Relevant bibliographies by topics / Water quality – Ontario

Academic literature on the topic 'Water quality – Ontario'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Water quality – Ontario"

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Barica, J., M. N. Charlton, D. J. Poulton, and R. Kohli. "Water Exchange Between Lake Ontario and Hamilton Harbour: Water Quality Implications." Water Quality Research Journal 23, no. 2 (May 1, 1988): 213–26. http://dx.doi.org/10.2166/wqrj.1988.014.

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Abstract Hamilton Harbour is an enclosed body of water situated at the western end of Lake Ontario and containing about 2.8 x 108 m3 of water, polluted by municipal and industrial effluents. It is connected to Lake Ontario by a ship canal, which facilitates a substantial exchange of water between the two water bodies. Exchange of harbour and lake water through the canal reduces the theoretical hydraulic residence time of the harbour and contributes to improvement of the harbour water quality through dilution and oxygenation. Without it, the Hamilton Harbour water quality situation would be more critical. The beneficial effect of dilution by Lake Ontario far exceeds contamination of western Lake Ontario by Hamilton Harbour water.
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Clapper, Julia, and Steven B. Caudill. "Water quality and cottage prices in Ontario." Applied Economics 46, no. 10 (February 4, 2014): 1122–26. http://dx.doi.org/10.1080/00036846.2013.851778.

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Carr, Geneviève M., Sarah A. E. Bod, Hamish C. Duthie, and William D. Taylor. "Macrophyte biomass and water quality in Ontario rivers." Journal of the North American Benthological Society 22, no. 2 (June 2003): 182–93. http://dx.doi.org/10.2307/1467991.

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Rao, Yerubandi R., J. E. Milne, and C. H. Marvin. "Hydrodynamics and water quality in western Lake Ontario." Journal of Great Lakes Research 38 (January 2012): 91–98. http://dx.doi.org/10.1016/j.jglr.2012.04.001.

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de Loë, Robert C. "THE INSTITUTIONAL PATTERN FOR WATER QUALITY MANAGEMENT IN ONTARIO." Canadian Water Resources Journal 16, no. 1 (January 1991): 23–43. http://dx.doi.org/10.4296/cwrj1601023.

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Scharfenaker, Mark A. "Ontario on fast track to drinking water quality management." Journal - American Water Works Association 94, no. 9 (September 2002): 14–24. http://dx.doi.org/10.1002/j.1551-8833.2002.tb09533.x.

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Ahmed, Syed I., Amanjot Singh, Ramesh Rudra, and Bahram Gharabaghi. "Comparison of CANWET and HSPF for water budget and water quality modeling in rural Ontario." Water Quality Research Journal 49, no. 1 (August 27, 2013): 53–71. http://dx.doi.org/10.2166/wqrjc.2013.044.

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This study comparatively evaluates the Hydrological Simulation Program-FORTRAN (HSPF) model and the Canadian ArcView Nutrient and Water Evaluation Tool (CANWET) for non-point source pollution (NPS) management in rural Ontario watersheds. Both models were calibrated, validated, and applied to a 52 km2 headwater rural watershed known as the Canagagigue Creek near Elmira in the Grand River basin, Ontario, Canada. A comparison of the simulated and observed values for stream flow, surface runoff, subsurface runoff, evapotranspiration, and sediment yield showed that (Better Assessment Science Integrating Point and Nonpoint Sources) BASINS/HSPF and CANWET models have similar capabilities to simulate various hydrological processes at the watershed scale. The seasonal stream flow comparison between observed and simulated values from HSPF and CANWET showed Nash-Sutcliffe efficiency (Nash-E) coefficients of 0.80 and 0.72, respectively. The monthly comparison between the simulated and observed stream flow yielded Nash-E coefficients of 0.88 and 0.94 for HSPF and CANWET, respectively. Overall, both models predicted the components of the annual, seasonal, and monthly water budget accurately. There was a considerable difference in the monthly simulated sediment yield by both models. This difference is consistent with the surface runoff variation predicted by both models. Both models predicted sediment yield with early winter and spring storms which is typical for southern Ontario.
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Gemza, A. F. "Water Quality Improvements during Hypolimnetic Oxygenation in Two Ontario Lakes." Water Quality Research Journal 32, no. 2 (May 1, 1997): 365–90. http://dx.doi.org/10.2166/wqrj.1997.024.

