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.0003~3 II. Metrooolitan Water Suoolv A. Current suoolv. Water supply in the metropolitan area is very fragmented, although the vast majority of the yield for the metropolitan area is provided by. relatively few suppliers. The area defined as the "demand area" in the Two Forks EIS included Denver plus the urbanized portions of Douglas, Jefferson, Arapahoe and Adams Counties plus the southeastern corner of Boulder County. In this area, there are 59 water suppliers. The Denver Water Department and 40 providers are current participants in the Platte and Colorado Storage Project Participation Agreement which calls for the construction of Two Forks. Denver itself sells water to about 90 distributors. Note: Providers includes both suppliers and distributors. Suppliers is an entity that brings water (yield) into the area. Distributor delivers water acquired from others to end users. A few suppliers account for most of the water brought into the metropolitan area. Suoolier Percent of Total Metro Area Yield Denver Aurora Englewood Thornton So. Adams Co. WSD 63.2% 6.8 5.3 4.7 2.3 The five largest suppliers account for 82 percent of the total yield. The twently largest account for more than 95 percent. The metropolitan area receives water from several water supplies constitute the vast majority of yield. accounts for about 14 percent of the yield; wastewater less than four percent. Another dimension of the supply issue is that yields vary from year to year making making projections of available water problematic. Safe yield is a conservative figure representing the water which would be available during a dry cycle. Thus, Denver's safe yield is 295,000 acre feet. In contrast, the Denver Water Department has an annual yield of 409,000 acre feet. The minimum and maximum yields for the DWD are 125,000 acre feet and 768,000 acre feet respectively. sources. Surface Ground water exchange provides