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PHYSICAL INFORMATION <br />Wilson Supply Ditch originates in Water Division 1 District 76 and termin ates in Water Division <br />1 District 3 in Larimer County. <br />Construction of Wilson Supply Ditch began in 1899. In 1902, water diversions were first <br />recorded. The earth-lined Ditch was historically used to provide irrigation water to the Eastern <br />Slope. <br />Length: <br /> Unknown <br />Capacity: <br />At least 156.0 cfs. (156.0 cfs was the maxi mum daily diversion recorded on June 10, <br />1965). <br />Diversion Measurement Device: <br />Ditch Outlet <br />DWR WDID: 0304604 <br />USGS ID: 06750500 - Wilson Supply Ditch near Eaton Reservoir <br />Datum: 8,930 feet above sea level NGVD29 <br />Conveyance Efficiency: <br />The Ditch is earth lined. <br />HydroBase Data: <br />Diversions are reported as continuously monitored st reamflow records and as <br />administrative records by Colorado DWR. C ontinuously monitored streamflow data for <br />Station 06750500 are available for daily and monthly diversions from prior to 1950 <br />through water year 2002. Administrative da ta for Structure 7600600 are available for <br />daily and monthly diversions from 1999 th rough water year 2002. Both continuously <br />monitored streamflow records and administra tive diversion records are available through <br />Colorado DWR HydroBase. In addition, George Varra, Water Commissioner for <br />Division 3, also keeps monthly diversi on records for Wilson Supply Ditch in a <br />spreadsheet with other transbasin diversion records. <br />Available diversion data for Wilson Supply D itch was reviewed and compared to identify <br />the best available data source (shown in Figure 2). Monthly di versions for Wilson <br />Supply Ditch are presented in Table 2. The preferred set of data identified for Wilson <br />Supply Ditch was the continuously mon itored data for Station 06750500. When <br />compared to the other available inform ation sources, the data at Station 06750500 <br />displayed the following characteristics: <br />The longest period of record, <br />The most complete set of data prior to and throughout the period of study, <br />Corresponding monthly and daily dive rsion data available, and <br />Continues to be operated as a re cording device through present. <br />WilsonSupplyDitch.doc 4 of 8 <br />