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Abstract Two eutrophic lakes with seasonally anoxic hypolimnion were oxygenated utilizing hypolimnetic pure oxygen injection during 1995. Natural stratification was not disturbed. At Whittaker Lake, hypolimnetic oxygen levels were maintained between 4.0 and 5.0 ppm. Hypolimnetic total phosphorus concentrations did not increase beyond spring turnover levels, and lower concentrations of iron and manganese were measured, along with the elimination of all detectable hydrogen sulphide. The typical blue-green algal blooms fouling shorelines in the late summer and fall did not manifest themselves, but improvements in water clarity were not as dramatic as those observed at the second study site. During hypolimnetic oxygen injection in Heart Lake, where hypolimnetic oxygen levels were maintained at 2.0 ppm, the decline of zooplankton populations after a brief spring surge (clear water phase) was stopped and a shift to larger-bodied herbivorous cladocerans was observed — Bosminids were replaced by Ceriodaphnia species. Annual median water clarity improved from preaeration readings of 1.9 m to over 3.0 m. Small increases in hypolimnetic total phosphorus concentrations were observed in late summer under low level oxygenation, but were significantly less than pretreatment concentrations. The maintenance of an oxic hypolimnetic refugia not accessible to predator fish, but still able to oxidize sediments, was deemed important to the water clarity improvements. Historically low blue-green algal biovolumes and chlorophyll concentrations were recorded, and no beach closures due to algal blooms occurred. Hypolimnetic oxygenation is an effective tool which can improve lake water quality and ecosystem integrity.
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Yurista, Peder M., John R. Kelly, Samuel Miller, and Jon Van Alstine. "Lake Ontario: Nearshore conditions and variability in water quality parameters." Journal of Great Lakes Research 38 (January 2012): 133–45. http://dx.doi.org/10.1016/j.jglr.2011.09.002.

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Bodo, Byron A. "Statistical analyses of regional surface water quality in southeastern Ontario." Environmental Monitoring and Assessment 23, no. 1-3 (December 1992): 165–87. http://dx.doi.org/10.1007/bf00406960.

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Dissertations / Theses on the topic "Water quality – Ontario"

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Mejía, Manuel. "Effects of water table management on water quality and strip cropped corn-soybean yields." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=27378.

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A two-year field study was carried out in eastern Ontario to investigate the effects of water table management (WTM) on water quality and crop yields. Corn (Zea mays L.) and soybean (Glycine max Merr.) were planted in alternate strips across the three treatments of 50 cm controlled water table (CWT), 75 cm CWT and free drainage (FD). Drainflow volume and nitrate-N concentration of the drainage water were measured. Soil samples were collected and analysed for total N, P, K, available N, soil moisture and organic matter levels. Chlorophyll-meter readings and plant harvest parameters were also measured. Rainfall, soil and air temperatures were recorded throughout the growing seasons.
The obtained data show that in 1995, the CWT plots significantly increased total drainflow, as compared to FD. In 1996, overall drainflow and nitrate concentrations were significantly reduced. Both the corn and soybean yields were higher with WTM than with FD for both years. (Abstract shortened by UMI.)
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Dean, Stuart L. "Benthic macroinvertebrate response to water quality in three rivers of Eastern Ontario." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0017/MQ57104.pdf.

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Bonte-Gelok, Shelly N. "Interpretation of historical surface water quality data in Huron County, Ontario, Canada." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ61876.pdf.

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Lalonde, Benoît. "Relationships between water quality and stream invertebrate assemblages of Eastern Ontario and Western Quebec." Thesis, University of Ottawa (Canada), 1999. http://hdl.handle.net/10393/8694.

