20965/jdr.2017.p0617.
Full textAbstract:
Wlingi and Lodoyo reservoirs in the Brantas River basin, Indonesia, provide numerous benefits including reliable irrigation water supply, flood control, power generation, fisheries and recreation. The function of both reservoirs particularly in relation to flood control has declined due to severe sedimentation that has reduced their storage capacities. The sedimentation in Wlingi and Lodoyo reservoirs is mainly caused by sediment inflow from the areas most affected by ejecta from eruptions of Mt. Kelud, one of the most active volcanoes in Indonesia. The main objective of this research is to assess the sedimentation problem in Wlingi and Lodoyo reservoirs, particularly as they are affected by eruptions of Mt Kelud. We performed reservoir bathymetric surveys and field surveys after the most recent eruption of Mt. Kelud in February 2014 and compared the results with surveys undertaken before the eruption. The assessment revealed that both reservoirs were severely affected by the 2014 eruption. The effective storage capacity of Wlingi reservoir in March 2013 was 2.01 Mm3and the survey in May 2015 indicated that the effective storage of Wlingi reservoir had decreased to 1.01 Mm3. Similarly, the effective storage capacity of Lodoyo reservoir in March 2013 was 2.72 Mm3, reduced to 1.33 Mm3in May 2015. These findings underpin the analysis of the impacts of the secondary disaster due to reservoir sedimentation following the volcanic eruption and the implications for mitigating and managing the risks for sustainable use of reservoirs to control floods, supply water, generate electricity, etc. To cope with the extreme sedimentation problem in Wlingi and Lodoyo reservoirs, diverse sediment management strategies have been applied in these reservoirs and their catchments. However sediment disaster management strategies for both reservoirs, an integral part of the Mt. Kelud Volcanic Disaster Mitigation Plan, require continuous maintenance and recurrent operations, and ongoing evaluation and improvement.
20
Sukop, Ivo. "Influence of water management in lowland region of the Dyje River on water biocoenoses." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 58, no. 4 (2010): 269–76. http://dx.doi.org/10.11118/actaun201058040269.
Full textAbstract:
This work contains the results of influence of water management in lowland region of the Dyje River on water biocenoses. Research was carried out in 1977–1984, when building of the three reservoirs were started. The effect of the newly built reservoirs on the biocoenoses of the reach immediately below it was mainly beneficial. Before the reservoir near Nové Mlýny was bulit, the fish population of the Dyje River was regularly threatened by poor water quality. After completion of the three reservoirs in 1989 the pollution brought by the Dyje River was largely removed by the purification processes in the reservoirs, so that the Dyje River became cleaner than it was. The better trophic conditions and water quality downstream of the reservoirs were reflected in increased fish catches and higher fish weights. The newly built fish passes make possible migration of rare fish species from the Danube River as far as to reservoirs the Nové Mlýny.
21
Zhou, Tian, Bart Nijssen, Huilin Gao, and Dennis P. Lettenmaier. "The Contribution of Reservoirs to Global Land Surface Water Storage Variations*." Journal of Hydrometeorology 17, no. 1 (December 21, 2015): 309–25. http://dx.doi.org/10.1175/jhm-d-15-0002.1.
Full textAbstract:
Abstract Man-made reservoirs play a key role in the terrestrial water system. They alter water fluxes at the land surface and impact surface water storage through water management regulations for diverse purposes such as irrigation, municipal water supply, hydropower generation, and flood control. Although most developed countries have established sophisticated observing systems for many variables in the land surface water cycle, long-term and consistent records of reservoir storage are much more limited and not always shared. Furthermore, most land surface hydrological models do not represent the effects of water management activities. Here, the contribution of reservoirs to seasonal water storage variations is investigated using a large-scale water management model to simulate the effects of reservoir management at basin and continental scales. The model was run from 1948 to 2010 at a spatial resolution of 0.25° latitude–longitude. A total of 166 of the largest reservoirs in the world with a total capacity of about 3900 km3 (nearly 60% of the globally integrated reservoir capacity) were simulated. The global reservoir storage time series reflects the massive expansion of global reservoir capacity; over 30 000 reservoirs have been constructed during the past half century, with a mean absolute interannual storage variation of 89 km3. The results indicate that the average reservoir-induced seasonal storage variation is nearly 700 km3 or about 10% of the global reservoir storage. For some river basins, such as the Yellow River, seasonal reservoir storage variations can be as large as 72% of combined snow water equivalent and soil moisture storage.
22
Savira Agatha Putri, Marsha, Jr-Lin Lin, Lin-Han Chiang Hsieh, Yasmin Zafirah, Gerry Andhikaputra, and Yu-Chun Wang. "Influencing Factors Analysis of Taiwan Eutrophicated Reservoirs." Water 12, no. 5 (May 7, 2020): 1325. http://dx.doi.org/10.3390/w12051325.
Full textAbstract:
Treatment cost and quality of domestic water are highly correlated with raw water quality in reservoirs. This study aims to identify the key factors that influence the trophic state levels and correlations among Carlson trophic state index (CTSI) levels, water quality parameters and weather factors in four major reservoirs in Taiwan from 2000 to 2017. Weather (e.g., air temperature, relative humidity, total precipitation, sunlight percentage and cloud cover) and water quality parameters (e.g., pH, chemical oxygen demand, suspended solids (SS), ammonia, total hardness, nitrate, nitrite and water temperature) were included in the principal component analysis and absolute principal component score models to evaluate the main governing factors of the trophic state levels (e.g., CTSI). SS were washed out by precipitation, thereby influencing the reservoir transparency tremendously and contributing over 50% to the CTSI level in eutrophicated reservoirs (e.g., the Shihmen and Chengchinghu Reservoirs). CTSI levels in the mesotrophic reservoir (e.g., Liyutan Reservoir) had strong correlation with chlorophyll-a and total phosphorus. Results show that rainfall/weather factors were the key driving factors that affected the CTSI levels in Taiwan eutrophicated reservoirs, indicating the need to consider basin management and the impacts of extreme precipitation in reservoir management and future policymaking.
