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<br />Stream <br /> <br />Stream <br />Miles <br /> <br />Stream <br /> <br />Stream <br />Miles <br /> <br />Piney Creek <br />Section 34 <br />Tributary <br />Sellers Gulch <br />South Newlin Gulch <br />Spring Gulch <br />Stark Creek <br />Tributary A <br /> <br />2.4 <br /> <br />Tributary B <br />Tributary C <br />Tributary D <br />6400 Tributary, <br />East & West Forks <br />6400 South <br />Tributary <br />West Plum Creek <br />Willow Gulch <br /> <br />1.0 <br />0.6 <br />3.0 <br /> <br />1.3 <br />3.6 <br />1.1 <br />5.0 <br />4.0 <br />1.3 <br /> <br />5.1 <br /> <br />2.4 <br />15.5 <br />2.0 <br /> <br />Small portions of the upstream reaches of Cottonwood Creek and Dad <br />Clark Gulch, although studied by approximate methods, are not <br />shown on the Flood Insurance Rate Map (FIRM) because the flooding <br />is less than 200 feet wide. <br /> <br />Approximate analyses were used to study those areas having a low <br />development potential or minimal flood hazards. The scope and <br />methods of study were proposed to, and agreed upon by. FEMA and <br />Douglas County. <br /> <br />2.2 Community Description <br /> <br />Douglas County is located slightly northeast of the geographic <br />center of Colorado, south of the City of Denver and Denver County. <br />The county seat is the Town of Castle Rock, located approximately <br />30 miles south of DenVer. The 1980 population of Castle Rock was <br />3,921 (Reference 1). The 1984 estimated population was just over <br />6,000. The 1980 population of Douglas County was 25,153 (Refer- <br />ence 1). The 1985 estimated population was 38,150. Other commun- <br />ities within the county are Deckers, Westcreek. Louviers, Sedalia, <br />Parker, Franktown, Larkspur. and Greenland. These are small com- <br />munities, the largest being Parker with a 1980 population of <br />11,234 (Reference 1). Douglas County is bordered on the north by <br />Arapahoe County, on the west by Jefferson County, on the south by <br />Teller and El Paso Counties and on the east by Elbert County. <br /> <br />Castle Rock and the northern portion of Douglas County have devel- <br />oped as residential areas. Business and industrial activities in <br />Denver support much of Castle Rock's working population. The re- <br />sult has been extensive growth, with a loss of agricultural land <br />use. MOst agriculture in the Castle Rock area is centered around <br />livestock production; the remainder, approximately 15 percent, is <br />cultivation. <br /> <br />Until a few years ago, development was limited to the communities <br />cited earlier. The growth of Denver is affecting northern Douglas <br /> <br />5 <br />