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Forty-seven riffle zones from 21 streams of Eastern Ontario and Western Quebec were sampled in 1998 to describe how characteristics of the benthic invertebrate assemblage (abundance, taxa richness and size distribution) varied as a function of water quality parameters (conductivity, TP, SRP, TSS, NO3+NO2, NH3, TKN, Cl-, SO42-) along a gradient of watershed development. A principal components analysis on water quality parameters revealed that there were two groups of correlated water quality variables that explained the majority of the variability among sites. The first group of variables included chloride, sulfate, nitrate+nitrite and conductivity and represented a gradient of urbanization while the second group represented nutrients and included: soluble reactive phosphorus, total phosphorus, ammonia, total suspended solids and total Kjeldahl nitrogen. Simple and multiple regression models predicting invertebrate assemblage characteristics were fitted using water quality principal components scores as independent variables. Overall, invertebrate assemblage characteristics were related to both groups of water quality variables. Abundances per taxon and size classes generally increased with increased nutrients, and overall abundance and the ratio of abundances of sensitive to tolerant taxa declined with increasing chloride, sulfate, nitrate+nitrite and conductivity. Existing information suggests that the water quality gradient found in these streams is more a reflection of anthropogenic sources than the result of geological differences. Therefore, it appears that human activities affect the distribution and abundance of invertebrates in this region. However our models did not explain a good proportion of the variability. It would seem that stream invertebrates of the Ottawa valley are also affected by other parameters that have yet to be identified.
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Lalonde, Benoît. "Relationships between water quality and stream invertebrate assemblages of Eastern Ontario and Western Québec." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ48161.pdf.

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Houlahan, Jeff E. "The effects of adjacent land-use on water quality and biodiversity in southeastern Ontario wetlands." Thesis, University of Ottawa (Canada), 2002. http://hdl.handle.net/10393/6453.

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Over the last 150 years the 'natural' landscape in southeastern Ontario (as in much of the world) has undergone a dramatic transformation due, in large part, to widespread deforestation, wetland destruction and degradation, and increased agricultural activity. The negative impacts of such land-use modifications may include declines in wetland water quality and biodiversity. Here, I develop models to predict the effects of adjacent land-use on wetland water quality, and amphibian and plant diversity using indices of land-use intensity such as, forest cover, road density, building density, fertiliser application, livestock density etc. I find negative relationships between land-use intensity and wetland water quality, and amphibian and plant species richness. The strongest relationships tend to be with forest cover, however, other important variables include wetland size, road density, and the proportion of adjacent lands that is wetland. Moreover, there are complex interactions among variables. For instance, part of the effect of forest cover on plant and amphibian species richness may be indirect, through effects on wetland water quality but there are also effects of forest cover on both plants and amphibians that are independent of wetland water quality. In a conservation context, one important question is 'what is the scale of adjacent land-use effects?' I find that landscape modifications up to 2000--4000 meters from a wetland edge have the strongest correlations with wetland water quality and amphibian species richness while, land-uses 250--400 meters from the wetland edge are most strongly correlated with plant species richness. The conservation implication is that the current Ontario Wetland Policy which (1) evaluates and protects wetlands on a site-by-site basis and, (2) regulates adjacent land-use out to 120 meters from the wetland edge, is not likely to ensure long-term protection of wetland water quality and biodiversity in Ontario.
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Wilkinson, Anna N. "Chrysophycean stomatocysts as indicators of anthropogenically induced water quality changes in south-central Ontario lakes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq20711.pdf.

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McFadden, Nanette. "Agricultural NGO's and their participation in the soil erosion and water quality management problem, in Ontario." Thesis, University of Ottawa (Canada), 1994. http://hdl.handle.net/10393/10054.

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The purpose of this research is to describe and analyze the present and potential role of non-governmental organizations (NGO's) in the management of agricultural soil erosion and associated water quality decline (ASEWQ), in Ontario. A series of five tasks are associated with this research purpose. These tasks include: the cataloguing of all agricultural NGO's in Ontario; the assessment of this NGO population's vertical interaction; the assessment of the NGO population's horizontal spread; analysis of NGO mobilization potential in the area of ASEWQ management; and finally the characterization of degree of NGO favourability towards, and involvement in, ASEWQ management. Research has led to the discovery of a very large and complex population of agricultural organizations in Ontario. The horizontal distribution of this population closely reflects the geographic configuration of agricultural activity in the province. The vertical distribution reveals a high degree of organizational affiliation and networking which gives the grassroots indirect access to provincial policy influence. Despite the size, complexity and general favourability of this population towards soil conservation, few NGO's have suitable potential to mobilize on the ASEWQ issue. As a result, only a few strategically placed and organized NGO's have any involvement in controlling agricultural soil erosion. In conclusion, this research offers a series of recommendations to provincial government agricultural policy makers and future research avenues. (Abstract shortened by UMI.)
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Hyatt, Crystal Victoria. "A diatom-based paleolimnological investigation of historical water-quality and ecological changes in the Lake of the Woods, Ontario." Kingston, Ont. : [s.n.], 2010. http://hdl.handle.net/1974/5691.