23
De Vincenzo, Annamaria, Carmine Covelli, Antonio Molino, Marilena Pannone, Margherita Ciccaglione, and Bruno Molino. "Long-Term Management Policies of Reservoirs: Possible Re-Use of Dredged Sediments for Coastal Nourishment." Water 11, no. 1 (December 21, 2018): 15. http://dx.doi.org/10.3390/w11010015.
Full textAbstract:
This paper proposes a methodological approach to the re-use of reservoir sediments for coastal nourishment. The proposed approach represents a point of convergence between water and sediment management, coastal protection from erosion and the re-use of sediments dredged from reservoirs. In particular, this study indicates a general protocol of actions and a reference legislative scenario for the use of sediment from reservoirs for beach nourishment as an alternative to sediment from sea caves or land caves. Quantitative characterization of reservoir sediments and their qualitative characterization are the fundamental steps to define the compatibility between reservoir sediment and beach sand. The study was applied to a real case of Southern Italy known as the Guardialfiera Reservoir.
24
Yu, Yu, Yu Bai, Yingying Ni, Yi Luo, and Shafique Junejo. "Water Quality Variation Law and Prediction Method of a Small Reservoir in China." Sustainability 14, no. 21 (October 24, 2022): 13755. http://dx.doi.org/10.3390/su142113755.
Full textAbstract:
Compared with the attention of large reservoirs, the water quality of small reservoirs also needs attention. In recent years, the problem of reservoir water quality has become increasingly serious. How to predict reservoir water quality may be an urgent problem to be solved. Taking the Yangmeiling reservoir as an example, this paper collects the hydrological and water quality data of the Yangmeiling reservoir in the last ten years, analyzes the relationship between hydrological and water quality data, and uses a machine learning method to simulate the relationship between water quality and hydrological data. The results show that the water quality of small reservoirs can be simply linked with hydrological data and can be predicted through hydrological data, and has high simulation accuracy. This method can be popularized in the simulation and prediction of the water quality of small reservoirs; it does not provide a theoretical basis for the water quality management of small reservoirs.
25
Gonsalves Bertho, Gabriel, Antônio Lúcio Mello Martins, Leandro Contri Campanelli, Maria Conceição Lopes, and Mariana Bárbara Lopes Simedo. "WATER QUALITY ASSESSMENT IN RELATION TO THE SURROUNDING SOIL MANAGEMENT OF TWO RESERVOIRS IN PINDORAMA/SP - A PRELIMINARY STUDY." Revista Geociências - UNG-Ser 21, no. 1 (June 7, 2023): 64. http://dx.doi.org/10.33947/1981-741x-v21n1-5012.
Full textAbstract:
Water quality monitoring of rural reservoirs is essential to detect the effects of diffuse pollution sources such as agricultural activities on the water quality. This paper describes a preliminary study that uses a multiparameter probe and total phosphorus analysis to characterize and compare two reservoirs in Pindorama/SP surrounded by active plantations, noting that one of them has its surface filled with floating macrophytes. The reservoirs areas were characterized, and analysis of physicochemical parameters were made in strategic sampling points. Elevated total phosphorus concentrations were detected in both reservoirs, being hypothesized that the source of this nutrient is the runoff of agricultural byproducts from the surroundings. The reservoir filled with macrophytes had greater phosphorus concentration and was characterized as in a eutrophic state, thus explaining the overpopulation of macrophytes as they can be a consequence of the eutrophication process. Lower levels of phosphorus in the other reservoir may be explained by its morphological characteristics and the presence of a more consolidated riparian forest. To reduce the environmental impacts of the contamination in both reservoirs, it was proposed that practices for adequate soil management in the surroundings, for increasing the reservoirs water circulation, and for sustainably retaining the contamination sources, could be implemented to control the effects of eutrophication.
26
Baljyan, Pargev, Arestak Sarukhanyan, and Eleonora Avanesyan. "Study of sediment deposition processes and assessment of the change in the W-H characteristics of the madaghis reservoir." EUREKA: Physics and Engineering, no. 1 (January 19, 2023): 3–12. http://dx.doi.org/10.21303/2461-4262.2023.002757.
Full textAbstract:
The accumulation of sediments in reservoir is always a problem. Over time, these accumulations occupy the volume meant for water management, dramatically reducing the reservoir's effectiveness. The environment of the river basin below the reservoir undergoes significant changes. In this regard, assessing changes in volumetric W-H characteristics, particularly in reservoirs built on high turbidity rivers, is critical. The Mataghis Reservoir on Tartar River was chosen as the object of study. The quantity of accumulated sediments was established by original measurements and was calculated in three hydrologic ways at distinct stages of operation. The actual graphs showing the reservoir's W-H volumetric characteristics were made two decades after commissioning and are still in use. According to the findings, over 70 per cent of the reservoir volume has been filled with sediments over the course of the reservoir's thirty-year operation. A theoretical model of the sediment buildup process in basins has been created. Separate parameters have been created for the deposition of bottom sediments entering the reservoir and suspended particles in the flow. Based on them, the patterns of distribution of accumulated sediments according to the length and height of the reservoir were drawn out. The vertical pulsation velocity and the results of studies for determining the minimum rate of soil particle flow were used. To solve sedimentation problems in operating and newly constructed reservoirs, a methodology for evaluating changes in the amount of collected water and changes in the volume of water control, as well as a theoretical method for projecting their future behavior, can be applied
27
Silva, Suelen Cristina Alves da, Armando Carlos Cervi, Cleusa Bona, and André Andrian Padial. "Aquatic macrophyte community varies in urban reservoirs with different degrees of eutrophication." Acta Limnologica Brasiliensia 26, no. 2 (June 2014): 129–42. http://dx.doi.org/10.1590/s2179-975x2014000200004.
