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Muzdalifah, Safa Muzdalifah. "Local Government Subwatershed Management". International Journal of Southeast Asian Studies (IJSAS) 1, n. 2 (12 settembre 2023): 62–66. http://dx.doi.org/10.20527/ijsas.v1i2.12.
Testo completoAbstract (sommario):
The purpose of this study is to analyze the management of local government in the management of sub-watersheds affected by floods in Banjar Regency, South Kalimantan. The background of the research is the occurrence of floods in the sub-watershed in Banjar Regency. The provincial government has the authority to manage watersheds within the province, on the authority of the government, so an in-depth analysis is needed regarding the management of local governments in the management of sub watersheds in Banjar Regency. So, to answer the research problem, the research used descriptive qualitative method. The location of this research is in Banjar Regency. The key informants of the research are the South Kalimantan provincial government, especially those authorized in the Martapura Sub-watershed management, namely the Kayu Tangi Forest Management Unit Organization, and the Head of the South Kalimantan Province Environmental Service. The results of this study indicate that local governments in managing flood-affected sub-watersheds in Banjar Regency, South Kalimantan Province are formulated through basic watershed management steps. Watershed management steps taken include identification of watershed characteristics, analysis of problems, determination of technical alternatives for watershed management, preparation of watershed management plans, implementation of watershed management, and monitoring and evaluation of watershed management.
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Maman Noprayamin, Anis Saggaff, Arie Setiadi Moerwanto e Kiagus Muhammad Aminuddin. "Identification of Watershed Conditions and Formulation of Watershed Management Strategies". JOURNAL OF CIVIL ENGINEERING BUILDING AND TRANSPORTATION 7, n. 1 (1 marzo 2023): 301–10. http://dx.doi.org/10.31289/jcebt.v7i1.9185.
Testo completoAbstract (sommario):
In Indonesia, 39 watersheds were deemed essential in 1994, and the importance of watersheds grew in 2000. The existence of a watershed has the role of being able to sustain water availability, maintain the balance of the ecosystem and as a container for flowing water. The Musi-Sugihan-Banyuasin-Lemau River Area (WS MSBL), which has an area of 86680 km2 and is made up of 23 primary watersheds, is one of the largest watersheds in the Sumatra region. Research was done to determine the state of the watershed so that a strategy for watershed conservation could be chosen. In-depth interviews with stakeholders in the form of focus group discussions (FGD) were utilized as the study method to collect both secondary and primary data about the circumstances of the watershed as well as to gain in-depth management outcomes. The study's findings demonstrate that managing the WS MSBL watershed involves more than only technical issues; it also necessitates involving associated institutions and stakeholders, necessitating the creation of operational watershed management strategies.
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Supriatna, Agus, Hardina Arisa Alvia Rachman e Azis Hakim. "Forest Management Units As A Manager Of Watershed Management (Implementation Of One Watershed, One Plan, One Manager)". Mutiara: Multidiciplinary Scientifict Journal 2, n. 2 (5 marzo 2024): 980–85. http://dx.doi.org/10.57185/mutiara.v2i2.152.
Testo completoAbstract (sommario):
Watershed management is very important because there is a decrease in the quality of the environment in the watershed. Current problems in watershed management are due to the existence of an egosectoral, not yet integrated and the absence of institutions that specifically and intensely manage watersheds from upstream to downstream well through community empowerment programs and soil and water conservation activities. Forest Management Units as a site-level organization is present as a solution to the problem of watershed management by becoming a watershed manager. The watershed manager functions to coordinate, manage, and manage, together with other stakeholders to achieve watershed management objectives.
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Zardari, Noorul Hassan, Irena Binti Naubi, Nur Asikin Binti Roslan e Sharif Moniruzzaman Shirazi. "Multicriteria approach for selecting the most vulnerable watershed for developing a management plan/ Użycie wielu kryteriów do wyboru najbardziej wrażliwej zlewni w projektowaniu planu zarządzania". Journal of Water and Land Development 23, n. 1 (1 dicembre 2014): 61–68. http://dx.doi.org/10.1515/jwld-2014-0030.
Testo completoAbstract (sommario):
Abstract Listing of watershed management goals/targets is one of the integral parts of the management plan for a watershed. In this paper, we have listed 18 watershed management targets for which the Malaysian watersheds could possibly be managed in future. Based on the listed watershed management targets, the priority ranking of 18 targets is developed from the relative importance weights obtained from a survey conducted from 29 stakeholders. Three weighting methods (SWING, SMART, and SMARTER) were applied to elicit weights. We found that the SMART (Simple Multi-Attribute Rating Technique) weighting method was a favorable method for eliciting stable sets of weights for the watershed management targets. The SWING weighting method produces better weights than the SMARTER method. The listed watershed management targets will assist watershed managers and decision makers in decision making to use available resources (e.g. water quality, land-use, groundwater, and many other resources) in a more efficient and sustainable manner. The efficient utilization of all resources within a watershed will ultimately save watersheds (more specifically the urbanized watersheds) from further deterioration caused by unchecked infrastructure development activities
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Sapan, E. G. A., S. A. R. Riandasenya, Yulianingsani, Anisah, M. K. Ilmi e M. I. Habibie. "Health assessment of The Upper Citarum Watershed, West Java, Indonesia". IOP Conference Series: Earth and Environmental Science 1109, n. 1 (1 novembre 2022): 012082. http://dx.doi.org/10.1088/1755-1315/1109/1/012082.
Testo completoAbstract (sommario):
Abstract Citarum watershed is one of the national priority watersheds. Watershed health assessment activities are used as a reference in efforts to restore watershed conditions and improve watershed management planning. The watershed health was assessed for the Upper Citarum watershed in West Java, Indonesia. Three indicators, including hydrology and land cover were used to assess the watershed health. Hydrology indicators include the Annual Flow Coefficient (KAT) and River Regime Coefficient (KRA). Watershed health level assessment was conducted using Analytical Hierarchy Process (AHP) scoring method. Watershed health levels such as very unhealthy, unhealthy, moderately unhealthy, healthy, and very healthy were obtained by calculating each indicator total number of scores. From the health assessment result of The Upper Citarum watershed, the Annual Flow Coefficient indicator shows an unhealthy level, and River Regime Coefficient indicator shows very unhealthy level. In addition, the land cover indicator shows unhealthy level. Thus, because of a decreased vegetation cover over ten years. Based on the AHP weighting, it was found that The Upper Citarum watershed is at a very unhealthy level. Therefore, according to government regulations about proper watershed management, land cover vegetation must be managed to increase conservation and water quantity to maintain the Citarum watershed’s sustainability.
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Noor, Hamzeh, Mehdi Vafakhah e Majid Mohammady. "Comparison of different targeting methods for watershed management practices implementation in Taleghan dam watershed, Iran". Water Supply 16, n. 6 (29 aprile 2016): 1484–96. http://dx.doi.org/10.2166/ws.2016.048.
Testo completoAbstract (sommario):
Soil erosion and sediment control is important in watersheds with planned dam construction. For an efficient implementation of watershed management practices, identification of critical areas is vital. Many studies have made an effort to identify and prioritize critical sub-watersheds. But very limited studies have been conducted to rank sub-watersheds in terms of their sediment yield contribution at the watershed outlet. Therefore, the goal of this study is spatial priority of critical sources areas in Taleghan dam watershed based on three methods: (1) SSY-S: specific sediment yield at sub-watershed outlet (sediment yield/area), (2) SY-W: sub-watershed contribution to the sediment yield of the main watershed outlet/reservoir, and (3) SSY-W: specific sediment yield contribution of sub-watershed to the main watershed outlet/reservoir. The results of sub-watershed and prioritization showed that sub-watershed 22 has the highest sediment yield at its own sub-watershed outlet and main outlet of watershed. Also, implementing conservation practices in a high priority area shows a decrease in sediment yield at watershed outlet. However, sediment yield at outlet of watershed decreased about 11%, 15% and 17% from baseline scenario in methods 1, 2 and 3, respectively. The results show that the SSY-W method was more effective at reducing sediments entering the reservoir of Taleghan dam.
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Cassell, E. A., D. W. Meals, S. G. Aschmann, D. P. Anderson, B. H. Rosen, R. L. Kort e J. M. Dorioz. "Use of simulation mass balance modeling to estimate phosphorus and bacteria dynamics in watersheds". Water Science and Technology 45, n. 9 (1 maggio 2002): 157–68. http://dx.doi.org/10.2166/wst.2002.0229.
Testo completoAbstract (sommario):
Dynamic simulation technology is integrated with mass balance concepts and compartment-flux diagramming to create computer models that estimate contaminant export from watersheds over long and short-term futures under alternative simulated policies of watershed management. The Watershed Ecosystem Nutrient Dynamics (WEND) model, applied to developed watersheds with a mix of urban, agricultural, and forest land-uses, predicted phosphorus (P) export from three watersheds; a 275,000 ha dairy/urban watershed, a 77,000 ha poultry/urban watershed, and a 23,000 ha swine dominated watershed. Urban, agricultural, and forestry activities contribute to P export in different proportions. In all cases the P imports to the watershed exceed total export and P accumulates in watershed soils. Long-term future P export patterns are compared for several watershed management strategies that range from encouragement of rapid urban growth to aggressive environmental protection. The specific response of each watershed to imposed management is unique, but management strategies designed to reduce export of P over the long-term need to consider options that promote P input/output balance. Using this same approach, the Watershed Ecosystem Bacterial Dynamics (WEBD) model assesses the dynamics of bacterial populations in a small case-study watershed over an annual cycle as influenced by dairy farm management actions. WEND and WEBD models integrate the diversity of activities and stakeholders interested in the watershed and promote development of a more holistic understanding of watershed function. Model outputs are designed to assist watershed policy-makers, managers, and planners to explore potential future impacts of management/policy decisions.