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Singh, Rajesh Kumar. "Identification of critical areas of non-point source pollution from flat agricultural watersheds." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ37167.pdf.

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Books on the topic "Water quality – Ontario"

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Lake Ontario Toxics Committee. Lake Ontario toxics management plan. [Toronto: The Committee], 1989.

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Lake Ontario Toxics Committee. Lake Ontario toxics management plan: 1991 update. [Ottawa?]: The Committee, 1991.

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Lake Ontario Toxics Committee. Lake Ontario toxics management plan: Executive summary. [Toronto: The Committee, 1989.

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Canada, Canada Agriculture. Ontario farm groundwater quality survey. Ottawa, Ont: Agriculture Canada, 1991.

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Poulton, D. J. 1985 bacteriological water quality at Kingston, Lake Ontario. [Toronto]: Ontario Ministry of the Environment, 1987.

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Canada-Ontario Agreement on Great Lakes Water Quality. Canada-Ontario agreement respecting Great Lakes water quality. [Ottawa?: s.n.], 1985.

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Committee, Lake Ontario Toxics. Lake Ontario toxics management plan: Summary and issues for public discussion. [Toronto, Ontario]: Lake Ontario Toxics Committee, 1988.

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Laine, A. Water quality in the Hemlo, Ontario, gold mining region. [Ontario]: Ministry of the Environment, 1992.

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Laine, A. Water quality in the Hemlo, Ontario, gold mining region. [Ontario]: Ministry of the Environment, 1992.

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Flint, R. Warren. Lake Ontario: A Great Lake in transition. Buffalo, N.Y: Great Lakes Program, State University of New York at Buffalo, 1989.

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Book chapters on the topic "Water quality – Ontario"

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Rodgers, D. W., D. W. Evans, and L. Vereecken Sheehan. "Toxicity Reduction of Ontario Hydro Radioactive Liquid Waste." In Clean Water: Factors that Influence Its Availability, Quality and Its Use, 219–29. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0299-2_22.

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Halfon, Efraim. "Volume Visualization of Water Quality Data in Hamilton Harbour, Lake Ontario." In Environmental Software Systems, 278–86. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-0-387-34951-0_25.

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Keller, W., J. Roger Pitblado, and N. I. Conroy. "Water Quality Improvements in the Sudbury, Ontario, Canada Area Related to Reduced Smelter Emissions." In Acidic Precipitation, 1819–28. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-3385-9_176.

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Rodgers, D. W., J. Schröder, and L. Vereecken Sheehan. "Comparison of Daphnia magna, rainbow trout and bacterial-based toxicity tests of Ontario Hydro aquatic effluents." In Clean Water: Factors that Influence Its Availability, Quality and Its Use, 105–12. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0299-2_11.

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MacIsaac, Hugh J., W. Keller, T. C. Hutchinson, and N. D. Yan. "Natural Changes in the Planktonic Rotifera of a Small Acid Lake Near Sudbury, Ontario Following Water Quality Improvements." In Acidic Precipitation, 1845–51. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-3385-9_178.

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Read, Jennifer. "Managing Water Quality in the Great Lakes Basin: Sewage Pollution Control, 1951–1960." In Ontario Since Confederation, 339–61. University of Toronto Press, 2000. http://dx.doi.org/10.3138/9781442620834-018.

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Neilson, M. A., and R. J. J. Stevens. "Determination of Water Quality Zonation in Lake Ontario Using Multivariate Techniques." In Statistical Aspects of Water Quality Monitoring, Proceedings of the Workshop held at the Canada Centre for Inland Waters, 99–116. Elsevier, 1986. http://dx.doi.org/10.1016/s0167-5648(08)70787-1.

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Benidickson, Jamie. "4. Ontario Water Quality, Public Health, and the Law, 1880–1930." In Essays in the History of Canadian Law, edited by George Blaine Baker and Jim Phillips. Toronto: University of Toronto Press, 1999. http://dx.doi.org/10.3138/9781442620797-008.

