Determination of evaporation and seepage losses, Upper Lake Mary near Flagstaff, Arizona

Water-Resources Investigations Report 87-4250
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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)

Additional publication details

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.