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Puspitasari, Titik, Chay Asdak e Martha Fani Cahyandito. "Factors affecting payments for environmental services (PES) implementation in the Garang watershed management". E3S Web of Conferences 249 (2021): 01006. http://dx.doi.org/10.1051/e3sconf/202124901006.
Testo completoAbstract (sommario):
Watersheds has essential functions in human life and other living things that include hydrological and ecological functions. However, the number of critical watershed conditions are increasing and resulting in the degradation of the watershed function. The number of critical watersheds according to the 2009 forestry ministerial decree is 108 watersheds including Garang watershed. The landscape degradation of the upper areas will significantly affect hydrological conditions in downstream areas. Payment for environmental services (PES) is one of the alternatives of watershed management that combines interests in the upstream - downstream watersheds, especially in the form of water distribution. This study aims to identify important factors or criteria needed, especially related to the water environment services as a part of the integrated watershed management. The qualitative and quantitative method was used in this study with descriptive and CVM analysis used through the review literature, interview and survey. The analysis identifies important factors for PES in a sustainable watershed management which include its context, actors, financing systems, operations, and monitoring evaluation. The study also shows that some factors need improvement such as context (local regulation), actors (public understanding of the PES mechanism), operation (planning design), and low willingness to pay for PES implementation in Garang watershed. By properly defining the criteria of PES, watershed management can be managed in a way that the upper and downstream areas can be linked in an integrated way.
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Rudianto, Rudianto, Syarifuddin Kadir, Kissinger Kissinger e Mahrus Aryadi. "DINAMIKA PERUBAHAN PETA BATAS DAS MALUKA PROVINSI KALIMANTAN SELATAN". Jurnal Hutan Tropis 8, n. 3 (15 dicembre 2020): 366. http://dx.doi.org/10.20527/jht.v8i3.9740.
Testo completoAbstract (sommario):
A study on the dynamics of the Change Dynamics of the Maluka Watershed Boundary Map in South Kalimantan Province, which aims to analyze the Maluka Watershed Boundary is a large-scale approach, analyzing the dynamics of changes in some watershed characteristics (morphological and morphometric aspects) and conducting a policy direction towards the Compilation of the Maluka Watershed Boundary Watershed. The results of the Maluka watershed boundary scale of 1:50.000 there are changes and improvements in watershed boundaries in the downstream watershed due to river drainage, dredging, river displacement caused by human activities, new watersheds formed and SRTM level 30 x 30 m resolution, line repair and correction coastal and river networks and optical remote sensing. Morphometric and morphologic characteristics of Watersheds Significant changes in watershed area and administration area (reduced by 4.678 Ha or 5,3%). Other properties did not change significantly (Hydrologic DAS: 2 sub-watersheds, namely the Bati-Bati sub-watershed and Banyuhirang sub-watersheds), (Watershed shape: elongated (Rc <0,5)), (Slope class: flat 90,24%, steep and rather steep 2,14%), (Altitude/Elevation) Watershed: 2 masl to 50 masl 81,71%, above 300 masl 4,37%), (Watershed orientation: heading east to west in a straight direction, middle watershed symmetrical ballooning), (flow density, index value: 1,09 medium category) and (DAS flow pattern: Dendritic). Policy recommendations are suggested to synchronize the implementation of UU No. 23 Tahun 2014 and UU No. 37 Tahun 2014 in terms of carrying out the mandate of PP. 37 Tahun 2012, namely the implementation of the management of watershed management in the context of conservation of land, water in the ecosystem/watershed unit by giving the mandate to assist the task of sub-affairs management of watershed management from the provincial government to the district / city government.
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Katusiime, Juliet, e Brigitta Schütt. "Linking Land Tenure and Integrated Watershed Management—A Review". Sustainability 12, n. 4 (23 febbraio 2020): 1667. http://dx.doi.org/10.3390/su12041667.
Testo completoAbstract (sommario):
Land tenure is given attention in the general discussions on conservation and management of natural resources, but the necessary holistic approach to understand the linkages is less considered. Thus, we considered a watershed as a unit of reference and Integrated Watershed Management as a holistic land and water resources management approach with various roles and touchpoints with land tenure issues. To examine the role of land tenure on the management of natural resources in watersheds, we reviewed and compiled literature that captures watershed issues, integrating aspects of land tenure, and aiming to identify the key land tenure roles, dynamics, and its influences on integrated watershed management. Land tenure is observed playing various roles in watersheds and, thus, also on integrated watershed management as an approach—as a driver of change, influence for investment decisions, an incentive for adoption of practices, and leading to sustainability. Land tenure dynamics range from land tenure security, land tenure forms, land access and acquisition modalities, and how these aspects of land tenure relate with integrated watershed management.
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Triany, Novi, Muhammad Burhannudinnur, Aisha Averrelita Fauzia Jannah, Khoirul Arifin Syaifullah, Triatmojo Ajiwijaya, Himmes Fitra Yuda, Suherman Dwi Nuryana e Benyamin. "Morphometric Analysis for Sustainable River Management: A Case Study of Ciujung Watershed, Banten, Indonesia". E3S Web of Conferences 500 (2024): 02021. http://dx.doi.org/10.1051/e3sconf/202450002021.
Testo completoAbstract (sommario):
Ciujung watershed is located in Banten province, Indonesia. The Ciujung watershed is one of the watersheds that have a significant area coverage, such as Serang, Lebak, and the eastern part of Pandeglang. These areas are developing both in terms of population growth and infrastructure. Therefore, a more in-depth study of the Ciujung watershed, namely morphometric studies, is needed to optimize the utilization of the river's renewable natural resources and mitigate potential flood hazards in the watershed area. The method used is remote sensing based on DEMNAS satellite data using QGis software. The parameters analyzed were watershed shape, watershed area, river branch ratio, and river density. The results show that the Ciujung watershed is divided into 14 sub-watersheds. In general, the sub-watersheds have a bird feather shape, and some are radial and parallel, which causes some research areas to be very at risk of flooding. From the condition of river branching, most areas are unaffected by deformation. A small part of the deformed area occurs in the middle area of the Ciujung watershed. This is interpreted to be related to tectonic activity. The drainage density shows that the Ciujung watershed is based on resistant rocks and materials, so it is easily eroded and causes siltation of the river in the downstream area, which can trigger flooding.
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Risal, Avay, e Prem B. Parajuli. "Evaluation of the Impact of Best Management Practices on Streamflow, Sediment and Nutrient Yield at Field and Watershed Scales". Water Resources Management 36, n. 3 (febbraio 2022): 1093–105. http://dx.doi.org/10.1007/s11269-022-03075-7.
Testo completoAbstract (sommario):
AbstractEvaluating Best Management Practices (BMPs) in watersheds using hydrologic and water quality models can help to establish an effective watershed water management. Soil and Water Assessment Tool (SWAT) was applied to Big Sunflower River Watershed (BSRW) and the Stovall Sherard Watershed (SSW) to evaluate BMP’s impact at watershed and field scale watersheds respectively. SWAT was calibrated and validated for streamflow, sediment yield, total nitrogen (TN), and total phosphorous (TP) at outlets of three sub-basins of the BSRW, and within the SSW. BMP scenarios of check-dam, tail water pond, vegetative filter strips (VFS), nutrient management, and tillage management were evaluated for their efficacy in reducing streamflow, sediment yield, and nutrient loads at field and watershed scales. The VFS was determined as the most effective BMP in decreasing sediment yield, TN, and TP at both field and watershed scales. At field scale, reduction of sediment yield, TN, and TP by VFS ranged from 8 to 12%, 71% to 98%, and 72% to 99% respectively and at watershed scale, reduction of sediment yield, TN, and TP by VFS ranged from 12 to 38%, 29% to 87%, and 42% to 99% respectively. The application of conservation and zero tillage operation showed reduction in sediment yield by 1% to 2% respectively but increased TN and TP by 2% to 25% at field and watershed scale watersheds. This study will help in managing water at field and watershed scale watersheds regarding BMPs selection and implementation. Graphical Abstract
13
NOBLE, BRAM F., POORNIMA SHEELANERE e ROBERT PATRICK. "ADVANCING WATERSHED CUMULATIVE EFFECTS ASSESSMENT AND MANAGEMENT: LESSONS FROM THE SOUTH SASKATCHEWAN RIVER WATERSHED, CANADA". Journal of Environmental Assessment Policy and Management 13, n. 04 (dicembre 2011): 567–90. http://dx.doi.org/10.1142/s1464333211004012.
Testo completoAbstract (sommario):
Watersheds are under increasing pressures from the cumulative environmental effects of human actions. Reviews of recent practice suggest that cumulative effects assessment and management (CEAM) has failed to capture the full range of stressors to Canada's watersheds. Indeed, the limitations to CEAM have been well documented; yet, there has been limited constructive evaluation to help explain why CEAM has failed to advance. In this paper we examine the underlying challenges to the assessment and management of cumulative effects in a watershed context. Based on lessons emerging from the South Saskatchewan watershed, Canada, challenges to CEAM in watersheds include stakeholder understanding and interpretation of cumulative effects; limitations in the scale of current EA practices in watersheds; data challenges; the lack of established thresholds for watershed effects; and lack of clarity regarding watershed science and regulatory capacity. The merits of a watershed-based approach to CEAM to help address these challenges to practice are explored.
