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II I I . I I I I I I I I I I I I I I I ~.'" 4 " fill..., " ...... Based on Scenario C forecasts, population within the entire study area is anticipated to nearly double between 1990 and the year 2020, increasin9 by more than 1 million persons to nearly 2.2 million. More than 60 percent of this growth, or from a population of about 690,000 to 1.2 million, is projected to occur in the northern tier of the Denver Metropolitan Area (Study Area 3). The population within the boundaries of the NCWCD (Study Area 1) is projected to grow by about 320,000 persons to more than 800,000 by the year 2020. The population within Study Area 2 is projected to grow from a 1990 population of about 70,000 to a population of 140,000 by the year 2020. Water Deland Projections Projections for several alternative measures of water demand based upon Scenario C demographic forecasts were also developed. Projected measures included end use demand, average annual treatment plant production, maximum day treated water requirements and raw water requirements. For Scenario C demographic projections, average annual treated water demands are expected to increase by about 230,000 ac-ft through the year 2020 for the entire study area. More than 120,000 ac-ft of these additional demands are attributable to Study Area 3, with 90,000 ac-ft and 17,000 ac-ft of additional demands coming from Study Areas 1 and 2, respectively. Peak day treated water demands are projected to increase by 450 mgd for the entire study area over the next 30 years. An additional 140 mgd is expected to develop within Study Area I, while increases of 40 mgd and 270 mgd are projected for Study Areas 2 and 3, respectively. Raw water requirements for the entire study area are expected to increase by about 245,000. Individually, raw water requirements are expected to grow by about 95,000 ac-ft, 20,000 ac-ft, and 130,000 ac-ft for Study Areas I, 2, and 3. -9-