Water budget computer model to investigate the effectiveness of evaporation control on Thompson Reservoir, Santa Catalina Island, California
AuthorLozier, William Blaine.
Evaporation control -- California -- Santa Catalina Island -- Data processing.
Committee ChairEvans, Daniel D.
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PublisherThe University of Arizona.
RightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
AbstractEvaporation control is investigated as a partial solution to Santa Catalina Island's historical problem of an inadequate freshwater supply. The objective is to determine what effect an evaporation cover would have on increasing the safe yield of the major water supply reservoir, Thompson Reservoir. A water budget computer model of the reservoir/aquifer system is developed. The model is capable of recreating the reservoir elevation history since November, 1966. Domestic use is increased to determine the safe yield of the system based on the period 1966-1983. The calculated safe yield of 406 acre-feet is not realistic considering that more extreme drought conditions have occurred prior to 1966. This indicates that the actual safe yield of the reservoir is somewhat lower. Evaporation control runs were made with cover areas of 5, 10, 15, 20 and 25 acres. It was found that these covers are effective in increasing the safe yield by as much as 70 acre-feet per year. It is concluded that evaporation control on Thompson Reservoir would be an effective means of increasing Catalina's freshwater supply.
Degree ProgramHydrology and Water Resources