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I I I I I I I I I I I I I I I I I I I reach include 10th Street, 9th Street, railroad bridge (spur to Coors Porce- lain Company), State Highway #58 overpass, 7th Place, 1st Street, North Ford Street and State Highway #93. The floodplain for this reach is not widespread and has maximum widths of 200 feet to 250 feet. The stream gradient is steep with slopes exceeding 2%. at a storm sewer junction box northeast of the intersection of Jackson Street and 20th Street. The majority of the main stem reach is storm-sewered with Jackson and Ford Streets being the major overflow areas. The storm sewer includes a 96-inch CMP adjacent to Jackson Street, and a combined elliptical pipe and 6-feet by II-feet concrete flume through the Coors property. A short reach of open channel exists for a distance of 100 feet immediately downstream of 15th St reet. Development along Tucker Gulch consists of industrial, commercial and residen- tial in the area downstream of Highway #58. Above Highway #58, residential development has continued along both sides of the drainageway. With the exception of some channel ization work, which has occurred upstream of 7th Place, the Tucker Gulch floodplain has experienced no significant encroachment in the upper reaches. Deve 1 opment along Kenneys Run cons i sts of Coors offi ces, school property, banks, churches, gas stations, a Safeway store, office buildings, and other commercial establishments and residential structures. A significant flood damage potential is characteristic of this study reach. The Tucker Gulch drainageway has a total study reach length of 7,800 feet. The main stem of Kenneys Run has a total study reach length of approximately 3,600 feet. - Cressmans Gulch - - West Fork Kenneys Run - The study area for Cressmans Gulch begins at the confluence with Tucker Gulch and ends immediately upstream of Highway #93. The al ignment of Cressmans Gulch has been relocated from its historic channel to east of the abandoned railroad grade. The historic channel now ends at North Ford Street east of an existing residential subdivision. Development in the study area consists of two residential properties located east of North Ford Street, a residential subdivision named North Golden Edge Subdivision, located west of Ford Street, and industrial development upstream (west) of State Highway #93. The West Fork Kenneys Run is considered the main stem extension of Kenneys Run. The study area begins at 20th Street and ends upstream of U.S. Highway #6. Tributary No.1, a left bank tributary to the West Fork located immedia- tely downstream of U.S. Highway #6, is included as part of this study reach. Storm waters enter the downstream storm sewer system at the intersection of Jackson and 20th Streets. Major stream crossings in the reach include 23rd Street, 24th Street, a private road crossing downstream of the Tributary No.1 confl uence, and U.S. Hi ghway #6. The Welch Di tch intersects the drai nageway in this reach a short distance upstream of the Golden High School property. - Kenneys Run - The drai nageway traverses through developed resi dent i a 1 properti es between 20th Street and 24th Street. Upstream of 24th Street, the stream adjoi ns and bisects the Golden High School property. Upstream of the High School, the area is primarily undeveloped, with the exception of one residential property along Tributary No.1 downstream of Highway #6. The Cressmans Gulch drainageway has a total study reach length of 4,000 feet. The study area for Kenneys Run begins at the confluence with Clear Creek ends at the point where the stream splits to become the East and West Forks of Kenneys Run. The drainageway al i gnment traverses the Adol ph Coors property west of the main brewery buildings and facilities. This main stem reach ends The total length of this study reach is approximately 7,100 feet, which i ncl udes a 700-foot reach of Tri butary No. 1. 111- 2