| OCR Text |
Show CALIFORNIA DEFENDANTS Exhibit No. 1250 Identification: July 15, 1957 Admitted; Extract From Blaney, Consumptive-Use Requirements for Water, Reprinted From Volume 35, Agricultural Engineering, No. 12 (December 1954). Evapotranspiration (or consumptive use) is one of the important elements in the hydrologic cycle of water movement from the time water falls on the land as rain or snow until it reaches the ocean. It includes all transpiration and evaporation losses from lands on which there is growth of vegetation of any kind, whether agricultural crops or native vegetation, plus evaporation from bare land and from water surfaces. In this paper the term "evapotranspiration" is considered synonymous with the term "consumptive use." Evapotranspiration involves problems of water supply, both surface and underground, and watershed management, as well as those of the management and general economics of irrigation and multiple-purpose projects. Data on the use of water by vegetative cover are essential in planning federal, state, and private irrigation and water-supply projects in arid and semiarid regions. . The investigation, Consumptive Use of Water in the Upper Rio Grande Basin, comprising some 34,000 square miles in Colorado, New Mexico and Texas, was required |
| Source |
Original book: [State of Arizona, complainant v. State of California, Palo Verde Irrigation District, Coachella Valley County Water District, Metropolitan Water District of Southern California, City of Los Angeles, California, City of San Diego, California, and County of San Diego, California, defendants, United States of America, State of Nevada, State of New Mexico, State of Utah, interveners] : California exhibits. |