Full textAbstract:
AIM: Investigate spatial and temporal variation in the aquatic macrophyte community in four urban reservoirs located in Curitiba metropolitan region, Brazil. We tested the hypothesis that aquatic macrophyte community differ among reservoirs with different degrees of eutrophication. METHODS: The reservoirs selected ranged from oligotrophic/mesotrophic to eutrophic. Sampling occurred in October 2011, January 2012 and June 2012. Twelve aquatic macrophytes stands were sampled at each reservoir. Species were identified and the relative abundance of aquatic macrophytes was estimated. Differences among reservoirs and over sampling periods were analyzed: i) through two‑way ANOVAs considering the stand extent (m) and the stand biodiversity - species richness, evenness, Shannon-Wiener index and beta diversity (species variation along the aquatic macrophyte stand); and ii) through PERMANOVA considering species composition. Indicator species that were characteristic for each reservoir were also identified. RESULTS: The aquatic macrophyte stand extent varied among reservoirs and over sampling periods. Species richness showed only temporal variation. On the other hand, evenness and Shannon-Wiener index varied only among reservoirs. The beta diversity of macrophyte stands did not vary among reservoirs or over time, meaning that species variability among aquatic macrophyte stands was independent of the stand extent and reservoir eutrophication. Community composition depended on the reservoir and sampling period. CONCLUSIONS: Our results support our initial expectation that reservoirs of different degrees of eutrophication have different aquatic macrophyte communities. As a consequence, each reservoir had particular indicator species. Therefore, monitoring and management efforts must be offered for each reservoir individually.
28
Vieira, J. M. P., J. L. S. Pinho, N. Dias, D. Schwanenberg, and H. F. P. van den Boogaard. "Parameter estimation for eutrophication models in reservoirs." Water Science and Technology 68, no. 2 (July 1, 2013): 319–27. http://dx.doi.org/10.2166/wst.2013.248.
Full textAbstract:
Excessive eutrophication is a major water quality issue in lakes and reservoirs worldwide. This complex biological process can lead to serious water quality problems. Although it can be adequately addressed by applying sophisticated mathematical models, the application of these tools in a reservoir management context requires significant amounts of data and large computation times. This work presents a simple primary production model and a calibration procedure that can efficiently be used in operational reservoir management frameworks. It considers four state variables: herbivorous zooplankton, algae (measured as chlorophyll-a pigment), phosphorous and nitrogen. The model was applied to a set of Portuguese reservoirs. We apply the model to 23 Portuguese reservoirs in two different calibration settings. This research work presents the results of the estimation of model parameters.
29
Garg, Jaya, and H. K. Garg. "Water Quality Management: Strategies for Conservation of Bhopal Waters." Environment Conservation Journal 2, no. 2&3 (December 15, 2001): 101–4. http://dx.doi.org/10.36953/ecj.2001.022306.
Full textAbstract:
The city of Bhopal is crowned with lakes and reservoirs, which are major sources of potable water, recreational activities and aquaculture. These reservoirs are under great environmental stress due to agricultural run offs, human encroachments, siltation and growth of aquatic needs. In order to maintain Upper lake as a healthy water- resource for drinking purposes, lower lake as a recreational ground for boating, water games, tourism and surface transport and Shahpura reservoir as a pisciculture station, an attempt has been made to formulate certain measures, that can cure the already spoilt lakes and check the water sheds from getting eutrophicated.
30
Viterbo, Francesca, Laura Read, Kenneth Nowak, Andrew W. Wood, David Gochis, Robert Cifelli, and Mimi Hughes. "General Assessment of the Operational Utility of National Water Model Reservoir Inflows for the Bureau of Reclamation Facilities." Water 12, no. 10 (October 16, 2020): 2897. http://dx.doi.org/10.3390/w12102897.
Full textAbstract:
This work investigates the utility of the National Oceanic and Atmospheric Administration’s National Water Model (NWM) for water management operations by assessing the total inflow into a select number of reservoirs across the Central and Western U.S. Total inflow is generally an unmeasured quantity, though critically important for anticipating both floods and shortages in supply over a short-term (hourly) to sub-seasonal (monthly) time horizon. The NWM offers such information at over 5000 reservoirs across the U.S., however, its skill at representing inflow processes is largely unknown. The goal of this work is to understand the drivers for both well performing and poor performing NWM inflows such that managers can get a sense of the capability of NWM to capture natural hydrologic processes and in some cases, the effects of upstream management. We analyzed the inflows for a subset of Bureau of Reclamation (BoR) reservoirs within the NWM over the long-term simulations (retrospectively, seven years) and for short, medium and long-range operational forecast cycles over a one-year period. We utilize ancillary reservoir characteristics (e.g., physical and operational) to explain variation in inflow performance across the selected reservoirs. In general, we find that NWM inflows in snow-driven basins outperform those in rain-driven, and that assimilated basin area, upstream management, and calibrated basin area all influence the NWM’s ability to reproduce daily reservoir inflows. The final outcome of this work proposes a framework for how the NWM reservoir inflows can be useful for reservoir management, linking reservoir purposes with the forecast cycles and retrospective simulations.
31
Heidari, Hadi, Baptiste Francois, and Casey Brown. "Possibility Assessment of Reservoir Expansion in the Conterminous United States." Hydrology 9, no. 10 (October 7, 2022): 175. http://dx.doi.org/10.3390/hydrology9100175.
Full textAbstract:
Reservoir expansion is commonly considered an adaptation strategy to attenuate water shortage conditions. In many locations in the United States, there are ongoing discussions about the effectiveness and feasibility of reservoir expansion with regard to the growing drought conditions and a consequent significant decrease in surface water. This study investigates if the expansion of the existing Unites States reservoirs should be still considered an effective and adequate management solution to cope with water shortages. To this end, we have defined three reservoir expansion metrics to assess the efficiency, feasibility, and usefulness of increasing the storage capacity of 304 reservoirs across the conterminous United States (CONUS). The efficiency metric is defined as the ratio of reservoir average storage to maximum active storage. The feasibility metric is defined as the ratio of reservoir average annual inflow to maximum active storage and the usefulness metric is described as the ratio of the reservoir average annual excess inflow (average annual inflow–maximum active storage) to the average intensity of water shortages. The finding indicates that most reservoirs in Colorado and Utah currently have high or very high efficiency metrics meaning that these reservoirs are, on average, more than half full while most reservoirs in Texas have low or medium efficiency metrics indicating that these reservoirs are, on average, less than half full. Additionally, the feasibility metrics indicate that reservoir expansion in most western and southern states may not be fruitful because the average annual inflow to reservoirs is less than their maximum active storage over the historical period. Nevertheless, the usefulness metrics show that reservoir expansion can be a useful adaptation strategy to mitigate or attenuate water shortages for some reservoirs in California and Colorado while it cannot considerably decrease the intensity of water shortages in Texas. Findings from this study highlight the utility of the assessment of reservoir expansion at a regional scale considering both available freshwater as an input to reservoirs and the potential water shortage conditions as the main trigger.