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Rana, Shubham, Prateek Thakran e Bhagya Jayant. "A Case Study Watershed of Siraspur Delhi". Journal of Engineering Research and Application 02 (2023): 38–42. http://dx.doi.org/10.55953/jera.2023.2105.
Testo completoAbstract (sommario):
In many nations, watershed development is a critical component of rural development and natural resource management initiatives. A watershed is a kind of common pool resource that consists of a geohydrological unit that drains to a common location through a series of drains. All regions on the planet are part of one or more watersheds, and even small land fragments act as watersheds (for this purpose a case study on VILLAGE SIRASPUR, DELHI is also a part of MICROWATERSHEDS IN DELHI). Watershed management is problematic because watershed systems include a variety of competing uses, thus any gain or cost will be distributed unevenly across users. Theories based on common research suggest that managing complex watersheds would be challenging, and that success will be restricted to isolated, actively aided micro watershed programmes with a social organisation emphasis. The simplest way to encourage community action is at the micro watershed level, yet good hydrological management necessitates effort at the macro watershed level. It also helps in recharging groundwater which is depleting in Delhi at alarming rate.
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Munoth, Priyamitra, Lalit Kumar Gehlot, P. L. Patel, Sumit Khandelwal, P. V. Timbadiya e Rohit Goyal. "Integrated hydrological modelling of two contrasting watersheds with a terminal reservoir in the Upper Tapi River basin, India". Water Supply 23, n. 12 (30 novembre 2023): 4891–907. http://dx.doi.org/10.2166/ws.2023.314.
Testo completoAbstract (sommario):
Abstract The present study developed an integrated hydrologic model for sustainable utilisation and water management in two complex watersheds with varying physioclimatic features and reservoirs. The soil and water assessment tool (SWAT) is used for predicting integrated inflows into the Hatnur reservoir from the Burhanpur and Purna watersheds of the Upper Tapi River basin, while outflows are simulated using a rule curve. The influence of watershed complexities on hydrological model parameters and the watershed processes are investigated using extensive multisite and multivariable calibration (1998–2007) and validation (2008–2013) approaches, including sensitivity and uncertainty analyses. The sensitive parameters are related to curve number (CN), groundwater, slope, and main channel characteristics. The annual streamflow (m3/km2/mm of rainfall) in the Burhanpur watershed is 568.7, which is 4.2 times higher than the Purna watershed's streamflow of 136.2. The hypsometric analysis, areal rainfall, and flow duration curves revealed a substantially different streamflow pattern and a larger coefficient of variation in the spatial distribution of water balance components over sub-watersheds in the Burhanpur watershed compared to the Purna watershed due to diverse topographic features. The developed model would be useful for planning controlled releases from the terminal reservoir to mitigate hazards in the downstream reaches of the Tapi River basin.
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Kim, Kyeung, Hakkwan Kim, Hyunji Lee, Sang-Min Jun, Soonho Hwang, Jung-Hun Song e Moon-Seong Kang. "Development and Assessment of Watershed Management Indicators Using the Budyko Framework Parameter". Sustainability 13, n. 7 (31 marzo 2021): 3864. http://dx.doi.org/10.3390/su13073864.
Testo completoAbstract (sommario):
This study aims to introduce the Budyko curve’s parameter (w) as a watershed quality indicator and establish criteria. Basin-specific (w) was calculated in 183 watersheds based on land use in 2013. Weather data and runoff data were used, and runoff data were calculated using Hydrological Simulation Program-Fortran (HSPF). An estimation model was developed to estimate the w of the unmeasured watershed, and the R2 of the developed model was 0.917, showing that the modeled value was reliable. A cluster analysis between basin-specific w and impervious area ratio in 2013 was performed to classify watershed quality. w was classified into four grades according to the dendrogram and impervious cover model. Watershed quality in 1975 and 2013 was evaluated using the developed indicators and criteria. The quality grades of 30 watersheds deteriorated, and the deteriorated watershed increased built-up and decreased forest and grass. To evaluate the indicators’ applicability, the low impact development (LID) method was applied to HSPF to confirm the indicator and criteria changes. It showed that the watershed to which LID was applied has improved indicator and reduced grade. The indicator developed in this study is expected to be useful for watershed quality assessment and analysis of improvement effects according to watershed management.
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Jin, Youngkyu, Sangho Lee, Taeuk Kang, Yeulwoo Kim e Namjoo Lee. "Framework for Healthiness Assessment of Water Cycle to Decide the Priority of Enhancement and Restoration Plans". Water 15, n. 1 (20 dicembre 2022): 6. http://dx.doi.org/10.3390/w15010006.
Testo completoAbstract (sommario):
The water cycle in watersheds is vulnerable due to climate change; hence, the need for sustainable watershed management is increasing. This paper suggests a framework for a healthiness assessment of the water cycle to provide a guideline for systematic watershed management considering the previous and current states. The suggested framework aims to prioritize restoration and enhancement plans based on the graded healthiness of the water cycle elements by the watersheds. The framework is composed of two assessment procedures: a problem-focused assessment to identify problems such as flood, drought, and river depletion in the watershed and the highest priority assessment to select the watershed for enhancement and restoration plans. The healthiness assessment method for each metric is suggested based on the Korean Framework Act on Water Management. The framework was applied to four different watersheds in South Korea. The framework is proven to be an effective method to identify practical emerging problems for the water cycle in each watershed. The framework can contribute to providing technical information to detect the water problem of the watershed by objectively diagnosing the watersheds with various potential water problems via the healthiness assessment.
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Lee, Jong-Won, Se-Rin Park e Sang-Woo Lee. "Effect of Land Use on Stream Water Quality and Biological Conditions in Multi-Scale Watersheds". Water 15, n. 24 (6 dicembre 2023): 4210. http://dx.doi.org/10.3390/w15244210.
Testo completoAbstract (sommario):
Understanding the relation between watershed land use and stream conditions is critical for watershed planning and management. This study investigated the effects of land use on stream water quality and biological conditions in sub-watersheds and micro-watersheds across the Han River watershed in South Korea. We developed random forest models for each water quality and biological indicator using the proportions of urban, agricultural, and forested areas. Our results indicate that water quality and biological indicators were significantly affected by forest area at both scales, and the sub-watershed models performed better than the micro-watershed models. Accumulated local effects were used to interpret the effect of each explanatory variable on the response variable. The plots for water quality and biological indicators with proportions of watershed land use demonstrated similar patterns at both scales, although the relation between land use and stream conditions was slightly more sensitive in micro-watersheds than in sub-watersheds. Urban and agricultural areas showed a lower proportion of water quality and biological condition variability in the micro-watersheds than in the sub-watersheds, while forests showed the opposite results. The findings of this study suggest that different spatial scales should be considered when developing effective watershed management strategies to maintain stream ecosystems.
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Eryani, I. Gusti Agung Putu, Abd Muluk Abd Manan e Made Widya Jayantari. "COMPARATIVE ANALYSIS OF WATERSHED CHARACTERISTICS IN BALI PROVINCE FOR SUSTAINABLE WATER RESOURCES MANAGEMENT". INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY 4, n. 2 (6 aprile 2021): 210. http://dx.doi.org/10.25105/urbanenvirotech.v4i2.8862.
Testo completoAbstract (sommario):
<p><strong>Aims</strong>: This research will provide an overview of the comparative analysis of watershed characteristics in Bali which are differentiated from watersheds flowing to the north, and watersheds flowing to the south of Bali Province. The aim is to determine the characteristics of each, and proper sustainable management for each watershed. <strong>Methodology and Results:</strong> This is a descriptive, quantitative research that analyzes and compares the characteristics of the Saba watershed and Unda watershed, where the characteristics analyzed are morphometric and hydrological. From the analysis, it was observed that the Unda watershed, which has a flow direction to the south of the island of Bali, and the Saba watershed, flowing to the north of the island of Bali, possess several differences and similarities. The similarities include rainfall patterns, high temperatures, and the comparison values between Qmax and Qmin is significant. Meanwhile, the differences include the Saba watershed slope being steeper than the Unda watershed, and the Saba has young geomorphic features, while the Unda watershed possesses advanced geomorphic features. <strong>Conclusion, significance, and impact of study:</strong> Differences in watershed characteristics lead to differences in the management carried out. Furthermore, in terms of hydrology, where there are lesser differences, the sustainable management of the Saba and Unda Watershed also require conservation in form of a reservoir (weir or dam). This is to enable the storage of water in the rainy period for the dry season.</p><p> </p>
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Eryani, I. Gusti Agung Putu, Made Widya Jayantari e I. Nyoman Nuri Artana. "Study of Yeh Embang Watershed Characteristics for Sustainable Water Management". IOP Conference Series: Earth and Environmental Science 1117, n. 1 (1 dicembre 2022): 012060. http://dx.doi.org/10.1088/1755-1315/1117/1/012060.
