A Planning Tool for Stormwater Quality Management in Urbanized Areas: the City of Scarborough Case Study

1997 ◽  
Vol 32 (1) ◽  
pp. 37-52
Author(s):  
James LI ◽  
Don Weatherbe ◽  
Derek Mack-Mumford ◽  
Michael D’Andrea
Keyword(s):  
Water Quality ◽  
Quality Management ◽  
Great Lakes ◽  
Action Plan ◽  
Stormwater Quality ◽  
Management Options ◽  
Planning Strategy ◽  
Average Annual Runoff ◽  
Urbanized Areas ◽  
The City

Abstract One of the many challenges municipalities in the Great Lakes Remedial Action Plan (RAP) areas must face is the lack of a screening tool to determine stormwater quality management options in their urbanized areas. In support of the RAP process, Environment Canada, through the Great Lakes 2000 Cleanup Fund, the Ontario Ministry of Environment and Energy, and the City of Scarborough, commissioned Ryerson Polytechnic University to develop a generic planning strategy for stormwater quality management in urbanized areas. The generic planning strategy comprises five steps: (1) identification of ecosystem and economic goals and objectives; (2) identification of feasible retrofit stormwater management practices (RSWMPs); (3) formulation of alternative stormwater quality management strategies in accordance with a preferred hierarchy of RSWMPs; (4) evaluation of alternative strategies with respect to cost-effectiveness; and (5) selection of a stormwater quality management strategy. To demonstrate the application of the generic planning strategy, a stormwater quality management plan was developed for the Centennial Subwatershed (730 hectares) in the City of Scarborough, which is fully urbanized. Using the generic planning strategy, the recommended stormwater quality plan assumes (1) all the roads in poor condition will be retrofitted with stormwater exfiltration systems as they are reconstructed or rehabilitated; (2) an existing quantity pond will be retrofitted with a water quality function; (3) a new water quality pond will be constructed on a government-owned site; (4) 50% of the feasible residential areas will have downspouts disconnected; and (5) all the roads in the feasible commercial areas will be retrofitted with oil/grit separators. The average annual runoff volume reduction and solids loading reduction of this strategy were estimated to be about 9 and 30%, respectively, and the associated cost was about $1.2 million.

A storm water retrofit plan for the mimico creek watershed

1999 ◽  
Vol 39 (12) ◽  
pp. 133-140
Author(s):  
J. Y. Li ◽  
D. Banting
Keyword(s):  
Water Quality ◽  
Quality Management ◽  
Great Lakes ◽  
Management Practices ◽  
Water Quality Management ◽  
Storm Water ◽  
Planning Tool ◽  
Creek Watershed ◽  
Urbanized Areas ◽  
Goals And Objectives

Storm water quality management in urbanized areas remains a challenge to Canadian municipalities as the funding and planning mechanisms are not well defined. In order to provide assistance to urbanized municipalities in the Great Lakes areas, the Great Lakes 2000 Cleanup Fund and the Ontario Ministry of the Environment commissioned the authors to develop a Geographic Information System planning tool for storm water quality management in urbanized areas. The planning tool comprises five steps: (1) definition of storm water retrofit goals and objectives; (2) identification of appropriate retrofit storm water management practices; (3) formulation of storm water retrofit strategies; (4) evaluation of strategies with respect to retrofit goals and objectives; and (5) selection of storm water retrofit strategies. A case study of the fully urbanized Mimico Creek wateshed in the City of Toronto is used to demonstrate the application of the planning tool.

Contaminated Sediment Management: the Canadian Experience

2001 ◽  
Vol 36 (3) ◽  
pp. 395-411 ◽  
Author(s):  
Roger Santiago ◽  
Jean-Pierre Pelletier
Keyword(s):  
United States ◽  
Water Quality ◽  
Great Lakes ◽  
Management Practices ◽  
Action Plan ◽  
The United States ◽  
Pilot Scale ◽  
Sediment Management ◽  
Contaminated Sediment ◽  
Areas Of Concern

Abstract Since the beginning of North America's industrialization, the Great Lakes have been negatively impacted by the discharge of industrial, agricultural and municipal pollutants. The governments of Canada and the United States have recognized that the accumulation of pollutants within the bottom sediment and the water column has had a detrimental effect on the Great Lakes ecosystem. In 1972, Canada and the United States signed the Great Lakes Water Quality Agreement, which established common water quality objectives and commitments to programs and other measures to achieve these objectives. This included measures for the abatement and control of pollution from dredging activities. By 1985, the International Joint Commission, a body established by the two countries to provide advice on boundary water issues, identified 43 Areas of Concern where impaired water quality prevented full beneficial use of rivers, bays, harbours and ports. The Great Lakes Water Quality Agreement, amended in 1987, committed both countries to concentrate remediation efforts in these 43 Areas of Concern. This led to the development of Remedial Action Plans to assess and remediate contamination problems. Contaminated sediment was identified in all of these Areas of Concern. In 1989, the Canadian government created the 5-year $125-million Great Lakes Action Plan in support of the Great Lakes Water Quality Agreement. Of this, $55 million was allocated to the Great Lakes 2000 Cleanup Fund for the 17 Canadian Areas of Concern. A portion of the Cleanup Fund was designated for the development and demonstration of technologies for assessment, removal and treatment of contaminated sediment. Since its creation, the Remediation Technologies Program, established under the Cleanup Fund, has successfully performed 3 full-scale remediation projects, 11 pilot-scale technology demonstrations and 29 bench-scale tests. In addition to these projects, the program also evaluated existing sediment management practices and processes.

