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Collaboration Highlight: Northwest Metro Area Water Supply System Study <br />Through the Council's water supply planning activities since 2005, a successful subregional <br />collaborative platform has been established to advance regional and local water sustainability goals. For <br />example, participation in subregional water supply work groups has increased from 20 communities in <br />2005 to more than 70 communities in 2020. <br />One project that highlights the collaborative and long-range work being done by these groups is the <br />2020 Northwest Metro Area Water Supply System Study. <br />Partners <br />Corcoran, Dayton, Ramsey, Rogers, Metropolitan Council <br />Objective <br />Understand the relative costs and implementation considerations of different approaches to a multi - <br />community water supply in the northwest metro area. <br />The study evaluates four approaches to water supply: <br />1. Multi -community surface water treatment plant <br />2. Multi -community groundwater treatment plant <br />3. Multi -community conjunctive use system (surface water augmented with groundwater) <br />4. Status quo <br />The study does not provide "shovel - <br />ready" projects for implementation. <br />Rather, the project defined by each <br />approach are at a concept -level with <br />the intent to compare relative <br />differences in costs between <br />approaches and, more importantly, to <br />explore the implementation issues <br />associated with each approach. <br />Figure 11. The 2020 Northwest Metro Area <br />Water Supply System Study includes a <br />range of information about projected <br />population water demand and other water <br />supply system components for the cities of <br />Corcoran, Dayton, Ramsey and Rogers. <br />This information is used to explore the <br />costs and implementation considerations <br />for four different water supply <br />approaches. This figure provides an <br />example of the report content. <br />9 <br />8 <br />O • 7 <br />• 6 <br />As <br />4 <br />0 <br />Rogers <br />Corcoran <br />KEY: AVERAGE DAY WATER DEMAND <br />■ 2015 • 2040 • Ultimate <br />9 <br />8 <br />c 5 <br />E 4 <br />Ramsey <br />Dayton <br />POPULATION PROJECTIONS <br />1301100 <br />-.-Roays iS MGD Max <br />room oey emwm <br />-.- <br />00.0m 0 ., <br />Ccgtorcm <br />40.000 <br />mom <br />mom <br />t00m <br />o <br />2010 2020 0030 2040 0050 2050 2000 <br />Page - 22 I METROPOLITAN COUNCIL <br />