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El-Shaarawi, A. H., J. Richard Elliott, R. E. Kwiatkowski, and David R. Peirson. "Association of ChlorophyllA with Physical and Chemical Factors in Lake Ontario, 1967-1981." In Statistical Aspects of Water Quality Monitoring, Proceedings of the Workshop held at the Canada Centre for Inland Waters, 273–91. Elsevier, 1986. http://dx.doi.org/10.1016/s0167-5648(08)70799-8.

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Mitchell, Bruce. "Ecosystem Approach." In Resource and Environmental Management, 63–85. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190885816.003.0003.

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An ecosystem approach ideally focuses on determining vision, goals, and objectives in order to guide management of the interrelationships between and among relevant biophysical and socioeconomic variables for a specified ecosystem of interest. A distinction between ends and means is important, as too often in resource and environmental management the ecosystem approach is treated as an end in itself, rather than as a means to an end. Various views regarding the ecosystem approach are considered, followed by an examination of comprehensive and integrated interpretations of the ecosystem approach, and applications of the concept with reference to river basin management in Ontario, Canada, coastal management in Trinidad and Tobago, and the water–energy–food nexus. Jeff Lewis’s guest statement examines the experience in applying the ecosystem approach regarding water quality and flood damage reduction by the Red River Basin Commission in Minnesota, North Dakota, and Manitoba.
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Conference papers on the topic "Water quality – Ontario"

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"Water Quality Management in the Holland Marsh, Ontario." In 2016 ASABE International Meeting. American Society of Agricultural and Biological Engineers, 2016. http://dx.doi.org/10.13031/aim.20162456240.

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Rudra, R. P., B. Gharabaghi, S. Gebremeskel, S. Das, and H. Bai. "Hydrological and water quality modeling in the Ontario River basins: comparison of model results." In WATER POLLUTION 2006. Southampton, UK: WIT Press, 2006. http://dx.doi.org/10.2495/wp060171.

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Auger, Steve, Tim Van Seters, Amanjot Singh, and John Antoszek. "Water Quality Target Assessment Using LID TTT for Better SWM Designs in Ontario." In International Low Impact Development Conference 2018. Reston, VA: American Society of Civil Engineers, 2018. http://dx.doi.org/10.1061/9780784481783.002.

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"Impacts of Climate Change on Hydrology and Water Quality in a watershed in Ontario." In ASABE 1st Climate Change Symposium: Adaptation and Mitigation. American Society of Agricultural and Biological Engineers, 2015. http://dx.doi.org/10.13031/cc.20152123838.

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Amanjot Singh, R P Rudra, S I Ahmed, S Das, and B Gharabaghi. "Application of CANWET and HSPF for TMDL Evaluation under Southern Ontario Conditions." In Watershed Management to Meet Water Quality Standards and TMDLS (Total Maximum Daily Load) Proceedings of the 10-14 March 2007, San Antonio, Texas. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2007. http://dx.doi.org/10.13031/2013.22423.

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Samaresh Das, Ramesh P Rudra, Bahram Gharabaghi, Amanjot Singh, Syed Imran Ahmed, and Pradeep K Goel. "Evaluation of Nutrient Component of AnnAGNPS Model in a Watershed in Ontario." In Watershed Management to Meet Water Quality Standards and TMDLS (Total Maximum Daily Load) Proceedings of the 10-14 March 2007, San Antonio, Texas. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2007. http://dx.doi.org/10.13031/2013.22442.

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Samaresh Das, Ramesh P Rudra, Bahram Gharabaghi, Pradeep K Goel, Amanjot Singh, and Syed Imran Ahmed. "Comparing the Performance of SWAT and AnnAGNPS Model in a Watershed in Ontario." In Watershed Management to Meet Water Quality Standards and TMDLS (Total Maximum Daily Load) Proceedings of the 10-14 March 2007, San Antonio, Texas. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2007. http://dx.doi.org/10.13031/2013.22481.

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Buszynski, Mario E. "Environmental Mitigation Associated With the Installation of a Natural Gas Pipeline in the Vicinity of an Artesian Well." In 2002 4th International Pipeline Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/ipc2002-27136.

