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<br />Municipal and Industrial Water Requirements
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<br />Generally, large urban centers, such as Denver, expand
<br />concentrically. Historically, this type of growth has occurred in
<br />the Denver metropolitan area. Visually, it can be noted that the
<br />northern portion of this concentric movement in the Denver area is
<br />not complete. Should this historical pattern of expansion continue,
<br />completing the outer periphery, large portions of Boulder, Weld, and
<br />Adams Counties would realize considerable growth in the near future.
<br />It ap!iears from the data analyzed thus far that the northern portion
<br />of the circle is being completed. There are, however, certain barriers
<br />which will prevent the Denver area from expanding much further
<br />concentrically. The main barrier is the foothills lying west of the
<br />area. This barrier will undoubtedly force population growth into the
<br />other three directions. However, the Rocky Mountain Arsenal is also
<br />a barrier to the east which will set certain limits for population
<br />expansion in that direction. Ultimate expansion probably will be
<br />toward the north and south~
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<br />The population projections made by the Inter-County Regional
<br />Planning Commission and conclusions reached in this analysis concerning;:
<br />future population growth in the St. Vrain Creek basin should be .
<br />adequate for reconnaissance estimates. Recently, however, a more
<br />intensive population study associated with the Comprehensive Framework "
<br />Study of the Missouri River Basin, Platte Subregion, has been made fo~
<br />the 5-county Denver Standard Metropolitan Statistical Area. :tn that
<br />analysis, the projected population for the Denver SMSA was 1,810,000
<br />for 1980, 3,059,000 for 2000, and 5,015,000 for 2020. These projec-
<br />tions are somewhat in excess of those made by the Inter-County Regional
<br />Planning Commission, but they do not invalidate the projections for
<br />Boulder C01lllllty for 1980 and 2000 shown in table 12,
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<br />DETERMINATION OF M&I WATER REQutREMENTS
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<br />Future municipal and industrial water supplies will be composed :;
<br />of , the existing supplies plus those obtained from new sources. Estimatin~
<br />the demand that will be placed on new supplies is complicated by the fac~
<br />that the historic yield from existing water rights will not remain the
<br />same under future demand conditions. Also, per capita requirements at "
<br />least in the short run, are influenced by the economic cost of water.
<br />Long-term trends, however, show an increase in per capita requirements
<br />which is brought about by higher standards of living, improved sani taw
<br />facilities, and greater industrial activity. To simplify the .determina-
<br />tion of future municipal and industrial water requirements, it was
<br />assumed that future increases in per capita requirements by the existing'
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