32
A.Z, Abdul Razad, Abbas N.A, Mohd Sidek. L, Alexander J.L, and Jung K. "Sediment Management Strategies for Hydropower Reservoirs in Active Agricultural Area." International Journal of Engineering & Technology 7, no. 4.35 (November 30, 2018): 228. http://dx.doi.org/10.14419/ijet.v7i4.35.22737.
Full textAbstract:
Ringlet, Jor and Mahang reservoirs are part of Cameron Highlands – Batang Padang Hydroelectric Scheme. Conversion of forest to agricultural and urban area within the catchment has caused Ringlet Reservoir to suffer severe sedimentation problem and waste dumping. This has caused operational difficulties to the hydropower operator. Based on estimation, sediment inflow into Ringlet Reservoir has increased multiple folds from 25,000 m3/year in 1960s up to between 120,000 m3/year to 200,000 m3/year in 2010. This reduces the total storage capacity of Ringlet Reservoir to almost 50% of its original design value, and subsequently affects Jor and Mahang Reservoirs. Bertam Intake is often choked by the sediment built up within the area, thus limiting the running hours of the plant to generate electricity. Without sediment management strategies, the incoming sediment load into Ringlet Reservoir would increase tremendously and can cause the hydropower scheme to cease operation faster that its design life expectancy. Various mitigation strategies have been implemented such as dredging, construction of check dams and settling basins and flushing from the bottom outlet, resulting to an increase in storage. Despite these efforts which focus within the reservoir, the best solution is by control the sediment and waste at source, through the concept of an integrated catchment management. This requires concerted effort from the local authorities and public to ensure successful implementation. This paper outlines the methods, analyses and results of various mitigation strategies.
33
Chen, Wenjun, Bin He, Junting Ma, and Chuanhai Wang. "A WebGIS-based flood control management system for small reservoirs: a case study in the lower reaches of the Yangtze River." Journal of Hydroinformatics 19, no. 2 (November 29, 2016): 299–314. http://dx.doi.org/10.2166/hydro.2016.049.
Full textAbstract:
Small reservoirs are important to flood control and water resource utilization in local areas. This study proposes a WebGIS-based flood control management system to support the flood discharge of small reservoirs during intensive rainfall in the flood season. The agile software development method and a loosely coupled structure are used to combine multidisciplinary knowledge from different experts. A flood level forecasting model for reservoirs in humid regions is established based on rainfall and water level measurements. It aims to provide concise information for reservoir managers to choose an appropriate discharging scheme, so that the capacity is maintained in a safe range on the next day. Using the Hengshan Reservoir in the lower reaches of the Yangtze River as an example, the model verification reveals that it is acceptable for rainfall events whose daily amount is near or above 100 mm (the heavy rainstorm level in China), and the system is verified by a trial operation during the typhoon season. While most existing flood control systems focus on river basins and large reservoirs, this study considers the data availability and practical flood discharging scenario of small reservoirs, and provides a useful tool for flood control management.
34
Song, Yunlong. "Study on Water Quality and Trophic Status of Subtropical Cascade Reservoirs in Dongjiang River Basin in Dry Season." E3S Web of Conferences 406 (2023): 03022. http://dx.doi.org/10.1051/e3sconf/202340603022.
Full textAbstract:
The Dongjiang River Basin is an important water source for Guangdong Province, providing water for living, production and ecology for more than 40 million people. The three large reservoirs, Xinfengjiang Reservoir, Fengshuba Reservoir and Baipenzhu Reservoir, are the three largest reservoirs in the Dongjiang River Basin. The quality of the water environment in the three reservoirs plays an important role in ensuring the safety of drinking water and promoting the overall protection, systematic restoration and comprehensive management of the water ecosystem. 11 indicators, including water temperature, transparency, pH, DO, turbidity, conductivity, ammonia nitrogen, TN, TP, CODMn and chlorophyll a, were tested in October 2022 to study the water quality characteristics and trophic status of the three cascade reservoirs. The results of the single-factor evaluation of water quality showed that all three reservoirs reached the surface water class II level. TN is the primary pollutant in Fengshuba and Baipenzhu reservoirs. The concentration of Chla in Baekpongju Reservoir was 3.4 μg/L, with a mild risk of algal bloom. TLI (Σ) of the three cascade reservoirs were about 16.41~32.14.The results of the integrated nutrient status evaluation showed that Xinfengjiang Reservoir was in a depleted nutrient status, while Mapeshuba and Bailuanzhu Reservoirs were in a medium nutrient status. Factor analysis showed that 11 water quality factors can be classified into four categories. F1 represents the organic pollution. F2represents the phytoplankton biomass. F3 represents the concentration of nitrogen. F4 represents the suspended solids in water.
35
Shen, Youjiang, Karina Nielsen, Menaka Revel, Dedi Liu, and Dai Yamazaki. "Res-CN (Reservoir dataset in China): hydrometeorological time series and landscape attributes across 3254 Chinese reservoirs." Earth System Science Data 15, no. 7 (July 5, 2023): 2781–808. http://dx.doi.org/10.5194/essd-15-2781-2023.