Testo completoAbstract (sommario):
Abstract One of Bali’s perennial watershed that is experiencing the effects of climate change is the Yeh Embang Watershed. If it is not managed holistically, the sustainability of the current water availability will be impacted. This research will analyse the Yeh Embang Watershed’s characteristics in order to evaluate the watershed’s condition and decide how to manage the sustainability of the water resources. For this research, topographic information, boundary maps of the Yeh Embang watershed, maps of river network, maps of land use, and maps of soil types were all used. The appropriate sustainable management for Yeh Embang Watershed should be determined based on the characteristic. According to the characteristics of the Yeh Embang Watershed, integrated management from upstream to downstream be necessary for the watershed to be managed sustainably. In the upstream area, it is hoped that the forest will be protected by forest conservation to reduce the risk of erosion that could lead to flash floods, and the downstream portion of the Yeh Embang watershed will be structured to prevent flooding from harming the surrounding area. Infiltration wells can be used as a water-saving measure in residential areas in the Yeh Embang watershed to increase the amount of water that is absorbed and lessen surface runoff.
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Era Alfansyuri, e Indra Farni. "Penentuan Zona Dan Karakteristik Daerah Aliran Sungai Dengan Analisa Spasial Sistem Informasi Geografis". Jurnal Ilmiah Poli Rekayasa 14, n. 1 (15 ottobre 2018): 34. http://dx.doi.org/10.30630/jipr.14.1.103.
Testo completoAbstract (sommario):
Watershed Management comprehensively considers the boundaries and characteristics of physical watersheds that have precision and detail of data sources. Determination of the Watershed zone in a digital process is supported by the development of satellite-based remote sensing surface data and supported by spatial data analysis management technology with Geographic Information System. Provincial spatial boundaries and watershed characteristics include the area, slope and land use in the area so as to support the watershed management.
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Petersen, Mark M. "A natural approach to watershed planning, restoration and management". Water Science and Technology 39, n. 12 (1 giugno 1999): 347–52. http://dx.doi.org/10.2166/wst.1999.0565.
Testo completoAbstract (sommario):
Each watershed has an overall hydrologic function to capture, store and safely release water. How well a watershed is able to perform this overall function is dependent upon how well each geomorphic component landform is functioning within the watershed. Each geomorphic component landform within a watershed has a specific hydrologic function and ecological potential. Component landforms that commonly occur in a watershed include stream channels, floodplains, stream terraces, alluvial valley bottoms, alluvial fans, mountain slopes, and ridge tops. When a component landform within a watershed becomes ecologically altered or degraded, its ability to perform its natural hydrologic and geomorphic functions becomes impaired and the watershed or ecosystem is unable to function properly. Component landforms within a watershed are interrelated. For example, the condition of a stream channel is closely related to the condition of its floodplain. Water from upland slopes is transported over and through alluvial fans and bottoms. Therefore, each component landform needs to be considered in the planning process and in setting watershed goals. This paper presents a simple field approach to inventory, evaluate and plan watershed restoration based on geomorphic, hydrologic and ecological principles. Examples of successful use of the approach on several watersheds in Utah, USA are given.
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Supangat, Agung Budi, Tyas Mutiara Basuki, Yonky Indrajaya, Ogi Setiawan, Nining Wahyuningrum, Purwanto, Pamungkas Buana Putra et al. "Sustainable Management for Healthy and Productive Watersheds in Indonesia". Land 12, n. 11 (24 ottobre 2023): 1963. http://dx.doi.org/10.3390/land12111963.
Testo completoAbstract (sommario):
Indonesian watershed management continues to struggle with various problems caused by natural disasters, particularly hydrometeorological disasters, which are worsened by the effects of climate change. Coordinating and synchronizing the interest of many parties in watershed management with various scenarios of natural conditions is a big challenge in the creation of a healthy and productive watershed. Multiple initiatives have been undertaken, from establishing rules and policies to implementing them and assessing the effects, leading to various lessons being learned for better management. This article presents a study on watershed management in Indonesia and recommends alternative improvements toward healthy and productive watershed management. A combination of a descriptive qualitative analysis of the authors’ experience in various research activities and a critical analysis is used to examine existing conditions and to formulate recommendations for better sustainable management toward a healthy and productive watershed. Most Indonesian watersheds are susceptible to degradation due to numerous threats. The challenges in Indonesian watershed management, including land degradation and climate-induced disasters, lack of synchronization and coordination, limited resources, and anthropogenic factors, have led to decreased watershed health and productivity and hindered effective management. Integrated management, especially at the micro-watershed level, addresses these challenges. Successful integrated watershed management requires community involvement, appropriate management action for specific locations, technological support, regulatory alignment, and stakeholder collaboration to ensure a healthy, productive, and sustainable watershed for present and future generations.
24
Ulibarri, Nicola, e Nataly Escobedo Garcia. "Comparing Complexity in Watershed Governance: The Case of California". Water 12, n. 3 (10 marzo 2020): 766. http://dx.doi.org/10.3390/w12030766.
Testo completoAbstract (sommario):
Environmental governance scholars argue that optimal environmental performance can be achieved by matching the scale of governance to the scale of the resource being managed. In the case of water, this means managing at the scale of the watershed. However, many watersheds lack a single watershed-scale organization with authority over all water resources and instead rely on cross-jurisdiction coordination or collaboration among diverse organizations. To understand what “watershed governance” looks like fully, this paper maps organizations with rights to use, regulate, or manage water in four subwatersheds in California (the American, Cosumnes, and Kings Rivers in the Sacramento-San Joaquin watershed and the Shasta River in the Klamath watershed). We assemble datasets of water organizations, water rights holders, and water management plans and use content analysis and social network analysis to explore what water management looks like in the absence of a single basin authority. We describe the institutional complexity that exists in each watershed, compare the physical and institutional interconnections between actors in the watersheds, and then ask to what extent these connections map onto watershed boundaries. We find that the ways in which water management is complex takes very different forms across the four watersheds, despite their being located in a similar political, social, and geographic context. Each watershed has drastically different numbers of actors and uses a very different mix of water sources. We also see very different levels of coordination between actors in each watershed. Given these differences, we then discuss how the institutional reforms needed to create watershed-scale management are unique for each watershed. By building a stronger comparative understanding of what watershed governance actually entails, this work aims to build more thoughtful recommendations for building institutional fit.
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Mandugay, Abdulbady E., Ozlem D. Macarimbang, Rhy-Ann B. Duyan, Saidin H. Ali e Joel S. Pardillo. "Community Participation in the Management, Protection, and Conservation of Watersheds: The Case of Davao City". International Journal for Research in Applied Science and Engineering Technology 10, n. 12 (31 dicembre 2022): 1172–75. http://dx.doi.org/10.22214/ijraset.2022.48104.
Testo completoAbstract (sommario):
Abstract: Watershed management is putting land use and water management practices in place to safeguard and enhance the integrity of water and other natural resources within a watershed. This is done by regulating the use of those land and water resources in a comprehensive approach [3]. Due to these concerns, watershed management often meets scientific problems and issues in public policy. The watershed areas of Davao City are critical as they are sources of essential services that support the city's economy, environment, and people's quality of life, such as clean drinking water and healthy fisheries. Watershed management in Davao City also faces challenges relative to the city's developments, including the threats brought by increasing population, culture, climate change, and resource overuse. In this study, the researchers evaluated the multi-sectoral participation in crafting policies, guidelines, and strategies toward ensuring the health and sustainability of the watershed areas. The study uses a qualitative research design that involves sending out structured questionnaires. This design can assess the multi-sector participation in the management, protection, and conservation of the eight watersheds in Davao City. The study provides information on the stakeholders' community participation in managing the Davao City watershed. The community is highly aware of the need to participate in managing, protecting, and conserving watersheds. This was exemplified by the organization of the Davao City Watershed Management Council members as a group with legal and moral duties to protect the watershed and sustainably utilize it.
26
Sriyana, Ignatius. "Developed watershed classification index determining management priority level based on watershed carrying capacity". MATEC Web of Conferences 270 (2019): 04004. http://dx.doi.org/10.1051/matecconf/201927004004.
Testo completoAbstract (sommario):
Watershed classification index is important in terms of determining watershed management priority level based on its carrying capacity score whereby currently watershed is classified into two indexes which are “to be maintained” if the carrying capacity score is below 100 and “to be restored” if it is above 100. This index fails to capture existing condition where there are watersheds with carrying capacity score in between 90 and 110. The purpose of this paper is to propose developed watershed classification index to determine management priority level based on watershed carrying capacity score. The method used to develop the watershed classification index is Classification Interval approach. The analysis is resulting in rigorous management priority level based on developed watershed classification index which is 50 < carrying capacity ≤ 90 as Priority 3 (watershed indexed as “to be maintained”), 90 < carrying capacity ≤ 110 as Priority 2 (watershed indexed as “to be improved”) and 110 < carrying capacity ≤ 150 as Priority 1 (watershed indexed as “to be restored”). Therefore, the correct management priority level for Gangsa Watershed that has carrying capacity of 106 is Priority 2.
27
Saputri, Indra Ria. "Health and Study Bogowonto Watershed Management Based on Hydrological Indicators". Asian Journal of Engineering, Social and Health 2, n. 7 (25 luglio 2023): 538–60. http://dx.doi.org/10.46799/ajesh.v2i7.111.
Testo completoAbstract (sommario):
The Bogowonto watershed was used as a research location because it is one of the largest watersheds with an area of 605.91 km 2 and has a sizeable contribution to the sustainability of water resources in Central Java Province. Watershed health assessment is intended to determine the level of health of the watershed by reviewing it watershed hydrological indicators based on the quantity of surface water. Relationship between indicators hydrology with the watershed health index described by the power regression model. Recommendations or directions watershed management planning priority scale from the results of an assessment of the appropriate watershed health level with PP RI No. 37 of 2012 concerning Watershed Management. The results of the analysis show that the health level of the Dodokan watershed from 2011 - 2020 is dominated by medium category. Connection watershed health index (IKD) with hydrological indicators yields which shows that the watershed health index is a function of hydrological indicators. watershed management planning recommended in the future is by: 1) the application of the technique soil and water conservation is carried out in order to maintain the continuity of the water catchment area, maintain the quality, quantity, continuity and distribution of water and 2) vegetation management is carried out in the context of conserving biodiversity, increasing land productivity, restoration ecosystem, rehabilitation and land reclamation.