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In the fall of 2001, Enbridge Consumers Gas proposed to install a 190 mm extra-high pressure steel pipeline in proximity to an artesian well on the Oak Ridges Moraine in southern Ontario. This well is located within the Regional Municipality of Durham and it is used by over 300 persons per day as their drinking water source because of very high water quality. Potential impacts to drinking water quality have taken on greater importance because of the Walkerton tragedy, in which a number of people died from drinking contaminated municipal water. The Region of Durham was especially concerned because of the large number of people who use this artesian well as their drinking water source. The Region did not want to close the well during construction as this could be taken as an admission that construction might negatively impact water quality. At the same time, they wanted to ensure that water quantity and quality was maintained. SENES Consultants Limited (“SENES”) was retained to develop and implement an environmental management plan to ensure that no negative impacts would occur during construction. The plan involved characterization of the water-bearing zone in terms of depth, type of deposit and direction of flow, relative to the drinking water source. This was undertaken through the use of test pits, boreholes and piezometers. Potential construction impacts were identified. In this case, the natural gas pipeline was to be installed by a directional drill that injects bentonite (drilling mud) to provide lubrication and to keep the drill hole from collapsing. Mitigation measures related to containment of bentonite and fuel handling in the vicinity of the artesian well were prescribed. The rationale for directional drilling this section of the pipeline was to prevent erosion of the steep slopes and to undercross a watercourse. The water-bearing deposit consisted of a sandy-gravel layer that was found to occur at a depth of 3.65 meters. Every effort was made to maintain the drill hole for the pipeline above this depth. In addition to sampling the artesian well for chemical and bacterial parameters in advance of construction and upon completion of work in the vicinity, water from the artesian well and one of the piezometers was checked for turbidity every two hours. Other contingency plans included digging “burp-holes” to reduce the potential for bentonite frac-outs and having a water supply truck on stand-by should turbidity levels reach unacceptable levels. Construction proceeded smoothly. Minor frac-outs occurred and were appropriately contained. The turbidity readings and water quality samples taken before, during and post-construction confirmed that there were no negative impacts on the artesian well. The methods used on this project are directly applicable to other pipelines that may be constructed in the vicinity of artesian wells.
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Manning, B. W., T. Stevens, G. Morandin, R. G. Sauve´, R. Richards, S. Mantro, and J. Czajkowski. "Piping System Structural Integrity Simulation for Post LOCA Water Hammer Loads." In ASME 2002 Pressure Vessels and Piping Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/pvp2002-1292.

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The Canadian Nuclear Safety Commission (CNSC) required as part of the operating license for Ontario Power Generation’s Darlington Nuclear Generating Station, that the structural integrity of the piping following a loss of coolant accident (LOCA) be demonstrated. This is necessary to ensure that no subsequent pressure boundary failures will impede the ability to maintain fuel cooling. The injection of cold emergency coolant following a LOCA creates the potential for the occurrence of condensation-induced water hammers (CIWH) in the primary heat transport (PHT) system piping. Classical linear elastic piping analysis using the class 1 NB-3656 rules of the ASME Boiler & Pressure Vessel Code failed to demonstrate the adequacy of the piping and/or its supports that were designed using the linear elastic rules of subsection NF for nine of the twelve piping models that comprise the PHT system. A decision was made to undertake a state-of-the-art non-linear explicit analysis in order to qualify the piping. Strain rather than stress limits would be applied similar to those being developed by ASME for nuclear packaging undergoing accidental impact during transportation. In order to address the feasibility of this approach, a non-linear analysis was performed on a portion of one of the piping systems. The piping was modeled as shells and again as beam elements with and without detailed modeling of the supports. After these initial simulations, it was determined that the piping could be modeled with simplified beam elements, however, the supports would require a more detailed modeling in order to determine the extent of support damage and the effect the supports have on the integrity of the piping system itself. This paper addresses the non-linear modeling of the piping models and discusses the modeling details, assumptions and analysis results. This approach is shown to be a useful alternative for predicting the extent of structural damage that can be expected by a Level D event such as a condensation induced water hammer following a loss of coolant accident.
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Reports on the topic "Water quality – Ontario"

1

Kenny, F. M., G. Hunter, and P. Chan. Georeferencing quality control of Ontario's water well data base for the greater Toronto and Oak Ridges Moraine areas of southern Ontario. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1997. http://dx.doi.org/10.4095/216738.

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2

Hamilton, S. High-density, high quality regional sampling of water supply wells: Ontario's ambient groundwater geochemical program. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2016. http://dx.doi.org/10.4095/297730.

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