Water Quality Management Options for a Downstream Transboundary River Basin - The Sajó River Case Study

1999 ◽  
Vol 40 (10) ◽  
pp. 95-102
Author(s):  
János Fehér ◽  
István Galambos ◽  
Zsuzsa Lehoczki
Keyword(s):  
Water Quality ◽  
Quality Management ◽  
River Basin ◽  
Groundwater Resources ◽  
Water Quality Management ◽  
Cost Effective ◽  
Management Options ◽  
Transboundary River Basin ◽  
The Cost

Water quality management has been a priority in Hungary in the past decades. Focus was especially upon improving water supply and stimulating economic development. On 1st January 1996 new Law on General Regulations for Environmental Protection (No. 53/1995) and the Act on Water Management (No. 57/1995) came into force. These laws are framework laws providing objectives to the development of the legal instrumentation of environmental and water protection. These new regulations should reflect the transitional nature of Hungary and should stimulate and facilitate the use of the most cost-effective and efficient forms of water quality management. Furthermore the regulations should aim at harmonization with EC directives. To support the elaboration of the new regulations case studies were carried out in the frame of a EU PHARE financed project to give answers to several water quality management and economic questions, such as (a) the way in which water quality objectives can be set when dealing with transboundary loads and vulnerable groundwater resources; (b) how to address industries in sanitation; (c) how to formulate collection and treatment requirements in the case of a very sensitive surface water originating in a river basin with predominantly non-vulnerable groundwater resources; (d) the cost effective sanitation strategy; (e) the determination of permissible loads by using water quality models; and (f) how to allocate this load among pollution sources. The paper is gives an overview of the case study with the discussion of the conclusions.

Integrated water quality management of the große dhünn reservoir

1998 ◽  
Vol 37 (2) ◽  
pp. 351-359 ◽  
Author(s):  
Wilfried Scharf
Keyword(s):  
Water Quality ◽  
Quality Management ◽  
Lake Trout ◽  
Water Quality Management ◽  
Point Sources ◽  
Water Volume ◽  
Management Options ◽  
Ample Evidence ◽  
Green Algal ◽  
Reservoir Basin

In this paper I introduce protection measures and management options which are applied to the watershed as well as to the reservoir itself and later their impact on water quality is discussed. Emphasis is given to nutrients from non-point sources and nutrient removal from such sources by pre-reservoirs is considered in detail. Phosphorus removal has to work mainly during flood events, when most of the nutrient load enters the reservoir. As our results reveal, 55% of the total annual TP-input can be removed in pre-reservoirs. I also introduce our concept of fishery management, which involves stocking the reservoir with lake trout (Salmo trutta lacustris) and pike perch (Stizostedion lucioperca). The advantage of having lake internal management options available, i.e. selective take-off from raw waters, is also considered in the case of development of metalimnetic blue-green algal (Planktothrix) populations. Preparatory measures i.e. cleaning of the reservoir basin, which has to be done before the rivers are impounded, are discussed. “Trophic upsurge”, in the sense of nutrient leaching, was not important during the first filling years. Improvements in water quality during the “ageing process” are due to lake internal mechanisms, i.e. the increase of sedimentation capacity and decrease of the ratio of epi- to hypolimnetic water volume, which were supplemented later by sewage diversion. Our results present ample evidence that it is due to our philosophy of integrated water quality management that Große Dhünn Reservoir is oligotrophic today - always able to fulfil its purposes.

scholarly journals EVALUATION OF THE QUALITY OF MANANTIAL WATER SUPPLYING THE CITY OF SALVADOR (BA)

2017 ◽  
Vol 14 (28) ◽  
pp. 23-29
Author(s):  
Helena Maria Andrade ALVES ◽  
Cristina Yassuko YAMANAKA ◽  
Miguel Angel Lobo AZCONA ◽  
Valter Alexandre BRASIL ◽  
Rui Jesus Lorenzo GARCIA ◽  
...  
Keyword(s):  
Water Quality ◽  
Population Density ◽  
Riparian Vegetation ◽  
Quality Index ◽  
Metropolitan Region ◽  
Important Indicator ◽  
Urbanized Areas ◽  
The Relationship ◽  
The City

Since 2011, the Centro de Pesquisas e Desenvolvimento - CEPED performs sampling and analysis activities of the waters of the springs that supply the city of Salvador to assess the Water Quality Index (WQI). The WQI is an important indicator of the relationship between use and land cover and water quality in a watershed. The purpose of this paper is to present a study of water quality of rivers Paraguaçu, Joanes, Jacuípe, Ipitanga, which are responsible for the water supply for the population of metropolitan region of Salvador with more than three million inhabitants and highest population density Northeast North. Through this study we can conclude that there is a decrease in water quality in nearby points of urbanized areas due to lack of sanitation, as well as in areas where there is impairment of riparian vegetation cover.

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