28
Kaunang, Stella, Meilany Lengkong e Medy Ompi. "Integrating Social-Economic Approaches for Integrated Watershed Management and Coastal Area". Asian Journal of Engineering, Social and Health 2, n. 8 (25 agosto 2023): 641–48. http://dx.doi.org/10.46799/ajesh.v2i8.109.
Testo completoAbstract (sommario):
Integrated watershed management is a holistic and sustainable approach in managing water resources and the environment associated with river flow. One of the important aspects in integrated watershed management is to pay attention to the socio-economic aspects of the people living around the river. In many places in Indonesia, watershed bears a heavy burden due to its high population density and intensive utilization of natural resources, leading to environmental degradation and a decline in watershed conditions. On the other hand, the demands on watershed to support livelihood systems, including community activities and fisheries from upstream to downstream, coastal areas, and the sea, are substantial. The purpose of the study was to identify the socio-economic situation of the community and how to manage the watershed with the approach of the socio-economic aspects of the community. The method used was Qualitative analysis with observation, deep interview, and questionary. The purpose of the study was to identify the socio-economic situation of the community and how to manage the watershed with the approach of the socio-economic aspects of the community. The method used was Qualitative analysis with observation, deep interview, and questionary. The results showed that education level in the upstream area is higher than the downstream area. The level of education, employment, and community income can affect their attitudes and participation in watershed management activities. Communities who have higher education, jobs related to watersheds and coastal areas, and adequate income tend to be more active and aware of maintaining the sustainability of watersheds and coastal areas.
29
Saxe, Samuel, Terri S. Hogue e Lauren Hay. "Characterization and evaluation of controls on post-fire streamflow response across western US watersheds". Hydrology and Earth System Sciences 22, n. 2 (13 febbraio 2018): 1221–37. http://dx.doi.org/10.5194/hess-22-1221-2018.
Testo completoAbstract (sommario):
Abstract. This research investigates the impact of wildfires on watershed flow regimes, specifically focusing on evaluation of fire events within specified hydroclimatic regions in the western United States, and evaluating the impact of climate and geophysical variables on response. Eighty-two watersheds were identified with at least 10 years of continuous pre-fire daily streamflow records and 5 years of continuous post-fire daily flow records. Percent change in annual runoff ratio, low flows, high flows, peak flows, number of zero flow days, baseflow index, and Richards–Baker flashiness index were calculated for each watershed using pre- and post-fire periods. Independent variables were identified for each watershed and fire event, including topographic, vegetation, climate, burn severity, percent area burned, and soils data. Results show that low flows, high flows, and peak flows increase in the first 2 years following a wildfire and decrease over time. Relative response was used to scale response variables with the respective percent area of watershed burned in order to compare regional differences in watershed response. To account for variability in precipitation events, runoff ratio was used to compare runoff directly to PRISM precipitation estimates. To account for regional differences in climate patterns, watersheds were divided into nine regions, or clusters, through k-means clustering using climate data, and regression models were produced for watersheds grouped by total area burned. Watersheds in Cluster 9 (eastern California, western Nevada, Oregon) demonstrate a small negative response to observed flow regimes after fire. Cluster 8 watersheds (coastal California) display the greatest flow responses, typically within the first year following wildfire. Most other watersheds show a positive mean relative response. In addition, simple regression models show low correlation between percent watershed burned and streamflow response, implying that other watershed factors strongly influence response. Spearman correlation identified NDVI, aridity index, percent of a watershed's precipitation that falls as rain, and slope as being positively correlated with post-fire streamflow response. This metric also suggested a negative correlation between response and the soil erodibility factor, watershed area, and percent low burn severity. Regression models identified only moderate burn severity and watershed area as being consistently positively/negatively correlated, respectively, with response. The random forest model identified only slope and percent area burned as significant watershed parameters controlling response. Results will help inform post-fire runoff management decisions by helping to identify expected changes to flow regimes, as well as facilitate parameterization for model application in burned watersheds.
30
Muzdalifah, Safa, Farah Qubayla e Said Khaidir. "Management Strategy of Sub-Watersheds Affected By Flooding In Banjar District, South of Kalimantan". International Journal of Politic, Public Policy and Environmental Issues 1, n. 02 (15 agosto 2021): 126–34. http://dx.doi.org/10.53622/ij3pei.v1i02.33.
Testo completoAbstract (sommario):
Watershed Management is the process of formulating and implementing a series of activities involving natural and human resources in a watershed, taking into account social, political, economic, and institutional factors in the watershed and surrounding areas to achieve specific social goals. This study analyzes the local government's strategy in managing the affected sub-watersheds (DAS) flood- in Banjar Regency, South Kalimantan. The background of the research is the occurrence of floods in the sub-watershed in Banjar Regency. In a follow-up review, the provincial government has the authority to manage watersheds within the province. On the power of the government, and the existing conditions, an in-depth analysis of the local government's strategy in managing the sub-watershed in Banjar Regency is needed. To answer the research problem, a descriptive qualitative research method was used. The location of this research is in Banjar Regency. The key informants of the research are elements of the South Kalimantan provincial government, especially those authorized in the management of the Martapura Sub-watershed, namely the Kayu Tangi Forest Management Unit (KPH) Organization and the Head of the South Kalimantan Province Environmental Service. This study indicates that local governments in carrying out local government strategies in managing flood-affected watersheds apply reforestation strategies, and the construction of a dam, namely Riam Kanan Dam, and still in planning is the construction of Riam Kiwa Dam. The watershed management strategy has not been maximized in flood prevention because the Riam Kiwa Dam program and waterway maintenance have not been realized.
31
Ritabulan, Ritabulan, Rosmaeni Rosmaeni e Nurmaranti Alim. "Status Keberlanjutan Pengelolaan Das Mandar Di Sulawesi Barat, Indonesia". Jurnal Analisis Kebijakan Kehutanan 19, n. 2 (30 novembre 2022): 101–16. http://dx.doi.org/10.20886/jakk.2022.19.2.101-116.
Testo completoAbstract (sommario):
Mandar River is an important cultural entity for the Mandar community in West Sulawesi, in fact, faces threats such as floods and landslides. To support the government's efforts in achieving the Sustainable Development Goals (SDGs), the management of Mandar Watershed needs to integrate the ecological, economic, social, institutional, and technological dimensions. This study aims to: (1) measure the status of the sustainability of the Mandar Watershed; and (2) identify the factors that influence the sustainability of the Mandar watershed management. This research used the method of observation, interviews, documentation study, and literature review. Data analysis used a descriptive analysis approach and Multidimensional Scaling (MDS) analysis with analysis tools suc as rapfish / rapDASMandar. The results showed that the sustainability status of watershed management in the ecological dimension was quite sustainable; on the social and institutional dimensions, it is categorized as less sustainable; and in the economic and technological dimensions, the upstream and middle Mandar sub-watersheds are categorized as less sustainable. The multidimensional sustainability status of Mandar watershed management is categorized as less sustainable. There are 13 factors that need attention to improve the sustainability status of Mandar watershed management, especially in the technological, institutional, and social dimensions.
32
Kurniawan, Aptu Andy, Sunardi, Hendarmawan e Iwan Ridwansyah. "Evaluation of Watershed Carrying Capacity on Flood Management in Greater Malang East Java Indonesia". Revista de Gestão Social e Ambiental 18, n. 3 (3 luglio 2024): e07378. http://dx.doi.org/10.24857/rgsa.v18n3-155.
Testo completoAbstract (sommario):
Purpose: The over-depletion of natural resources in the Ambang watershed is the recent cause of the flooding in the region. The Ambang watershed, located in the larger Malang region of Indonesia's East Java Province, is the subject of this article because of the importance of this resource to local residents.This study follows the rules set out by Regulation No. P.61/2014 of the Indonesian Ministry of Forestry, which governs the assessment and monitoring of watershed management, in order to determine the Ambang watershed's effectiveness. Finding out how much water the Ambang watershed can hold and how well the regulation works to control floods were the two main goals of this research Method: This study primarily uses data on floods, conservation initiatives, land use, and water value in the Ambang river basin. Data and information on floods, conservation regulations, and the worth of water infrastructure comes from government sources and community discussions. The data on land usage was derived from the analysis of satellite images. Literature reviews and reports from key government agencies (such as the regional agricultural agency, the regional environmental protection agency, and the district government) were used to gather secondary data for the Ambang watershed management study Results and Conclusion: Land cover, as a percentage, can reduce run-off rates and enhance infiltration capacity in a watershed, hence monitoring it is crucial for assessing the state of land carrying capacity. With an area of 86,783.77 ha, the Ambang sub-watershed has 27,311.79 ha of vegetative land cover (PPV), which is classed as poor, falling between 20 and 40%. The result is expressed as a percentage. One way to measure the difference between allowed and actual erosion is via the Erosion Index. Based on the analysis, the Ambang sub-watershed, which covers an area of 86,783.77 ha, experiences heavy erosion on average with 190.8 tons/ha/year. The erosion index is 14.2, and the IE classification is > 2, which is very bad. This is due to factors such as steep to very steep slopes in some areas, poor to moderate soil conservation, and the presence of annual plants on the land, with some exceeding 25%. Research Implications: In order to better educate the public about the conservation and restoration efforts of different stakeholders and to improve the recommendations for potential conservation and restoration actions in each of the Ambang watershed regions, a series of investigations and experimental projects are planned. Laws enacted by the Indonesian government (number 37/2012) and the Ministry of Forestry (number 6061/2014) control the administration of water-related regions in the country. Before receiving any funds from the National State Budget, regional (provincial) governments must develop a management plan that takes into account the watershed's ability to sustain initiatives. Our investigation showed that Regulation 61/2014, issued by the Federal Forestry Minister, does not adequately evaluate the Ambang watershed's harbor capacity. Especially in arid regions, further studies should help Indonesian watersheds better gauge the potential of their water supplies.
