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dc.contributor.authorYoung, Don W.
dc.contributor.authorColmer, Gerald
dc.contributor.authorGoodwin, Scott
dc.date.accessioned2013-07-18T19:38:43Z
dc.date.available2013-07-18T19:38:43Z
dc.date.issued1990-04-21
dc.identifier.issn0272-6106
dc.identifier.urihttp://hdl.handle.net/10150/296435
dc.descriptionFrom the Proceedings of the 1990 Meetings of the Arizona Section - American Water Resources Association and the Hydrology Section - Arizona-Nevada Academy of Science - April 21, 1990, Arizona State University, Tempe, Arizonaen_US
dc.description.abstractDuring the summer of 1989, a water balance study was conducted at Lee Valley Reservoir, located approximately 19 miles southwest of the town of Eagar in Apache County, Arizona. The objectives of this study were to quantify evaporation and seepage losses from the lake and substantiate the use of a land-based evaporation pan to estimate lake evaporation. Lake level, inflow, controlled releases, precipitation and evaporation were measured on a twice weekly basis for six months from May 1 to October 31. Evaporation was measured in a Class A evaporation pan designed to float in the reservoir. Evaporation was also measured at a Class A land pan near the town of Eagar. A 1.0 inch difference in the estimated rate and the measured rate for a 147-day period of common record represents a 3.6% error between the land-based pan and the floating pan. Total losses from the lake over the six -month period were 224 acre-feet. Of this loss controlled releases accounted for 8.2 acre-feet, and evaporation was measured at 116 acre-feet. The remaining loss of 100 acre-feet is due to seepage, much of which can be seen as seeps rising within 800 feet downstream from the dam. Using average data from past years, an annual water balance for the lake was also calculated.
dc.language.isoen_USen_US
dc.publisherArizona-Nevada Academy of Scienceen_US
dc.rightsCopyright ©, where appropriate, is held by the author.
dc.subjectHydrology -- Arizona.en_US
dc.subjectWater resources development -- Arizona.en_US
dc.subjectHydrology -- Southwestern states.en_US
dc.subjectWater resources development -- Southwestern states.en_US
dc.titleQuantification of Evaporation and Seepage Losses with a Floating Evaporation Pan: Lee Valley Reservoir, Arizonaen_US
dc.typetexten_US
dc.typeProceedingsen_US
dc.contributor.departmentWater Rights Adjudication Team, Phoenix, Arizonaen_US
dc.contributor.departmentUnited States Department of Agriculture, Springerville, Arizona 85938en_US
dc.identifier.journalHydrology and Water Resources in Arizona and the Southwesten_US
dc.description.collectioninformationThis article is part of the Hydrology and Water Resources in Arizona and the Southwest collections. Digital access to this material is made possible by the Arizona-Nevada Academy of Science and the University of Arizona Libraries. For more information about items in this collection, contact anashydrology@gmail.com.en_US
refterms.dateFOA2018-08-30T09:06:05Z
html.description.abstractDuring the summer of 1989, a water balance study was conducted at Lee Valley Reservoir, located approximately 19 miles southwest of the town of Eagar in Apache County, Arizona. The objectives of this study were to quantify evaporation and seepage losses from the lake and substantiate the use of a land-based evaporation pan to estimate lake evaporation. Lake level, inflow, controlled releases, precipitation and evaporation were measured on a twice weekly basis for six months from May 1 to October 31. Evaporation was measured in a Class A evaporation pan designed to float in the reservoir. Evaporation was also measured at a Class A land pan near the town of Eagar. A 1.0 inch difference in the estimated rate and the measured rate for a 147-day period of common record represents a 3.6% error between the land-based pan and the floating pan. Total losses from the lake over the six -month period were 224 acre-feet. Of this loss controlled releases accounted for 8.2 acre-feet, and evaporation was measured at 116 acre-feet. The remaining loss of 100 acre-feet is due to seepage, much of which can be seen as seeps rising within 800 feet downstream from the dam. Using average data from past years, an annual water balance for the lake was also calculated.


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