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The water infiltration mechanisms in small dams for drinking-trough.

Congress: 2008
Author(s): Juan Estrada Avalos, Miguel Rivera González, Guillermo González Cervantes, José Villanueva Díaz and Luis Manuel Valenzuela Nuñez.
CENID-RASPA INIFAP. Km 6+500 Magen Derecha Canal Sacramento. 35150 Gómez Palacio, Dgo. Tel: (871)719•10•77 Fax: (871)719•11•34 e -mail: estrada.juan@inifap.gob.mx
AbstractThe small dams stores are the superficial runoff with the purpose to water bovine cattle. These works are located mainly in the barren and semiarid zones at north of Mexico where the extensive cattle ranch for beef production represents the main productive activity of these regions. Studies made on the hydrological balance of these small dams indicate that little more of 50 percent of the volume of water stored in these dams is lost by infiltration. With the purpose of a better understanding of this process, this paper indeed analyzes the behavior of these infiltration rates. By doing it, seven representative small dams from a total of 61 reservoirs located in a zone of summer grazing in the state of Durango. Hydrological and climatic variables were observed for two years. Such variables determine the equation of the balance of water in these small dams. By solving this equation, the daily rates of infiltration for each one of the studied small dams were set. Also, test of basic infiltration at the bottom of the dam works were made as in their edges. These results were compared between the different small dams and in function of the season of the year. Likewise, the tendencies of infiltration rates in function of water residence within the dam were analyzed. Finally, three equations were determined. Those equations showed the tendency of the infiltration rates according to the level of water within their works of representative small dams of these grasslands.
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