33
Biswas, Asit K. "Watershed management". International Journal of Water Resources Development 6, n. 4 (dicembre 1990): 240–49. http://dx.doi.org/10.1080/07900629008722479.
Testo completo
34
Kim, Jinsun, Jiyeon Choi, Minji Park, Joong-Hyuk Min, Jong Mun Lee, Jimin Lee, Eun Hye Na e Heeseon Jang. "A Study on Identifying Priority Management Areas and Implementing Best Management Practice for Effective Management of Nonpoint Source Pollution in a Rural Watershed, Korea". Sustainability 14, n. 21 (27 ottobre 2022): 13999. http://dx.doi.org/10.3390/su142113999.
Testo completoAbstract (sommario):
It is difficult to accurately identify and manage the paths of nonpoint source (NPS) pollution in rural watersheds because their discharge patterns vary depending on season, region, and agricultural characteristics. In this study, flow and water quality during rainfall events were monitored in Songya watershed, an impaired, rural area in South Korea. A method of identifying priority management areas was proposed through scientific objectification and quantification of key factors controlling NPS, such as land use, agricultural type, and load. For the load calculation, a watershed model was developed using Hydrological Simulation Program Fortran (HSPF). Three priority management areas—Mulhan Stream, Osan Stream, and the upstream area of Songya Stream—were selected. Using the developed model, constructed wetlands with the capacity of 1000 m3 were applied at the lower reach of each priority management subbasin and the impacts on NPS pollution reduction were tested. The simulated results showed that BOD and TP concentrations at the outlet of Songya watershed were lowered by 9.2% and 6.0%, respectively. It is expected that the method proposed in this study for identifying priority management areas and implementing best management practice in agricultural watersheds can be applied to similar areas which struggled with NPS pollution.
35
Mardiatno, Djati, Faridah Faridah, Sunarno Sunarno, Dwi Wahyu Arifudin Najib, Yuli Widyaningsih e M. Anggri Setiawan. "TATAKELOLA LANSKAP RAWAPENING BERDASARKAN TINGKAT RESIKO BENCANA LINGKUNGAN DI SUB DAS RAWAPENING (Landscape governance of Rawapening based on the level of environmental disaster risk in the Rawapening Sub Watershed)". Jurnal Penelitian Pengelolaan Daerah Aliran Sungai 5, n. 1 (1 aprile 2021): 21–40. http://dx.doi.org/10.20886/jppdas.2021.5.1.21-40.
Testo completoAbstract (sommario):
Lake ecosystem balance is influenced by the interaction and interrelation of upstream and downstream processes of catchment. Environmental degradation upstream affects the trophic status of the lake, triggering the risk of environmental disasters. Integrated lake management is a form of governance to achieve sustainable development goals. This study aims to analyze the implementation of the Rawapening Lake management program plan spatially by considering the environmental risk conditions of the Rawapening catchment area. Semi-quantitative analysis is used to assess the level of disaster risk in Rawapening catchment area. The zoning results of environmental disaster risk areas are used as the basis for the implementation of the 2019 Rawapening lake management plan descriptively. The results showed that Rawapening catchment area has a very low, low, medium, high, and very high risk levels. Panjang Sub Watersheds, Galeh Sub Watersheds, Parat Sub Watersheds, Sraten Sub Watersheds have a high to very high risk level. The Rengas Sub Watershed, Torong Sub Watershed falls into the medium risk category. Low to very low risk levels are scattered in the Legi Sub Watershed, the Kedung Ringis Sub Watershed, and the Ringis Sub Watershed. The complexity of the problems in the agricultural, livestock, residential and industrial sectors is the main contributor to sediment and pollutants in the lake system. The integration of upstream and downstream processes is used as a consideration in conducting spatial planning for Rawapening Lake management to achieve management objectives
36
Cassell, E. A., R. L. Kort, D. W. Meals, S. G. Aschmann, J. M. Dorioz e D. P. Anderson. "Dynamic phosphorus mass balance modeling of large watersheds: long-term implications of management strategies". Water Science and Technology 43, n. 5 (1 marzo 2001): 153–62. http://dx.doi.org/10.2166/wst.2001.0274.
Testo completoAbstract (sommario):
The principles of mass balance, compartment-flux diagramming, and dynamic simulation modeling are integrated to create computer models that estimate phosphorus (P) export from large-scale watersheds over long-term futures. These Watershed Ecosystem Nutrient Dynamics (WEND) models are applied to a 275,000 ha dairy-documented watershed and a 77,000 ha poultry-dominated watershed in northeastern USA. Model predictions of present-day P export loads are consistent with monitoring data and estimates made using P export coefficients. For both watersheds P import exceeds P export and P is accumulating in the agricultural soils. Agricultural and urban activities are major contributors to P export from both watersheds. Continued urban growth will increase P export over time unless wastewater management is substantially enhanced and/or rates of urban growth are controlled. Agriculture cannot rely solely on the implementation of increasingly stringent conservation practices to reduce long-term P export but mustconsider options that promote P input/output balance. The WEND modeling process is a powerful tool to integrate the diversity of activities in watersheds into a holistic framework. Model outputs are suited to assist managers to explore long-term effects of overall watershed management strategies on P export in comparison to environmental and economic goals.
37
Prepas, Ellie E., Gordon Putz, Daniel W. Smith, Janice M. Burke e J. Douglas MacDonald. "The FORWARD Project: Objectives, framework and initial integration into a Detailed Forest Management Plan in Alberta". Forestry Chronicle 84, n. 3 (1 giugno 2008): 330–37. http://dx.doi.org/10.5558/tfc84330-3.
Testo completoAbstract (sommario):
The Forest Watershed and Riparian Disturbance (FORWARD) project input into the Millar Western Forest Products Ltd. Detailed Forest Management Plan consists of three main components: 1) watershed and stream layer maps and associated datasets; 2) soil and wetland layer maps and associated datasets; and 3) a lookup table that permits planners to determine runoff coefficients (the variable selected for hydrological modelling) for functional first order watersheds, based upon various site factors and time since disturbance. The watershed and stream layer component includes a hydrological network, a Digital Elevation Model, and Strahler classified streams and watersheds for functional first and third order watersheds in the entire Millar Western Forest Management Agreement area. Relatively coarse mineral soils (which drain quickly) and wetlands (which retain water) were the key features that needed to be identified for the FORWARD modelling effort; therefore, the soil and wetland layers represent a combined soil texture and wetland coverage. The runoff coefficient lookup table integrates predictions of hydrologic impacts of harvest into planning. Key words: forest management, watershed, hydrology, stream, soils, wetlands, modelling
38
Ramirez, Pulhin, Garcia, Tapia, Pulhin, Cruz, De Luna e Inoue. "Landscape Fragmentation, Ecosystem Services and Local Knowledge in the Baroro River Watershed, Northern Philippines". Resources 8, n. 4 (1 ottobre 2019): 164. http://dx.doi.org/10.3390/resources8040164.
Testo completoAbstract (sommario):
Landscape fragmentation, the breaking up of land use type into smaller parcels, isdamaging watersheds worldwide. Without addressing its causes, landscape fragmentation canpermanently destroy habitats and compromise ecosystem services (ES) that a watershed provides.This paper aims to establish associations between watershed landscape fragmentation and ES byintegrating science (satellite imageries and fragmentation analyses) and local geographicknowledge (key informant interviews and focus group discussions) at different time periods. Usingthe case of the Baroro River Watershed in Northern Philippines, this paper posits that localknowledge, when integrated with scientific knowledge, becomes a significant medium throughwhich watershed landscape fragmentation and declining quality of ES can be better understood andaddressed. Results also indicate that people’s experiences and knowledge on ES coincide withwatershed landscape fragmentation as evidenced by satellite images and fragmentation analysesdone at different time periods. This implies that people’s knowledge is well grounded on facts andcomplements scientific knowledge necessary in crafting more effective landscape policies that cantackle watershed fragmentation. Study results are also crucial in providing information to serve asinputs in the development of a more robust watershed management plan; particularly inimplementing sustainable land uses without sacrificing the watershed’s overall integrity.
39
Majidzadeh, Hamed, Huan Chen, T. Adam Coates, Kuo-Pei Tsai, Christopher I. Olivares, Carl Trettin, Habibullah Uzun, Tanju Karanfil e Alex T. Chow. "Long-term watershed management is an effective strategy to reduce organic matter export and disinfection by-product precursors in source water". International Journal of Wildland Fire 28, n. 10 (2019): 804. http://dx.doi.org/10.1071/wf18174.
