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2 inches thick, is dark-gray, gravelly sandy loam. The subsurface 1ayer is light brownish-gray, gravelly sandy loam. The Fern Cliff Series is loamy mdxed alluvium on short fans aDd valley side slopes in the mountain area in the same elevations range. The top layer of this series is light-gray I stony sandy loam. The barren areas are predominantly exposed bedrock that consist of mdxed materials, including granite, sandstone, shale, and limestone. The dominant land cover species is Ponderosa pine; above an elevation of 8,000 feet, there are some Douglas fir and lodgepole pines. Little James Creek flows into town from the north, through mostly vacant land. Existing development in Jamestown is located on both sides of James Creek, fram the confluence with Little James Creek at Ward Street to 13th Street. Land use is primarily residential, single-family hames, with same business and commercial uses. The City of Lafayette is located in southeastern Boulder County, approximately 20 miles north of Denver. The population of Lafayette was 3,498 (Reference 15) in 1970, and was estimated to be 7,000 in 1978. Nearby communities include the following: Louisville, 2 miles west; Boulder, 11 miles west; Superior, approxtmately 6 Bdles southwest; and Broomfield, 7 miles south. Lafayette is surrounded by unincorporated land of Boulder County. The Coal Creek and Rock Creek watersheds drain approximately 79 square Bdles, most of which is located in southeastern Boulder County. Coal Creek flows northeasterly, joining Boulder creek in east-central Boulder County. Boulder Creek flows into St Vrain Creek, a major tributary to the South Platte River. These drainages are in the South Platte subregion of the Missouri River Water Resources Region, as designated by the u.s. Water Resources Council. Rock Creek is a tributary to Coal Creek, joining it just east of Lafayette. Coal Creek and Rock Creek flow through primarily agricultural land. In the southwestern part of the city, the land occupied by Coal Creek is zoned open agricultural, with primarily residential land uses and zoning adjacent to it. Where it cross the southeastern part of the city, zoning is open agricultural and industrial. Rock Creek enters the southeast part of the city just east of the Burlington Northern Railroad and flows through open agricultural-zoned land. The upstream drainage area originates in the foothills east of the Rocky Mountains, and the geology is characterized by a series of folded and faulted sedimentary strata. por the most part, the strata are classified as Fox Bills Sandstone and Laramie fo~tion. Soils are shallow, very gravelly, and stony, and in the rock outcrop-JUget-Baller association. Ground cover consists of native grasses and woodland. Except for a narrow fringe of Rocky Mountain juniper, ponderosa pine makes up the bulk of the woodland cover. The woodlands are very pictures~e, and most of the area is used for grazing and homesites, with both year-around aDd summer hamss. Average annual precipitation is approximately 18.5 inches and the 10