Full textAbstract:
Abstract. Dams and reservoirs are human-made infrastructures that have attracted increasing attention because of their societal and environmental significance. Towards better management and conservation of reservoirs, a dataset of reservoir-catchment characteristics is needed, considering that the amount of water and material flowing into and out of reservoirs depends on their locations on the river network and the properties of the upstream catchment. To date, no dataset exists for reservoir-catchment characteristics. The aim of this study is to develop the first database featuring reservoir-catchment characteristics for 3254 reservoirs with storage capacity totaling 682 595 km3 (73.2 % of reservoir water storage capacity in China) to support the management and conservation of reservoirs in the context of catchment level. To ensure a more representative and accurate mapping of local variables of large reservoirs, reservoir catchments are delineated into full catchments (their full upstream contributing areas) and intermediate catchments (subtracting the area contributed by upstream reservoirs from the full upstream part of the current reservoir). Using both full catchments and intermediate catchments, characteristics of reservoir catchments were extracted, with a total of 512 attributes in six categories (i.e., reservoir and catchment body characteristics, topography, climate, soil and geology, land cover and use, and anthropogenic activity characteristics). Besides these static attributes, time series of 15 meteorological variables of catchments were extracted to support hydrological simulations for a better understanding of drivers of reservoir environment change. Moreover, we provide a comprehensive and extensive reservoir dataset on water level (data available for 20 % of 3254 reservoirs), water surface area (99 %), storage anomaly (92 %), and evaporation (98 %) from multisource satellites such as radar and laser altimeters and images from Landsat and Sentinel satellites. These products significantly enhance spatial and temporal coverage in comparison to existing similar products (e.g., 67 % increase in spatial resolution of water level and 225 % increase in storage anomaly) and contribute to our understanding of reservoir properties and functions within the Earth system by incorporated national or global hydrological modeling. In situ data of 138 reservoirs are employed in this study as a valuable reference for evaluation, thus enhancing our confidence in the data quality and enhancing our understanding of the accuracy of current satellite datasets. Along with its extensive attributes, the Reservoir dataset in China (Res-CN) can support a broad range of applications such as water resources, hydrologic/hydrodynamic modeling, and energy planning. Res-CN is on Zenodo through https://doi.org/10.5281/zenodo.7664489 (Shen et al., 2022c).
36
Akhavan, Amir Naser, Seyed Emad Hosseini, and Mohsen Bahrami. "Quick Review." Tehnički glasnik 17, no. 2 (May 12, 2023): 172–78. http://dx.doi.org/10.31803/tg-20220604112718.
Full textAbstract:
The notable increase in petroleum demand, together with a decline in discovery rates, has highlighted the desire for efficient production of existing oil wells worldwide. Mainly, the productivity of the existing large oil fields makes us consider the principles of managing reservoirs to make the most of extraction. At the same time, many different uncertainties in the course of the developing oil field, including geological, operational, and economic uncertainties, have a detrimental impact on the reservoir's effective production, which is why dealing with uncertainty is crucial for maximizing output. There is a broad variety of studies on managing oil reservoirs under uncertainty information in the literature. In this study a short review of earlier works has been done on optimization strategies and management of uncertainty in reservoir production.
37
Abolvaset, Naeemeh, Simin shahradfar, and Atosa Mihandoost. "Optimization of multipurpose reservoir system operation (Case study: Sefidrud and Shahryar reservoir dams)." E3S Web of Conferences 346 (2022): 03027. http://dx.doi.org/10.1051/e3sconf/202234603027.
Full textAbstract:
Nowadays, effective water management becomes more vital all over the worlds. Due to the effect of climate change and population growth, reservoirs play a more important role in water resources management. Reservoirs can be used for multiple purposes such as irrigation, industrial water supply, hydropower generation, flood protection, water quality management, recreation and so on. In this paper, an optimized model have been considered and solved based on the goal programming method for the optimal operation of a multi-objective two reservoir systems in Sefidrud watershed. Release for irrigation demand and environment, flood controlling and recreation are represented as objectives. Then, to consider uncertainties and also for achieving the general method for reservoirs operation, because of the considerable advantages of linguistic rules in better inferring and interpretation of systems, an adaptive neuro based fuzzy inference system (ANFIS) approach is used to construct operation rules for these multipurpose reservoirs. The results of the ANFIS models show that they can be applied successfully to provide high accuracy for the management of the reservoirs system.
38
Wang, Hsiao-Wen, Mathias Kondolf, Desiree Tullos, and Wei-Cheng Kuo. "Sediment Management in Taiwan’s Reservoirs and Barriers to Implementation." Water 10, no. 8 (August 4, 2018): 1034. http://dx.doi.org/10.3390/w10081034.
Full textAbstract:
Reservoirs play a critically important role in supplying water for human uses. However, sedimentation limits storage capabilities and increases risk for aging infrastructure. The objectives of this paper are to synthesize both general sediment management strategies and past sediment management efforts in Taiwan in order to identify the barriers to more effective sediment management in reservoirs globally. A review of the broader literature and six Taiwan case studies was conducted to examine the characteristics, limitations, costs, and effectiveness of different sediment management strategies. Results highlight how social barriers play an important role in limiting reservoir sustainability, particularly the crisis-response approach to addressing sedimentation and the low priority for sediment management relative to competing objectives, such as tourism. Technical barriers are driven primarily by the engineering and costs of retrofitting existing dams and site conditions that may inhibit particular practices at any given site. Results also highlight tradeoffs in the effectiveness, costs, and time efficiency of various sediment management strategies in restoring storage capacity. The high sediment loads and rapid filling of reservoirs in Taiwan provide early insight into the management issues that are emerging worldwide, and these results emphasize the need for proactive engineering and management of sediment in reservoirs globally.
39
Hwang, Soonho, Sang-Min Jun, Jung-Hun Song, Kyeung Kim, Hakkwan Kim, and Moon-Seong Kang. "Application of the SWAT-EFDC Linkage Model for Assessing Water Quality Management in an Estuarine Reservoir Separated by Levees." Applied Sciences 11, no. 9 (April 26, 2021): 3911. http://dx.doi.org/10.3390/app11093911.
Full textAbstract:
Estuarine reservoirs are available for use in various water resource systems. In agriculture, supplying irrigation water that meets water quality standards is essential for food safety. This study focused on the Ganwol estuarine reservoir in the midwestern region of South Korea, which suffers from water quality deterioration problems. To explore the water quality improvement in an estuarine reservoir, it is essential to understand the characteristics of water quality changes in the reservoir following water pollution control management. Therefore, the purpose of this study is to evaluate the effects of water quality management on the estuarine reservoir, which is separated by levees, using the soil and water assessment tool (SWAT)-environmental fluid dynamics code (EFDC) linkage model. In this study, soil remediation by dredging the reservoir’s bottom soil and effluent control from public sewage treatment works were considered as the water management plans. The results of this study indicate that reducing the internal load of the reservoir increases internal resilience and reducing the external inflow load decreases the impact on the system. Hence, comprehensive measures are effective in improving water quality.