Testo completoAbstract (sommario):
Watershed management practices such as prescribed fire, harvesting and understory mastication can alter the chemical composition and thickness of forest detritus, thus affecting the quantity and quality of riverine dissolved organic matter (DOM). Long-term effects of watershed management on DOM composition were examined through parallel field and extraction-based laboratory studies. The laboratory study was conducted using detritus samples collected from a pair of managed and unmanaged watersheds in South Carolina, USA. Results showed that dissolved organic carbon (DOC), total dissolved nitrogen (TDN) and ammonium (NH4+-N) concentrations were higher in water extracts from the unmanaged watershed than from the managed watershed (P<0.01). Pyrolysis gas chromatography–mass spectrometry analysis showed that water extracts from the unmanaged watershed contained more aromatic compounds than extracts from the managed watershed. For the field study, monthly water samples were collected for 1 year (2015) from the paired watersheds. DOC and TDN concentrations, as well as DOM aromaticity, were significantly higher in the unmanaged watershed than in the managed watershed for most of the year (P<0.05) and were linked to detrital thickness, precipitation and flow patterns. The formation potential of two regulated disinfection by-products was lower in the unmanaged watershed for most of 2015 (P<0.05). From this study, it appears that long-term watershed management practices may alter detrital mass and chemistry in ways that improve water quality.
40
Hubbart, Jason A., Elliott Kellner e Sean J. Zeiger. "A Case-Study Application of the Experimental Watershed Study Design to Advance Adaptive Management of Contemporary Watersheds". Water 11, n. 11 (9 novembre 2019): 2355. http://dx.doi.org/10.3390/w11112355.
Testo completoAbstract (sommario):
Land managers are often inadequately informed to make management decisions in contemporary watersheds, in which sources of impairment are simultaneously shifting due to the combined influences of land use change, rapid ongoing human population growth, and changing environmental conditions. There is, thus, a great need for effective collaborative adaptive management (CAM; or derivatives) efforts utilizing an accepted methodological approach that provides data needed to properly identify and address past, present, and future sources of impairment. The experimental watershed study design holds great promise for meeting such needs and facilitating an effective collaborative and adaptive management process. To advance understanding of natural and anthropogenic influences on sources of impairment, and to demonstrate the approach in a contemporary watershed, a nested-scale experimental watershed study design was implemented in a representative, contemporary, mixed-use watershed located in Midwestern USA. Results identify challenges associated with CAM, and how the experimental watershed approach can help to objectively elucidate causal factors, target critical source areas, and provide the science-based information needed to make informed management decisions. Results show urban/suburban development and agriculture are primary drivers of alterations to watershed hydrology, streamflow regimes, transport of multiple water quality constituents, and stream physical habitat. However, several natural processes and watershed characteristics, such as surficial geology and stream system evolution, are likely compounding observed water quality impairment and aquatic habitat degradation. Given the varied and complicated set of factors contributing to such issues in the study watershed and other contemporary watersheds, watershed restoration is likely subject to physical limitations and should be conceptualized in the context of achievable goals/objectives. Overall, results demonstrate the immense, globally transferrable value of the experimental watershed approach and coupled CAM process to address contemporary water resource management challenges.
41
Wahyudi, Wahyudi Isnan, Wahyudi Isnan Wahyudi e Hasnawir Hasnawir Hasnawir. "Analysis of Characteristics and Typology of Mapili Watershed West Sulawesi Province". Jurnal Wasian 5, n. 1 (30 giugno 2018): 21–34. http://dx.doi.org/10.62142/jka41436.
Testo completoAbstract (sommario):
The multisectoral, multidisciplinary, multi-stakeholder and multidimensional watersheds problems are the consequences of multifunctional watersheds. The complexity of these problems demanding a system and management approach that appropriate with the characteristics and typology of the watershed. This study aims to analyze the characteristics and typology of Mapili watershed West Sulawesi Province. This research was conducted using surveys, primary, and secondary data collection. Application of geographic information system (GIS) with overlay maps and scoring was used. The results showed that Mapili biogeophysical characterization includes meteorology, morphology, morphometry, hydrology, watershed capability and socioeconomic, cultural and institutional characterization will influence the system of Mapili watershed management. Mapili watershed can be classified into two typology watershed, namely: typology II, which has a low total population density (97 people/km2) with high rainfall (>2500 mm/yr); and typology IV, which has a high total population density (377 people/km2) with low rainfall (<1500 mm/yr). Both typologies have different characteristics of watershed problems. Typology II is generally located in the central area and upstream Mapili and Typology IV are located in the downstream areas of Mapili watershed.
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Merz, Leandra, Di Yang e Vanessa Hull. "A Metacoupling Framework for Exploring Transboundary Watershed Management". Sustainability 12, n. 5 (2 marzo 2020): 1879. http://dx.doi.org/10.3390/su12051879.
Testo completoAbstract (sommario):
Water is crucial for ecosystem health and socioeconomic development, but water scarcity is becoming a global concern. Management of transboundary watersheds is inherently challenging and has the potential to lead to conflict over the allocation of water resources. The metacoupling framework, which explores the relationships between coupled human and natural systems that are nested within multiple different scales, has been proposed to inform more holistic management of transboundary watersheds. This paper provides the first attempt to apply a metacoupling framework to a transboundary watershed for an improved integrated understanding of this complex system at multiple spatial scales. It does so with the transnational Limpopo River watershed in Southern Africa, which covers 1.3% of the continent and supports the livelihoods of 18.8 million people living in Botswana, Mozambique, South Africa, and Zimbabwe. Sub-Saharan Africa is experiencing a growing gap between water availability and demand; the primary drivers are population growth and agriculture expansion. The novelty of the paper is outlining the importance of applying a metacoupling framework to transboundary watersheds, identifying the limitations to this application, and providing a detailed assessment of the steps needed to complete this application. We also identify directions for future research including application of a metacoupling framework to other transboundary watersheds and exploration of spillover effects and externalities within this and other transboundary watersheds.
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Liu, Wenfei, Xiaohua Wei, Qiang Li, Houbao Fan, Honglang Duan, Jianping Wu, Krysta Giles-Hansen e Hao Zhang. "Hydrological recovery in two large forested watersheds of southeastern China: the importance of watershed properties in determining hydrological responses to reforestation". Hydrology and Earth System Sciences 20, n. 12 (1 dicembre 2016): 4747–56. http://dx.doi.org/10.5194/hess-20-4747-2016.
Testo completoAbstract (sommario):
Abstract. Understanding hydrological responses to reforestation is an important subject in watershed management, particularly in large forested watersheds ( > 1000 km2). In this study, we selected two large forested watersheds (Pingjiang and Xiangshui) located in the upper reach of the Poyang Lake watershed, southeastern China (with an area of 3261.4 and 1458 km2, respectively), along with long-term data on climate and hydrology (1954–2006) to assess the effects of large-scale reforestation on streamflow. Both watersheds have similar climate and experienced comparable and dramatic forest changes during the past decades, but with different watershed properties (e.g., the topography is much steeper in Xiangshui than in Pingjiang), which provides us with a unique opportunity to compare the differences in hydrological recovery in two contrasted watersheds. Streamflow at different percentiles (e.g., 5, 10, 50 and 95 %) were compared using a combination of statistical analysis with a year-wise method for each watershed. The results showed that forest recovery had no significant effects on median flows (Q50%) in both watersheds. However, reforestation significantly reduced high flows in Pingjiang, but had limited influence in Xiangshui. Similarly, reforestation had significant and positive effects on low flows (Q95%) in Pingjiang, while it did not significantly change low flows in Xiangshui. Thus, hydrological recovery is limited and slower in the steeper Xiangshui watershed, highlighting that watershed properties are also important for determining hydrological responses to reforestation. This finding has important implications for designing reforestation and watershed management strategies in the context of hydrological recovery.
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Sumalatha, IPPA, B. Asha V, Rakhi Sugunan, H. Pal Thethi, Bhishm Pratap, Mohammed H. Fallah e Preeti Maan. "Integrating forest management and Watershed health for Sustainable Water sources". E3S Web of Conferences 529 (2024): 03015. http://dx.doi.org/10.1051/e3sconf/202452903015.
Testo completoAbstract (sommario):
This paper explores the complex relationship among forest management practices and watershed health, emphasizing the crucial function of forests in sustaining freshwater sources. It critiques various factors impacting watershed fitness, including land use changes, deforestation, and urbanization. The study conducted here highlights the importance of sustainable forest management practices, such as environment-based techniques and carbon sequestration, in retaining water quality and quantity. Additionally, it discusses the impact of forest composition on watershed health and the subsequent results on soil approaches, water quality, and biodiversity. The paper additionally addresses the challenges and strategies in handling watersheds, considering the socio-economic, environmental, and political aspects. The findings recommend that an incorporated technique regarding community participation, cross-sectorial coverage integration, and advanced management strategies can improve watershed health and make a contribution to global water security.
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Hobbie, Sarah E., Jacques C. Finlay, Benjamin D. Janke, Daniel A. Nidzgorski, Dylan B. Millet e Lawrence A. Baker. "Contrasting nitrogen and phosphorus budgets in urban watersheds and implications for managing urban water pollution". Proceedings of the National Academy of Sciences 114, n. 16 (3 aprile 2017): 4177–82. http://dx.doi.org/10.1073/pnas.1618536114.
