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CRDSS <br />TASK MEMORANDUM 2.09-10 <br />Consumptive Use Model <br />Non-Irrigation (Other Uses) Consumptive Uses and Losses <br />in the Upper Colorado River Basin <br />1.0 ISSUE <br />This task memorandum formalizes the computati on of non-irrigation categories such as livestock, <br />stockpond, municipal, thermal electric, mineral res ource, export, fish and wildlife, and recreation <br />categories for the CRDSS consumptive use (CU) in the Upper Colorado River Basin for calendar <br />years 1985 to 1990. These categories are the same as those included in the USBR Colorado River <br />System Consumptive Uses and Losses Report (USBR, 1991) produced every five years. <br />2.0 DISCUSSION/ANALYSIS <br />The estimation of the non-irrigation consumptive uses and losses from the entire Colorado Main <br />Stem can be performed either by county (Eagle , Garfield, Grand, Mesa, Pitkin, Routt, and Summit) <br />or by hydrologic unit HUC (14010001, 14010002, 14010003, 14010004, 14010005 and 14010006). <br />The US Bureau of Reclamation (USBR) used the intersection of counties and Hydrologic Units as <br />the subdivisions for the crop consumptive use in its Colorado River System Consumptive Uses and <br />Losses Report, 1981-1985 (USBR, 1991), but for some of the other uses (e.g. thermoelectric, <br />mineral) they used either county or HUC depending on the available data. <br />To preserve consistency with these published reports and the units of the source data, other use data <br />are reported in Hydrologic Units , County (calculated),or the inte rsection of County and Hydrologic <br />Unit. <br />2.1 Livestock <br />As in (USBR, 1991) three types of livestock are included: cattle, sheep and hogs. Table 1 shows the <br />average daily water consumption of each livestock type. <br />For the years 1985 to the present, the County Agri cultural Statistics (CAS) no longer reports the <br />number of livestock by county, instead it recorded this information for the entire state of Colorado. <br />Therefore, the US Census of agriculture was used. <br />This census is conducted every five years. The census data for 1982, 1987, and 1992 were used, <br />these data can be obtained from the US Census world wide web page at <br />http://sasquatch.kerr.orst.edu/ag-stateis.html. <br />Using linear interpolation, values for the years 1985-1990 were calculated. The calculated numbers <br />for each county were distributed by sub-basin ba sed on the area (obtained from GIS) of each county <br />contained in the Upper Colorado River Basin (Eagle 100%, Garfield 85% , Grand 100%, Mesa 54%, <br />Pitkin 100%, Routt 11%, and Summit 100%). <br />Table 2 shows the number of livestock type by county, and Table 3 shows a summary of the <br />estimated consumptive use for 1985-1990. <br />1 <br />01.21.97 2.09-10 IDS/CSU <br />