Evaporation from seven reservoirs in the Denver water-supply system, central Colorado
Water-Resources Investigations Report
76-114
By: John F. Ficke, D. Briane Adams, and T.W. Danielson
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Abstract
Seven reservoirs in central Colorado, operated by the Denver Board of Water Commissioners, were studied during 1967-73 to determine evaporation losses. These reservoirs, Elevenmile Canyon, Dillon, Gross, Antero, Cheesman, Williams Fork, and Ralston, are located on both sides of the Continental Divide. Methods for computing evaporation include energy-budget, mass-transfer, and pan relationships. Three reservoirs, Elevenmile Canyon, Dillon, and Gross, had mass-transfer coefficients calibrated by energy-budget studies. At the remaining reservoirs, an empirical technique was used to estimate the mass-transfer coefficient. The enery-budget-calibrated methods give the most accurate evaporation values; the empirical coefficients give only a best estimate of evaporation. All reservoirs should be calibrated by energy-budget studies. The pan method of computing evaporation is the least reliable method because of problems of advected energy through the sides of the pan, representative pan exposure , and the irregularity of ratios of reservoir to pan evaporation. (Woodard-USGS)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Evaporation from seven reservoirs in the Denver water-supply system, central Colorado |
| Series title | Water-Resources Investigations Report |
| Series number | 76-114 |
| DOI | 10.3133/wri76114 |
| Edition | - |
| Year Published | 1977 |
| Language | ENGLISH |
| Publisher | U.S. Geological Survey, Water Resources Division, |
| Description | viii, 170 p. :ill. ;26 cm. |
| Google Analytic Metrics | Metrics page |