40
Fashagba, Imoleayo, Pius Enikanselu, Ademola Lanisa, and Olabode Matthew. "Seismic reflection pattern and attribute analysis as a tool for defining reservoir architecture in ‘SABALO’ field, deepwater Niger Delta." Journal of Petroleum Exploration and Production Technology 10, no. 3 (November 27, 2019): 991–1008. http://dx.doi.org/10.1007/s13202-019-00807-1.
Full textAbstract:
AbstractAn accurate definition of environment of sediment deposition is a sine qua non for characterizing and providing measures for enhancing hydrocarbon reservoirs. Consequently, this study is aimed at determining the sub-environment of deposition and architecture of two reservoirs: S1000 and S2000 reservoirs, in ‘SABALO’ field, deep offshore Niger Delta. In addition, the study is imperative in order to assess reservoir properties such as: geometry, connectivity and continuity, which are important for exploration and reservoir management. In this study, we integrated well logs from six (6) wells and 3D-seismic data (near and far angle stack) for seismic stratigraphic studies. Four major seismic sequences with their corresponding facies units were recognized by analysis of reflection terminations, seismic parameters and external geometry. The reservoirs of interest are within the seismic sequence one containing facies units: SF1A and SF1B. Both reservoirs were delineated to be structurally and stratigraphically controlled. This implies a combinational trapping system at the reservoir level. Also, hydrocarbons in the reservoir were confirmed to be down to reservoir base. Integrated study of the seismic and well logs shows that the two identified reservoirs, S1000 and S2000, were defined to be weakly confined channel complex with an area of 50 km2 and 78 km2, respectively. Their connectivity was defined to be loosely amalgamated and highly amalgamated, respectively. The results of this paper are essential to develop the reservoirs by utilizing the information of their geometry, connectivity and continuity.
41
Chen, Chi-Feng, Yi-Ru Wu, and Jen-Yang Lin. "Applying a Watershed and Reservoir Model in an Off-Site Reservoir to Establish an Effective Watershed Management Plan." Processes 7, no. 8 (August 1, 2019): 484. http://dx.doi.org/10.3390/pr7080484.
Full textAbstract:
Off-site reservoirs use water from other watersheds to supplement their water quantity. Water quality is usually better in off-site reservoirs than in onsite reservoirs, because in comparison to onsite reservoirs, watershed areas are smaller and fewer pollutants are collected; moreover, cleaner water is introduced. However, in Taiwan, the water quality of some off-site reservoirs can gradually worsen, and this factor needs to be addressed. In this study, the Liyutan reservoir in central Taiwan was used as an example to demonstrate the process of evaluating pollution in an off-site reservoir. Pollution loads from point sources (PSs) and nonpoint sources (NPSs) were carefully estimated. Domestic sewage and tourist wastewater were considered the major PS loads in this study. The NPS load evaluation was dependent on the results of a verified watershed model, the stormwater management model (SWMM). The observed data in 2015 and 2016 and supplementary total phosphorous (TP) samplings in upstream rivers in 2018 were used to validate the model results. Model calibration and verification were implemented during dry weather and wet weather to ensure the accuracy of the PS and NPS simulations. The results of this study showed that the average total phosphorous (TP) load generated from within the watershed was 9013 kg/y, and that the TP load from outside the watershed was 4545 kg/y. The percentages of TP loads from NPSs and PSs in the watershed were 83% and 17%, respectively. Finally, we used a verified Vollenweider model to convert the TP loads to the TP concentration in the reservoir. The pollution reduction measures and the associated predicted water quality values were assessed using the verified models.
42
Kim, Donghyun, Jongsung Kim, Wonjoon Wang, Haneul Lee, and Hung Soo Kim. "On Hypsometric Curve and Morphological Analysis of the Collapsed Irrigation Reservoirs." Water 14, no. 6 (March 14, 2022): 907. http://dx.doi.org/10.3390/w14060907.
Full textAbstract:
The impact of irrigation reservoirs requires investigation through hydrological analysis to identify the flood control functions of these reservoirs. However, there is insufficient information concerning important geographical, morphological, and topographic characteristics, such as the reservoir cross-section. Therefore, this study aimed to identify the morphological and topographic characteristics of reservoirs using geographical information instead of measurement data. Ten reservoirs, including the Ga-Gog reservoir located in Miryang City, South Korea, were selected. The topographic information of the reservoirs was obtained using topographic maps and GIS techniques. Based on this information, the volume (V)-area (A)-depth (H) relationship and the hypsometric curve (HC) according to the relative area (a/A) and relative height (h/H) were created. A comparison of the reservoir volume, estimated using topographic information, with the measured volume revealed an error rate between 0.23% and 14.27%. In addition, two collapsed reservoirs located near Miryang City were investigated by creating V-A-H relationships and HCs using topographic information. The morphological characteristics of the reservoirs were identified by analyzing the (1) morphology index, (2) full water storage area-levee height relationship, and (3) full water storage area relationship. The analysis results showed that the collapsed reservoirs had high water depth and a large area relative to other reservoirs. Similar types of reservoirs were grouped by conducting a cluster analysis using basic properties such as the basin area, storage, and levee height. The cluster analysis results, based on HC analysis, grouped the reservoirs into three shapes: convex upward (youthful stage), relatively flat (mature stage), and convex downward (old stage). The HCs of the collapsed reservoirs exhibited a convex downward shape, indicating that they were subjected to considerable erosion due to aging. Moreover, this considerable erosion caused a large quantity of sediment to accumulate in the reservoirs, resulting in an insufficient allowable storage capacity of the reservoir because the flood control capacity was reduced, which may have led to their collapse during heavy rainfalls. Therefore, the identification of potential causes of reservoir collapse through the morphological characteristics and HCs of reservoirs are expected to support the operation and management of reservoirs to reduce flood damage.
43
Jin, Mei-Yan, Jong-Jun Lee, Hye-Ji Oh, Gui-Sook Nam, Kwang-Seuk Jeong, Jong-Min Oh, and Kwang-Hyeon Chang. "The Response of Catchment Ecosystems in Eutrophic Agricultural Reservoirs to Water Quality Management Using DOM Fluorescence." Sustainability 11, no. 24 (December 16, 2019): 7207. http://dx.doi.org/10.3390/su11247207.
