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Extensive greenhouse experiments were conducted to evaluate chemicals not previously studied extensively for their potential as evaporation suppressants. Included in the studies were crude oil, anionics, cationics, nonionics, silicones,...
2011-06-30
2011-06-30
1971-02-01
Water resources planners and systems analysts are continually confronted with many complex optimization problems. Two major factors contribute to this problem. Firstly, mathematical modeling and system description capabilities in water resources...
2011-06-30
2011-06-30
1971-02-01
The development and use of land and water resources has been and will continue to be significantly affected by institutions--legal, cultural, economic, political and religious. Institutions are the organizing and directing mechanisms by which we...
2011-06-30
2011-06-30
1971-03-01
Water users in the Lower Rio Grande Basin of Texas have depended on the flow of the Rio Grande to supply water for agricultural as well as municipal and industrial purposes. Although the area is a major agricultural production region, it faces...
2011-06-30
2011-06-30
1971-03-01
The normal, log-normal, square-root-normal, and cube-root-normal frequency distributions of hydrometeorological data, viz., precipitation, evaporation, and streamflow, were studied for selected regions of Texas. The regions were: East Texas, South...
2011-06-30
2011-06-30
1971-06-01
This interim report describes the research performed to date on Project A-017-TEX sponsored by the U. S. Department of Interior Office of Water Resources Research and the Texas A&M University Texas Water Resources Institute. The research reported...
2011-06-30
2011-06-30
1971-09-01
Two computer programs were developed. One simulated vertical unsteady infiltration through the surface into a homogeneous unsaturated soil. Simulation results were obtained for three different soils--Yolo light clay, Adelanto loam, and Pachappa...
2011-06-30
2011-06-30
1971-11-01
Twenty-one thousand fish representing 9 orders, 14 families and 56 species were collected from various habitats of the Navasota River drainage. Some species such as Notropis lutrensis, Gambusia affinis and Lepomis macrocllirlls were taken...
2011-06-30
2011-06-30
1972-08-01
In Chapter I of this report a model of a single multi-purpose reservoir with stochastic inflows is addressed. The objective of the model is the development of an optimal operating policy for given time sequence of minimum and maximum reservoir...
2011-06-30
2011-06-30
1972-06-01
This report examines the validity and explores the practical implications of the proposition that CO2 enrichment of the leaf environment enhances plant growth and, simultaneously decreases plant water use. A theoretical analysis of the water and...
2011-06-30
2011-06-30
1972-06-01
This study analyzes the response to an outstanding design and development of a park-business complex along a natural river in the heart of a major city, The San Antonio River Walk. The research includes both those who visit and those who control...
2011-07-01
2011-07-01
1972-06-01
Estuaries represent an economically and biologically important part of our coast. These bodies of water are used as permanent homes or nursery grounds for many of the important forms of marine life. Estuaries also provide protected transportation...
2011-07-01
2011-07-01
1972-10-01
Water harvesting is a potential source of water for arid and semiarid lands. The objectives of this study were to determine combinations of land surface treatments and land forming which result in efficient but inexpensive water harvesting...
2011-07-01
2011-07-01
1972-09-01
An expansion of tile supply of water and greater efficiency in its use are necessary for the future economic development of the state of Texas. Imported water, supplemental to that available in the state, is an important part of development plans...
2011-07-01
2011-07-01
1973-01-01
A general Limnological Survey was made of the Navasota River, Texas, a tributary of the Brazos River, between February, 1968 and March, 1970. Five stations on the main channel were visited twice monthly from February, 1968 to January, 1970, and...
2011-07-01
2011-07-01
1973-12-01
A hydrometeorological model is presented that utilizes 30-day meteorological forecasts of temperature and precipitation issued every 15 days by the National Weather service to provide an estimate of the future hydrometeorological conditions of a...
2011-07-01
2011-07-01
1973-06-01
The importance of an economic study of the Paseo del Rio (a highly developed portion of the San Antonio River) has greatly increased with the proposal of many extensions, each of which will involve large investment. That developmental plan which...
2011-07-01
2011-07-01
1973-04-01
Growth in population and economic activity has been accepted as the essential elements of American life for almost two centuries. Since the beginning of the seventies, we have begun to concern ourselves with the quality of this growth. Meanwhile,...
2011-07-01
2011-07-01
1973-04-24
A significant pollution potential from cattle manure has developed as a result of the cattle feeding industry progressing to large, high density feeding operations. Two major potential sources of pollution from beef feedlots is storm runoff and...
2011-07-01
2011-07-01
1973-06-01
One of the most perplexing problems in the United States today is concerned with providing the public services required in rapidly-expanding urban areas. A substantial portion of the total public service problem in the urban area involves the...
2011-07-01
2011-07-01
1973-06-01
The purpose of this investigation was to develop techniques to assist water planners in the optimum implementation of their plans. Specifically, techniques useful for continual evaluation of water plans and for scheduling the sequence and timing...
2011-07-01
2011-07-01
1973-06-01
It seems possible, perhaps even likely, that some errors of fact and/or judgment may have been made in the process of allocation of national requirements among states. There may be instances where data are inadequate for the correct expression of...
2011-07-01
2011-07-01
1973-08-01
The demand by consumers for public-owned low-priced natural resources is essentially insatiable. When natural resources become scarce the public is agonized by the problem of making an optimum choice or choices from feasible alternatives,...
2011-07-01
2011-07-01
1973-10-01
This study was undertaken in an effort to develop procedural methodology for the consideration of alternative solutions for water resources development in a short period of time with a view toward reduction of total costs involved in...
2011-07-01
2011-07-01
1974-05-01
An earlier study, Cultural Benefits from Metropolitan River Recreation--San Antonio Prototype, (Gunn, et al., 1972), revealed that urban water resources can be successfully developed for tourism and recreation. The San Antonio River Walk is a...
2011-07-01
2011-07-01
1974-06-01
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