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txspace.tamu.edu 檢索結果共 5447 筆,本頁資料從第 133 筆到第 144 筆

In the Upper Galveston Bay region of the Texas coastal zone, water from naturally replenished underground aquifers provides much of the freshwater supply for municipal, industrial and agricultural needs. The availability of these easily accessible low cost freshwater supplies has contributed to the building of a strong and dynamic economic base. However use of these com....

By L. L. Jones,W. L. Brah--Texas Water Resources Institute--2007-12-07
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Improved technology is needed for use in properly managing large agricultural watersheds. Proper watershed management means selecting land uses that are appropriate for each subarea, using erosion control measures where necessary, and applying fertilizers at rates that maximize agricultural production without polluting the environment. Watershed runoff and industrial an....

By R. W. Hann,J. R. Williams--Texas Water Resources Institute--2007-12-07
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Southern forests are expected to supply a large portion of the Nation's future timber requirement. Projected demands on southern forests continue to exceed allowable cut. As an outgrowth of this demand, intensive management of pine forests enabled the South to produce 45 percent of the Nation's timber harvest in 1970 (USDA, Forest Service, 1973). The Southern Forest Res....

By M. G. DeHaven,T. A. Blume,B. D. Jackson,J. E. deSteiguer,C. A. Hickman,W. H. Blackburn--Texas Water Resources Institute--2007-12-07
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The High Plains and Trans Pecos regions of Texas are semi-arid crop production regions located in the western part of the state. Relatively low levels of rainfall are supplemented by irrigation from groundwater supplies. These regions produced 51 percent of the cotton, 42 percent of the grain sorghum, and 48 percent of the wheat produced in Texas in 1974 (Texas Crop and....

By J. A. Petty,L. Zavaleta,D. C. Hardin,G. D. Condra,R. D. Lacewell--Texas Water Resources Institute--2007-12-07
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The Federal Water Pollution Control Act Amendments of 1972, Public Law 92-500, established a national goal of eliminating the discharge of pollutants into the nation's waterways by 1985. As a step toward that goal an interim water quality standard of "fishable, swimmable waters nationwide" by July 1, 1983 was set. Under section 208 of this law, each state was required t....

By D. R. Reneau,C. R. Taylor,B. L. Harris--Texas Water Resources Institute--2007-12-06
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This report summarizes results of economic analyses of erosion and sedimentation in five agricultural watersheds in Texas (see fig. 1). Economic analyses of the study areas considered both the on-farm economics of soil conservation and the economic consequences of various sedimentation control options. These topics were joined in the studies because they deal with diffe....

By C. R. Taylor,D. R. Reneau,B. L. Harris--Texas Water Resources Institute--2007-12-06
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By A. T. Weichert,R. W. Knight,W. H. Blackburn,M. G. DeHaven--Texas Water Resources Institute--2007-12-05
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The Bureau of Reclamation has approved a program for farmer storage of surface irrigation water in Elephant Butte Reservoir, New Mexico. This program would allow individual farmers to store part of their annual surface water allotment in the reservoir subject to evaporation loss to be drawn at a future date upon request. The purpose of this study is to ascertain the eco....

By R. D. Lacewell,G. C. Cornforth--Texas Water Resources Institute--2007-12-05
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By G. Acosta-Gonzalez,D. L. Reddell--Texas Water Resources Institute--2007-12-05
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Solar energy is a promising alternate energy source for space heating. A method of economic long term solar energy storage is needed. Researchers have proposed storing solar energy by injecting hot water heated using solar collectors into groundwater aquifers for long term energy storage. Analytical solutions are available that predict water temperatures as hot water is....

By D. L. Reddell,E. K. Grubaugh--Texas Water Resources Institute--2007-12-05
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Solar energy is a possible alternate energy source for space heating. A method of economic long term solar energy storage is needed. Researchers have proposed storing solar energy by heating water using solar collectors and injecting the hot water into groundwater aquifers for long term energy storage. Of paramount importance to the success of such a system is the quali....

By D. B. Reed,D. L. Reddell--Texas Water Resources Institute--2007-12-05
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A new concept in irrigation system design, which has the potential of significant savings in both water and energy requirements, has been developed and is under evaluation. The system is characterized by and has been labeled a low energy-precision application (LEPA) system, which rather than spraying water into the air at moderate to high pressures, distributes it direc....

By W. M. Lyle,J. P. Bordovsky--Texas Water Resources Institute--2007-12-05
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