Full textAbstract:
Three-dimensional excitation emission matrix (EEM) fluorescence spectroscopy was used to investigate the characteristics of dissolved organic matter (DOM) in five typical eutrophic agricultural reservoirs. Based on catchment ecosystem, the five reservoirs were divided into three pollution sources of livestock, living, and farmland sources. The quantities and qualities of DOM in the reservoirs were analyzed. Our results showed that DOM characteristics were different in eutrophic reservoirs based on source. More protein-like components were observed in the reservoirs with the living sources, while more humic-like components were seen in the reservoir with farmland sources. Additionally, correlation analysis showed different sources for protein-like and humic-like components. Protein-like components originated mainly from phytoplankton (endogenous sources), and humic-like components were from terrestrial sources. Furthermore, the high values of specific fluorescence parameters were consistent with a dominant role of endogenous DOM in eutrophic water bodies, with FI values (fluorescence index) of approximately 1.9, and β:α values (freshness index) greater than 0.7. This result indicated that mixed features dominated endogenous sources in the reservoirs, regardless of terrestrial pollution sources. By comparing our fluorescence characteristics and historical references, we confirmed that catchment ecosystems related to human activities are important factors in determination of the characteristics of DOM in aquatic environments. However, complex and extensive eutrophication requires endogenous control of water bodies, which will play a central role in improving water environments and sustainable use of reservoirs. Therefore, this study provides an effective basis for water quality assessment of eutrophic agricultural reservoirs.
44
Teguh, Novi Andriany, and Nastasia Festy Marginia. "ANALYSIS OF SEDIMENTATION TRENDS IN EFFORTS FOR SUSTAINABILITY AT WONOREJO RESERVOIR." Chimica Didactica Acta 9, no. 2 (March 4, 2022): 52–56. http://dx.doi.org/10.24815/jcd.v9i2.25097.
Full textAbstract:
Sedimentation is a natural problem that always occurs in water structures, especially dams and reservoirs. Wonorejo Reservoir as a multipurpose reservoir also experienced this. Sedimentation can affect the performance of reservoirs and dams. With the accumulation of sediment, the volume of the reservoir will change from time to time, so it is necessary to estimate the volume of sediment during the useful life of the reservoir and dam, so that they can function optimally. In addition, efforts are also needed to deal with the sedimentation. This study was conducted to estimate the volume of sediment that can occur during the useful life of reservoirs and dams, which is 50 years. Using limited data from previous studies, the study was carried out using the literature study method from other studies that have been carried out in other reservoirs and dams in Indonesia. Based on the estimation results, it is estimated that the volume of sediment in the Wonorejo Reservoir at the end of its age will reach 17.6% of the reservoir capacity volume. So it can be concluded that the reservoir can still work optimally. However, these results are not accurate enough due to the limited data available so that proper sedimentation management efforts are still needed. These countermeasures can be adopted from what has been suggested in other studies for reservoirs and dams in Indonesia.
45
Isendahl, Christian. "THE WEIGHT OF WATER: A NEW LOOK AT PRE-HISPANIC PUUC MAYA WATER RESERVOIRS." Ancient Mesoamerica 22, no. 1 (2011): 185–97. http://dx.doi.org/10.1017/s0956536111000149.
Full textAbstract:
AbstractIn the Maya lowlands ancient water management was multi-componential, diverse across space, and shifted over time. In the seasonally dry Puuc region of the northwestern Yucatan Peninsula, large reservoirs dominated water management during the Late Classic to Early Postclassic periods (a.d. 600–1250). Research reported here suggests that reservoirs were central components of Puuc urban settlements and that natural depressions—from which water reservoirs could be made in the Puuc terrain—were key settlement attractors in the region. In particular, new evidence of the pre-Hispanic construction of a berm of monumental proportions along the perimeter of a water reservoir at Xuch—a Late Classic to Early Postclassic Puuc Maya agro-urban settlement in Campeche, Mexico—stresses the political, economic, and symbolic importance of water and water reservoirs in pre-Hispanic Maya communities, previously demonstrated by colleagues working elsewhere in the Maya lowlands. This article discusses the “weight” of water reservoirs in Classic period Puuc Maya landscapes, adds to the literature on water management in other regions of the Maya lowlands, and explores aspects of economy, power, environment, and cosmology in water management systems of the dry regions of the northern Yucatan Peninsula.
46
Vanderkelen, Inne, Shervan Gharari, Naoki Mizukami, Martyn P. Clark, David M. Lawrence, Sean Swenson, Yadu Pokhrel, Naota Hanasaki, Ann van Griensven, and Wim Thiery. "Evaluating a reservoir parametrization in the vector-based global routing model mizuRoute (v2.0.1) for Earth system model coupling." Geoscientific Model Development 15, no. 10 (June 1, 2022): 4163–92. http://dx.doi.org/10.5194/gmd-15-4163-2022.
Full textAbstract:
Abstract. Human-controlled reservoirs have a large influence on the global water cycle. While global hydrological models use generic parameterizations to model dam operations, the representation of reservoir regulation is still lacking in many Earth system models. Here we implement and evaluate a widely used reservoir parametrization in the global river-routing model mizuRoute, which operates on a vector-based river network resolving individual lakes and reservoirs and is currently being coupled to an Earth system model. We develop an approach to determine the downstream area over which to aggregate irrigation water demand per reservoir. The implementation of managed reservoirs is evaluated by comparing them to simulations ignoring inland waters and simulations with reservoirs represented as natural lakes using (i) local simulations for 26 individual reservoirs driven by observed inflows and (ii) global-domain simulations driven by runoff from the Community Land Model. The local simulations show the clear added value of the reservoir parametrization, especially for simulating storage for large reservoirs with a multi-year storage capacity. In the global-domain application, the implementation of reservoirs shows an improvement in outflow and storage compared to the no-reservoir simulation, but a similar performance is found compared to the natural lake parametrization. The limited impact of reservoirs on skill statistics could be attributed to biases in simulated river discharge, mainly originating from biases in simulated runoff from the Community Land Model. Finally, the comparison of modelled monthly streamflow indices against observations highlights that including dam operations improves the streamflow simulation compared to ignoring lakes and reservoirs. This study overall underlines the need to further develop and test runoff simulations and water management parameterizations in order to improve the representation of anthropogenic interference of the terrestrial water cycle in Earth system models.
