| Abstract: | Evaporation losses from seven reservoirs operated by the Denver Water Department in central Colorado were determined during various periods from 1974 to 1980. The reservoirs studies were Ralston, Cheesman, Antero, Williams Fork, Elevenmile Canyon, Dillon, and Gross. Energy-budget and mass-transfer methods were used to determine evaporation. Class-A pan data also were collected at each reservoir. The energy-budget method was the most accurate of the methods used to determine evaporation. At Ralston, Cheesman, Antero, and Williams Fork Reservoirs the energy-budget method was used to calibrate the mass-transfer coefficients. Calibrated coefficients already were available for Elevenmile Canyon, Dillon, and Gross Reservoirs. Using the calibrated coefficients, long-term mass-transfer evaporation rates were determined. Annual evaporation values were not determined because the instrumentation was not operated for the entire open-water season. Class-A pan data were used to determine pan coefficients for each season at each reservoir. The coefficients varied from season to season and between reservoirs, and the seasonal values ranged from 0.29 to 1.05. (USGS) |
| Genre: | USGS Numbered Series |
| ProdID: | 29865 |
| Citation Author: | Spahr, N. E.; Ruddy, B. C. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | viii, 232 p. :ill., map ;28 cm. |
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| Citation Publisher: | U.S. Geological Survey, |
| Citation Series: | Water-Resources Investigations Report |
| Citation Series Code: | WRI |
| Citation Series Number: | 83-4103 |
| Citation Search Results Text: | Reservoir evaporation in central Colorado; 1983; WRI; 83-4103; Spahr, N. E.; Ruddy, B. C. |
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| Citation Year: | 1983 |
| Type: | citation/reference |
| Text: | Reservoir evaporation in central Colorado; 1983; WRI; 83-4103; Spahr, N. E.; Ruddy, B. C. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/wri/1983/4103/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/wri/1983/4103/report.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey, |
