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<br />1 <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />HYDROLOGY <br /> <br />I1-2 <br /> <br />Colorado as shown on Figure II-I. The mountainous western portions of the <br />basin produce heavy snowmelt runoff during late spring. On the other hand, <br />the high plains and foothills portions of the basin are more susceptible to <br />high runoff during summer thunderstorms. <br /> <br />The metropolitan Denver area is heavily developed and outlying areas are <br />sparsely developed. The mountainous areas are generally unsuited for dense <br />development and will probably remain sparsely developed. The foothill and <br />high plains areas are more likely to develop but not to the extent of the <br />existing metropolitan area. Existing development in the metropolitan area <br />consists primarily of residential and commercial areas with minimal indus- <br />trial regions. <br /> <br />The river flow hydrology at Union Avenue is strongly controlled by <br />Chatfield Reservoir. <br /> <br />I <br />I <br />I <br /> <br />RIVER CORRIDOR USES <br />The hydrology of the South Platte River is closely related to the uses of <br />the river and its floodplain area. A review of the tabulation of uses <br />shows that peak flood flows, reservoir releases, average flows, low flows, <br />water rights, return flow from lawn irrigation and other non-point dis- <br />charges, and sewage effluent are all hydrologic factors which affect the <br />flow of the South Platte River. <br /> <br /> <br />SOUTH <br />Flood control and drainage <br />Transportation of water <br />Transportation and dilution of sewage effluent <br />Mineral resource extraction <br />Industrial water supply <br /> <br />TABLE II-I <br />PLA TTE RIVER CORRIDOR USES <br />Domestic water supply <br />Cultural and 'recreation <br />Water exchanges <br />Wildlife habitat <br /> <br />Recreation <br />