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

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This value represents more than water used by residents in their homes; it also includes commercial, industrial, irrigation, and residential use. This value should not be used to compare communities against one another, because it is strongly shaped by community differences in the composition of commercial, industrial and residential users. 2020, 2030, and 2040 total per capita water use was projected using the method described in Appendix 2 of the Master Water Supply Plan. Total Per Capita Water Use, Assuming Total Water Use Remains at 2011 [OR MOST RECENT] Levels Total per capita water use, assuming total water use remains at 2011 levels, illustrates how much water demand may have to be reduced, on a per person basis, to supply the community's future population with the same amount of water. 2011 total per capita water use, assuming total water use remains at 2011 levels, equals 2011 data reported by communities to the MN Department of Natural Resources through the water appropriation permit program. 2020, 2030, and 2040 total per capita water use, assuming total water use remains at 2011 levels, was determined by dividing 2011 total water use by the 2020, 2030, and 2040 population served (see description above). The following will need to be addressed as water plans are updated The issues identified here are generally based on regional information and can be refined for more local, site specific characteristics to better evaluate vulnerability. Local water supply plans, permit requests, and environmental review documents should acknowledge potential issues and discuss actions to explore them further using more local information. Regional information used to identify potential water supply issues came from several sources. The criteria and data sources used to identify each potential issue are described here: Potential for water use conflicts and well interference Due to the pervasiveness of private wells, the potential for well interference has been identified as a potential water supply issue throughout the region. Potential for significant decline in aquifer water levels • DNR reports a declining trend in annual minimum water levels at an observation well within 1.5 miles of the area of interest. Trend information was taken from the 2014 Clean Water Fund Performance Report. • Regional groundwater flow modeling of the likely range of 2040 water demand, assuming currently planned sources are used, suggests that available head will drop by more than 50% over at least 60 acres (250,000 m2) in one or more aquifers. Details about the Metropolitan Council's water demand projection process can be found in Appendix 2; details about the modeling process can be found in Appendix 3. Potential for impacts of groundwater pumping on surface water features and ecosystems • A trout stream is located within 5 miles of the community, based on mapping published by MN Department of Natural Resources (cite GIS dataset name) • A fen is located within 5 miles of the community, based on mapping published by MN Department of Natural Resources (cite GIS dataset name) • A spring is located within 1.5 miles of a community, based on mapping published by MN Department of Natural Resources (cite GIS dataset name) WATER SUPPLY PROFILES WATER SUPPLY MASTER PLAN- Draft June 2015