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TABLE 3 <br />NOAA WEATHER STATIONS <br />NOT USED IN THE USBR?S <br />1981-85 CONSUMPTIVE USES AND LOSSES REPORT <br />(GUNNISON RIVER BASIN) <br />HYDROLOGIC WEATHER DATA YEARS OF <br />UNITCOUNTY STATIONELEVATION AVAILABLE RECORD <br />14020001GunnisonTaylor Park9206Max. & Min. 1949 -> <br />Temp., Prcp. Present <br />14020002GunnisonBlue Mesa Lake7640Max. & Min. 1971 -> <br />Temp., Prcp. Present <br />14020002GunnisonPowderhornMax. & Min. 1965 - 70 <br />Temp., Prcp. <br />14020003GunnisonPitkin9241Max. & Min. 1964 - 83 <br />Temp., Prcp. <br />14020003Gunnison Sargents8471Prcp.1960 - 93 <br />14020005MesaGrand Junction 6 4760Max. & Min. 1964 -> <br />ESE Temp., Prcp. Present <br />14020006OurayOuray7840Max. & Min. 1951 -> <br />Temp., Prcp. Present <br /> <br />Review of a map provided by Colorado State University's IDS Group. The map shows the <br />? <br />locations of the weather stations and the irrigated areas in the Gunnison River basin. <br /> <br />Review of U.S. Geological Survey (USGS) topographic maps. <br />? <br />It is assumed in this report that if the elevation of the irrigated area is different than the elevation of the <br />weather station, the temperatures used to calculate consumptive use will be adjusted using appropriate <br />adiabatic lapse rates. <br />3.0 CONCLUSIONS AND RECOMMENDATIONS <br />The recommended changes for each hydrologic unit and county are summarized in Table 4 and are <br />discussed in the following text. In hydrologic units and counties where more than one weather station is <br />recommended, the weighting factor for each station has been determined by the IDS Group using its <br />geographic information system (GIS) technology. <br />Hydrologic Unit 14020001, Gunnison County <br />For this unit, the USBR recommended the Crested Butte station. Three weather stations, Crested Butte, <br />Taylor Park Dam, and Gunnison, could be used to calculate consumptive use in this unit. The difference <br />in precipitation, topography of the unit, and location of the stations with respect to the irrigated area are <br />the basis for the recommended changes. Analysis of precipitation records found that for Gunnison, Taylor <br />Park, and Crested Butte, the total May through September precipitation averages 5.55, 7.82, and 8.96 <br />inches, respectively, and total annual precipitation averages 10.06, 17.12, and 22.23 inches, respectively. <br />The temperature data at the Taylor Park Dam station is not recommended because (1) it is located near the <br />base of the dam in the river canyon; and (2) April and May minimum temperatures are 8 <br />3 <br />A 275 01.09.95 1.14-18 Walter <br />