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PHYSICAL INFORMATION <br />Bob Creek Ditch originates in Water Division 1 District 48 and terminates in Water Division 1 <br />District 3 in Larimer County. <br />Construction of Bob Creek Ditch began in <br />1897. On October 17, 1898, construction of <br />the Ditch extension began and was completed <br />in 1920. The Ditch was historically used to <br />provide irrigation water to the Eastern Slope. <br />The Ditch was purchased by the City of <br />Greeley from Mountain and Plains Irrigation <br />Company in the 1930's. <br />The Ditch diversion control structure consists <br />of a wood bypass and a wood flume. Since <br />Greeley began diverting water through Bob <br />Creek Ditch in 1998, changes have been made <br />in Bob Creek Ditch to ensure adequate water <br />quality in the receiving waters of Roaring Fork <br />Creek. <br />Roaring Fork Creek, Colorado <br />Length: Approximately 1.5 miles in length. (2.7 miles including the Ditch extension.) <br />Capacity: The design capacity of Bob Creek Ditch is greater than 60.0 cfs. At the upper end, <br />Bob Creek Ditch is approximately 14 feet wide at the bottom, 3.5 feet in depth, and the <br />grade is 5 feet to the mile <br />Diversion Measurement Device: <br />DWR WDID: 0304606 and 4800573 <br />USGS ID: 06747200 and BOBGLNCO -Bob Creek Ditch near Deadman Mountain <br />near the town of Glendevey <br />Datum: 9,890 feet above sea level NGVD29 <br />Ditch Outlet: Three-foot Parshall flume equipped with Stevens recorder. Bob Creek <br />Ditch is not equipped with a satellite linked monitoring system. <br />Conveyance Efficiency: Construction material of the Ditch varies along the length of the ditch <br />and includes soil, disintegrated rock, solid rock, and wooden flume. The original decree <br />for Bob Creek Ditch (CA 5993) notes that the Ditch collects water coming into it by <br />seepage through the ground. Randy Gustafson, Water Supply Supervisor for the City of <br />Greeley, was unaware of any seepage loss studies or decreed seepage associated with <br />Bob Creek Ditch. <br />BobCreekDitch.doc 4 of 9 <br />