Determination of evaporation and seepage losses, Upper Lake Mary near Flagstaff, Arizona
Water-Resources Investigations Report
87-4250
By: J.W. Blee
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Abstract
Two mass-transfer equations were developed to compute evaporation as a part of the evaporation were seepage-loss study for the Upper Lake Mary Reservoir near Flagstaff, Arizona, which has a capacity of 15,620 acre-feet and a surface area of 876 acres. The mass-transfer equations do not require an independent measure of evaporation to define the mass-transfer coefficient. Data from other evaporation studies were used to define the mass-transfer coefficient as a function of wind shear and atmospheric stability. Long-term seepage losses were determined by use of a seepage-probability curve-derived from a stage-seepage relation and defined by several selected short-term water budgets-and a lake-stage probability curve. Seepage curves were derived for several different amounts of assumed reservoir sealing. The long-term water saving that would result from each increment of lake-bottom sealing were computed. The study revealed that the evaporation loss was 27 percent of 2 ,100 acre-feet per year of the total reservoir inflow during 1950-71; seepage loss was 45 percent or 3,500 acre-feet per year. (USGS)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Determination of evaporation and seepage losses, Upper Lake Mary near Flagstaff, Arizona |
| Series title | Water-Resources Investigations Report |
| Series number | 87-4250 |
| DOI | 10.3133/wri874250 |
| Edition | - |
| Year Published | 1988 |
| Language | ENGLISH |
| Publisher | U.S. Geological Survey, |
| Description | vi, 39 p. :ill., maps ;28 cm. |
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