Agenda - Council - 07/28/2015 - Laserfiche WebLink

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Projected water use The following should be addressed as water plans are updated: • Potential for water use conflicts and well interference - Due to the pervasiveness of private wells in the metro area, there exists a potential water use conflict and well interference of all appropriators • Potential for impacts of groundwater pumping on surface water features and ecosystems - Surface waters in the community may be directly connected to regional groundwater system • Significant vulnerability to contamination - A vulnerable Drinking Water Supply Management Area has been designated within the community - Travel time from land surface to bedrock aquifers is estimated to be less than 50 years • Significant uncertainty about aquifer productivity and extent - Parts of the community may not be represented by a Minnesota Department of Health aqui- fer test - Parts of the community may not be represented by a Minnesota Department of Natural Re- sources observation well The Metropolitan Council's Local Planning Handbook contains interactive maps of all of these issues, and they are also summarized in Chapter 5 of this Master Water Supply Plan. The following actions are recommended: • Acknowledge the issues above in local water suppy plans and water appropriation permit applica- tions, including a plan to monitor. • Explore and support water demand (water conservation) programs such as incentives, ordinances, education and outreach, rates and other approaches. The Metropoliatn Council Water Conserva- tion Toolbox can support these efforts. • Before requesting water appropriations, water users in this areas should evaluate the need to ad- dress water conflict and well interference including a) an inventory of all active domestic and public water supply wells near proposed well locations and b) an anlysis of existing water level/water withdraw) data to identify where future drawdowns could affect domestic wells. • Due to the risk of impacting surface waters by groundwater pumping, consult with DNR to review existing information about groundwater withdrawals, water level, surface water flow, climate, and projected withdrawals and wells to predict the likelihood of a connection between aquifer with- drawals and surface water features. If a connection is likely, a management plan should be WATER SUPPLY MASTER WATER SUPPLY PROFILES PLAN- Draft June 2015 2020 2030 2040 Population Served 19,100 19,600 20,100 Total Population 19,100 19,600 20,100 Projected Average Daily Water Use (Million Gal/Day) 2.8 2.9 3.0 Total Per Capita Water Use (Gal/Person/Day) 146.60 147.96 149.25 Total Per Capita Water Use, Assuming Total Water Use Remains at 2011 Levels 129 126 122 The following should be addressed as water plans are updated: • Potential for water use conflicts and well interference - Due to the pervasiveness of private wells in the metro area, there exists a potential water use conflict and well interference of all appropriators • Potential for impacts of groundwater pumping on surface water features and ecosystems - Surface waters in the community may be directly connected to regional groundwater system • Significant vulnerability to contamination - A vulnerable Drinking Water Supply Management Area has been designated within the community - Travel time from land surface to bedrock aquifers is estimated to be less than 50 years • Significant uncertainty about aquifer productivity and extent - Parts of the community may not be represented by a Minnesota Department of Health aqui- fer test - Parts of the community may not be represented by a Minnesota Department of Natural Re- sources observation well The Metropolitan Council's Local Planning Handbook contains interactive maps of all of these issues, and they are also summarized in Chapter 5 of this Master Water Supply Plan. The following actions are recommended: • Acknowledge the issues above in local water suppy plans and water appropriation permit applica- tions, including a plan to monitor. • Explore and support water demand (water conservation) programs such as incentives, ordinances, education and outreach, rates and other approaches. The Metropoliatn Council Water Conserva- tion Toolbox can support these efforts. • Before requesting water appropriations, water users in this areas should evaluate the need to ad- dress water conflict and well interference including a) an inventory of all active domestic and public water supply wells near proposed well locations and b) an anlysis of existing water level/water withdraw) data to identify where future drawdowns could affect domestic wells. • Due to the risk of impacting surface waters by groundwater pumping, consult with DNR to review existing information about groundwater withdrawals, water level, surface water flow, climate, and projected withdrawals and wells to predict the likelihood of a connection between aquifer with- drawals and surface water features. If a connection is likely, a management plan should be WATER SUPPLY MASTER WATER SUPPLY PROFILES PLAN- Draft June 2015