Testo completoAbstract (sommario):
Managing excess nutrients remains a major obstacle to improving ecosystem service benefits of urban waters. To inform more ecologically based landscape nutrient management, we compared watershed inputs, outputs, and retention for nitrogen (N) and phosphorus (P) in seven subwatersheds of the Mississippi River in St. Paul, Minnesota. Lawn fertilizer and pet waste dominated N and P inputs, respectively, underscoring the importance of household actions in influencing urban watershed nutrient budgets. Watersheds retained only 22% of net P inputs versus 80% of net N inputs (watershed area-weighted averages, where net inputs equal inputs minus biomass removal) despite relatively low P inputs. In contrast to many nonurban watersheds that exhibit high P retention, these urban watersheds have high street density that enhanced transport of P-rich materials from landscapes to stormwater. High P exports in storm drainage networks and yard waste resulted in net P losses in some watersheds. Comparisons of the N/P stoichiometry of net inputs versus storm drain exports implicated denitrification or leaching to groundwater as a likely fate for retained N. Thus, these urban watersheds exported high quantities of N and P, but via contrasting pathways: P was exported primarily via stormwater runoff, contributing to surface water degradation, whereas N losses additionally contribute to groundwater pollution. Consequently, N management and P management require different strategies, with N management focusing on reducing watershed inputs and P management also focusing on reducing P movement from vegetated landscapes to streets and storm drains.
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Atkinson, Samuel F., e Matthew C. Lake. "Prioritizing riparian corridors for ecosystem restoration in urbanizing watersheds". PeerJ 8 (4 febbraio 2020): e8174. http://dx.doi.org/10.7717/peerj.8174.
Testo completoAbstract (sommario):
Background Riparian corridors can affect nutrient, organic matter, and sediment transport, all of which shape water quality in streams and connected downstream waters. When functioning riparian corridors remain intact, they provide highly valued water quality ecosystem services. However, in rapidly urbanizing watersheds, riparian corridors are susceptible to development modifications that adversely affect those ecosystem services. Protecting high quality riparian corridors or restoring low quality corridors are widely advocated as watershed level water quality management options for protecting those ecosystem services. The two approaches, protection or restoration, should be viewed as complementary by watershed managers and provide a foundation for targeting highly functioning riparian corridors for protection or for identifying poorly functioning corridors for restoration. Ascertaining which strategy to use is often motivated by a specific ecosystem service, for example water quality, upon which watershed management is focused. We have previously reported on a spatially explicit model that focused on identifying riparian corridors that have specific characteristics that make them well suited for purposes of preservation and protection focused on water quality. Here we hypothesize that focusing on restoration, rather than protection, can be the basis for developing a watershed level strategy for improving water quality in urbanizing watersheds. Methods The model described here represents a geographic information system (GIS) based approach that utilizes riparian characteristics extracted from 40-meter wide corridors centered on streams and rivers. The model focuses on drinking water reservoir watersheds that can be analyzed at the sub-watershed level. Sub-watershed riparian data (vegetation, soil erodibility and surface slope) are scaled and weighted based on watershed management theories for water quality, and riparian restoration scores are assigned. Those scores are used to rank order riparian zones –the lower the score the higher the priority for riparian restoration. Results The model was applied to 90 sub-watersheds in the watershed of an important drinking water reservoir in north central Texas, USA. Results from this study area suggest that corridor scores were found to be most correlated to the amount of: forested vegetation, residential land use, soils in the highest erodibility class, and highest surface slope (r2 = 0.92, p < 0.0001). Scores allow watershed managers to rapidly focus on riparian corridors most in need of restoration. A beneficial feature of the model is that it also allows investigation of multiple scenarios of restoration strategies (e.g., revegetation, soil stabilization, flood plain leveling), giving watershed managers a tool to compare and contrast watershed level management plans.
47
Sudia, La Baco, Kahirun Kahirun, Surya Cipta Ramadhan Kete e La Ode Muhammad Erif. "Watershed Management Performance Assessment Based on Land Condition Indicators (Laeya Watershed Case, Southeast Sulawesi Province". ASTONJADRO 12, n. 2 (28 aprile 2023): 583–90. http://dx.doi.org/10.32832/astonjadro.v12i2.10834.
Testo completoAbstract (sommario):
Laeya Watershed is one of the three Priority Watersheds in Southeast Sulawesi. Therefore, monitoring and evaluating watershed performance is very important to ensure that watershed management is sustainable. This study aims to assess the performance of watershed management based on indicators of land conditions in the Laeya Watershed, Southeast Sulawesi Province. The method used is a survey with a scoring technique using the parameters index of the percentage of critical land, vegetation cover, and erosion index to determine the carrying capacity of the watershed. The results showed that the carrying capacity of the Laeya Watershed was classified as very good with a score of 35 (<70), with each sub-criterion of critical land classified as very low with a score of 0.5, sub-criteria for vegetation cover classified as good with a score of 0.75 and sub-criteria the erosion index criteria are classified as very high with a score of 0.75. It can be concluded that the management performance of the Laeya watershed is very good.
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Jung, Woo Suk, e Young Do Kim. "Evaluation of Watershed Water Quality Management According to Flow Conditions through Factor Analysis and Naïve Bayes Classifier". Sustainability 15, n. 13 (25 giugno 2023): 10038. http://dx.doi.org/10.3390/su151310038.
Testo completoAbstract (sommario):
Previous studies on water quality assessment for watershed management have predominantly focused on specific seasonal or annual average values, rather than considering water quality variations based on flow fluctuations. It is crucial to identify the water quality characteristics within a watershed by incorporating flow conditions to establish a customized watershed management approach over different time periods. In this study, a vulnerability analysis was conducted to attain the target water quality (TWQ) in 22 watersheds within the Nakdong River system in South Korea. Additionally, factor analysis (FA) was employed to analyze the characteristics of water quality fluctuations in relation to flow conditions. The FA results categorized the pollution source characteristics of the 22 watersheds into various types, indicating the need for specific pollution source management strategies. These findings enabled an initial decision-making process regarding which water pollution sources to prioritize based on flow conditions. Moreover, detailed analyses of pollution sources were performed for watersheds, where achieving TWQ was challenging. Subsequently, a data-based prediction model was developed using the naïve Bayes classification model to determine the likelihood of achieving TWQ. As a result, this study proposes a technique for water quality management in watersheds by introducing a water quality excess probability model, which employs data-based analysis instead of traditional numerical modeling for watershed water quality assessment and proactive prediction. The study discusses the potential of various data-based tools to reduce development and analysis time, providing a powerful alternative to physical-based models that require extensive input data and are time-consuming. To advance future studies, the establishment of comprehensive water environment big data, improvement of real-time monitoring systems within watersheds, and advancements in spatial and temporal observation technologies are emphasized as essential for the development of an advanced watershed management system.
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Adem, Anwar A., Gashaw G. Addis, Dessalew W. Aynalem, Seifu A. Tilahun, Wolde Mekuria, Mulugeta Azeze e Tammo S. Steenhuis. "Hydrogeology of Volcanic Highlands Affects Prioritization of Land Management Practices". Water 12, n. 10 (27 settembre 2020): 2702. http://dx.doi.org/10.3390/w12102702.
Testo completoAbstract (sommario):
Volcanic highlands supply water to 40% of the world’s population. Soil degradation threatens this water supply. Studies on geohydrology that affect the effectiveness of land and water management (LWM) practices in reducing soil degradations are limited. To aid in the effectiveness of LWM practices, we conducted a field experiment in the Gomit watershed in the semihumid Ethiopian Highlands on the interaction of hydrogeology and LWM practices. We found that in a watershed with strongly faulted tertiary basalt, 30% of the rainfall was drained through faults to another basin. Consequently, the discharge at the outlet was less than half of that of other watersheds with quaternary basalts. Despite the high sediment concentration, i.e., around 15 g L−1, in the Gomit watershed, the sediment yield of less than 4 Mg ha−1 a−1 was below average for the agricultural watershed in Ethiopia because of the low runoff response. While some faults facilitated drainage, others acted as a barrier. Groundwater stored behind the barriers was used as a municipal potable water source. Since the effectiveness of LWM practices depends on the amount of erosion that can be prevented, considerations of country-wide prioritizing of investments in land and water management practices should include the geology of the watersheds.
50
Lo, WeiCheng, Chang-Mien Wang, Chih-Tsung Huang e Meng-Hsuan Wu. "Impact of Human Development on the Phenomenon of Surface Runoff Crossing Adjacent Watershed Boundaries". Water 16, n. 13 (27 giugno 2024): 1831. http://dx.doi.org/10.3390/w16131831.
Testo completoAbstract (sommario):
The concept of watersheds, also called catchments, is fundamental to both flood mitigation and water resource management, as it greatly aids in the calculation of overland flow attributes. Watershed boundaries are typically determined by elevation, as water adheres to the geological characteristics of watersheds under natural circumstances and does not cross watershed boundaries. However, advances in human development have caused elevation and land usage changes, and boundaries between adjacent watersheds in downstream areas with flat terrain have become unclear and unstable. This study chose the Kaoping River watershed and Donggang River watershed as the study area, to investigate the cross-watershed runoff phenomenon under different return period rainfall. Based on land use surveys of the study area, the area in proximity to the boundary between the two watersheds was highly developed, with land primarily used for agriculture, buildings, and transportation. As the study area was highly developed, cross-watershed runoff was observed, even in the 2-year return period rainfall simulation case. The size and depth of the areas where cross-watershed runoff occurred became stable in the simulation cases, with return periods of 25 years or greater due to the surrounding high-elevation terrain obstructing further surface runoff development. Thus, when planning for flood mitigation, cross-watershed runoff from adjacent watersheds must also be considered, in addition to normal surface runoff.