47
Hou, Jiawei, Albert I. J. M. van Dijk, Hylke E. Beck, Luigi J. Renzullo, and Yoshihide Wada. "Remotely sensed reservoir water storage dynamics (1984–2015) and the influence of climate variability and management at a global scale." Hydrology and Earth System Sciences 26, no. 14 (July 19, 2022): 3785–803. http://dx.doi.org/10.5194/hess-26-3785-2022.
Full textAbstract:
Abstract. Many thousands of large dam reservoirs have been constructed worldwide during the last 70 years to increase reliable water supplies and support economic growth. Because reservoir storage measurements are generally not publicly available, so far there has been no global assessment of long-term dynamic changes in reservoir water volumes. We overcame this by using optical (Landsat) and altimetry remote sensing to reconstruct monthly water storage for 6695 reservoirs worldwide between 1984 and 2015. We relate reservoir storage to resilience and vulnerability and investigate interactions between precipitation, streamflow, evaporation, and reservoir water storage. This is based on a comprehensive analysis of streamflow from a multi-model ensemble and as observed at ca. 8000 gauging stations, precipitation from a combination of station, satellite and forecast data, and open water evaporation estimates. We find reservoir storage has diminished substantially for 23 % of reservoirs over the three decades, but increased for 21 %. The greatest declines were for dry basins in southeastern Australia (−29 %), southwestern USA (−10 %), and eastern Brazil (−9 %). The greatest gains occurred in the Nile Basin (+67 %), Mediterranean basins (+31 %) and southern Africa (+22 %). Many of the observed reservoir changes could be explained by changes in precipitation and river inflows, emphasizing the importance of multi-decadal precipitation changes for reservoir water storage. Uncertainty in the analysis can come from, among others, the relatively low Landsat imaging frequency for parts of the Earth and the simple geo-statistical bathymetry model used. Our results also show that there is generally little impact from changes in net evaporation on storage trends. Based on the reservoir water balance, we deduce it is unlikely that water release trends dominate global trends in reservoir storage dynamics. This inference is further supported by different spatial patterns in water withdrawal and storage trends globally. A more definitive conclusion about the impact of changes in water releases at the global or local scale would require data that unfortunately are not publicly available for the vast majority of reservoirs globally.
48
Antsiferova, G. A., V. V. Kul’nev, S. L. Shevyrev, E. V. Bespalova, N. I. Rusova, and A. E. Skosar. "Artificial Water Bodies of the Voronezh River Basin and Algae Biotechnology in Water Quality Management." Ecology and Industry of Russia 22, no. 8 (August 1, 2018): 50–54. http://dx.doi.org/10.18412/1816-0395-2018-8-50-54.
Full textAbstract:
A brief review of the ecological state of artificial water bodies is presented on the example of the Voronezh and Matyr reservoirs located in the basin of the river. Voronezh. Ecological-geochemical interrelation of water areas of reservoirs and adjacent territories with anthropogenic sources of pollution located on them is shown. The basis of the research is the bioindication method for the communities of phytoplankton and microphytobenthos. Changes in the sanitary and biological quality of the waters have been studied in the reservoirs, which are related, in particular, to the effect of anomalously high summer air temperatures in 2010–2012 and in subsequent years, and for the Matyr reservoir against this background, an estimate of the effectiveness of the use of algobiotechnology is given.
49
Lee, Jaenam, and Hyungjin Shin. "Agricultural Reservoir Operation Strategy Considering Climate and Policy Changes." Sustainability 14, no. 15 (July 22, 2022): 9014. http://dx.doi.org/10.3390/su14159014.
Full textAbstract:
Agricultural water is affected by climate change and water management. Agricultural reservoirs are increasing demand on the environmental water supply because the Korean government has recently implemented an integrated water resource management policy. However, agricultural reservoirs are still in operation solely to supply agricultural water. To examine sustainable agricultural water management under climate change, we analyzed the strategy of operating regulations to efficiently distribute agricultural water as environmental water. We simulated the agricultural reservoir operation, analyzing its water supply capacity by applying operation regulations. The simulation predicted that future water supply capacity would decrease if the existing operation were maintained, and agricultural reservoir operation will be necessary in the future. The proposed reservoir operating strategy decreased the maximum water shortage and number of water shortage days compared with the existing operation with the required water supply. Our results can contribute to agricultural reservoir operation strategies and sustainable water management in response to climate change and provide decision-making guidance on water distribution for environmental use in response to water management policy changes.
50
Bianucci, P., A. Sordo-Ward, J. I. Pérez, J. García-Palacios, L. Mediero, and L. Garrote. "Risk-based methodology for parameter calibration of a reservoir flood control model." Natural Hazards and Earth System Sciences 13, no. 4 (April 18, 2013): 965–81. http://dx.doi.org/10.5194/nhess-13-965-2013.
Full textAbstract:
Abstract. Flash floods are of major relevance in natural disaster management in the Mediterranean region. In many cases, the damaging effects of flash floods can be mitigated by adequate management of flood control reservoirs. This requires the development of suitable models for optimal operation of reservoirs. A probabilistic methodology for calibrating the parameters of a reservoir flood control model (RFCM) that takes into account the stochastic variability of flood events is presented. This study addresses the crucial problem of operating reservoirs during flood events, considering downstream river damages and dam failure risk as conflicting operation criteria. These two criteria are aggregated into a single objective of total expected damages from both the maximum released flows and stored volumes (overall risk index). For each selected parameter set the RFCM is run under a wide range of hydrologic loads (determined through Monte Carlo simulation). The optimal parameter set is obtained through the overall risk index (balanced solution) and then compared with other solutions of the Pareto front. The proposed methodology is implemented at three different reservoirs in the southeast of Spain. The results obtained show that the balanced solution offers a good compromise between the two main objectives of reservoir flood control management.