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Backl!round ; Bosley Wash is located in an unincorporated area known as Clifton, Colorado between Grand Junction and Palisade in Mesa County. Bosley Wash originates as a natural drair.age basin on the western side of Mt. Garfield, a prominent feature of the BookcIiffmountain range on the north side of the Colorado River ... valley in Mesa County. The center of the basin is approximately three miles west of Palisade, Colorado. . The basin residents experienced serious flooding on three separate occasions during the summer of 1999 on the days of July 24, AugusrI 1, and September 13. In addition to damaging residential and commercial structures, roadways, canals, and agricultural lands, the flood events deposits tons of silt over the inundated areas which after it dries, turns into a material just like concrete which destroys lawns, and irrigated and other agricultural lands. Discussion On September 28,1999, the Grand Valley Drainage District and Mesa County conducted a public hearing for addressing the flood issues and problems on Bosley Wash. Much testimony was provided from the basin residents and landowners, CDOT, BLM, and Natural Resource Conservation Service regarding the summer 1999 flood events. Representative Matt Smith was also in attendance at the hearing and shares much of the same concerns regarding flooding throughout the Grand Valley. The participants at the hearing proposed the following mitigation measures for addressing the flood issues and problems within the Bosley Wash Basin: . Perform a hydrology study for the basin to define the expected runoff for the 5-, 10-, and 100-year flood events; . Determine the existing and recommended capacities of the washes and drainage ditches within the . basin; . Evaluate measures for conveying floodwaters through the 1-70 bridge and the Grand Canal Irrigation System; . Formulate a conveyance system at the confluence of the Stub Ditch and Bosley Wash channels; . Prepare a master drainage plan for the reduction and protection from future flood events throughout the basin; and . Develop a schedule and timetable for the implementation of a plan-of-action and make these activities available to the flood victims and landowners. On October 25, 1999, the flood problems were presented at a formal presentation before the Mesa County Board of County Commissioners. The county commissioners endorsed the staff recommendation to submit an application to the Colorado Water Conservation Board. The Board has received an application for the Bosley Wash Flood Study. The application is in compliance with the Board's Construction Fund guidelines under the flood control Provisions of the guidelines. . Flood Control and Floodplain Management -Larry Lang, Chief. Water Project Planning and Construction- Mike Serlet, Chief. Instream Flows and Water Rights Investigations-Dan Merriman, Chief- Interstate Streams Investigations-Randy Seaholm, Chief. Office of Conservation Planning-William Stanton, Chief. Personnel and Budget -Susan Maul, Chief