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Gulch, whose 1.48-square-mile drainage area covers the foothills and valley area west of North Table Mountain. The drainage areas in the upper portions of these stream basins have steep slopes and cover complexes that vary from forested areas to rangeland with rock outcroppings. West Fork Kenneys Run and its tributaries drain a 3.43-square-mile basin that starts on the eastern face of Lookout Mountain and extends across the plains southwest of Golden. East Fork Kenneys Run drains a 1.78-square-mile basin that starts on the western face of South Table Mountain and extends across the plains southeast of Golden. The upper portions of both these basins have steep slopes and rugged terrain. The plains portion of the West Fork Kenneys Run basin is primarily hilly rangeland, with heavy urban development beginning north of 24th Street. The plains portion of the East Fork Kenneys Run basin has the same hilly topography as the West Fork Kenneys Run basin; but, overall, it has been more heavily developed. The forks join at 20th Street to form Kenneys Run, which flows northeasterly through a buried 8-foot diameter corrugated metal pipe culvert to its confluence with Clear Creek. The intervening I-square-mile basin between the confluence of East and West Forks Kenneys Run and the mouth of Kenneys Run is a heavily urbanized area lying in the valley between Lookout and South Table Mountains. The floodplain areas for the entire length of Kenneys Run and the low portions afEast and West Forks Kenneys Run have been densely developed. Lena Gulch has its source on Lookout Mountain and flows northeasterly, where it joins Clear Creek in Wheat Ridge. Apex and Jackson Gulches drain the foothill area south of Lookout Mountain before joining below Heritage Square at the base of the foothills to fonn Lena Gulch. Lena Gulch then flows parallel to the north side of U.S. Highway 40 through the City of Golden. This reach also receives runoff from the northwestern slope of Green Mountain. The total drainage area of Lena Gulch affecting Golden is 3.68 square miles and is characterized by steep slopes, bedrock outcrops, some forested areas in the foothills, and by heavily developed floodplain areas in Golden. At several locations along Lena Gulch, the natural channel has been diverted and partially filled. The City of Arvada is located on the east slope of the Rocky Mountains, about 6 miles northwest of the State Capitol building in Denver. The estimated population of Arvada in 1998 was 97,610 (Reference 26). The majority of the streams that were studied within Arvada flow through somewhat dense residential and commercial areas. All of the study streams have their source of flow in the Rocky Flats area and eastern foothills of the Rocky Mountains. Ralston Creek is tributary to both the Ralston and Arvada Reservoirs and Leyden Creek is tributary to the Leyden Reservoir. Little Dry Creek flows through, or is adjacent to, both Lake Arbor and the Pomona Lakes, which are recreational facilities owned and maintained by the City of Arvada. The total basin area draining the study streams is approximately 104 square miles. The elevations within the drainage basins for the streams range from over 10,000 feet in the upper portion of the Ralston Creek basin to 5,250 feet at the confluence of Ralston Creek and Clear Creek. For the most part, the study streams have a relatively small base flow for most of the year. The City of Edgewater is located on gently rolling land in eastern Jefferson County and is bordered by the City of Wheat Ridge to the north, the City of Lakewood to the west and 11