Texas A&M University Repository - Western Waters Digital Library

The Expanding Dairy Industry: Impact on Ground Water Quality and Quantity with Emphasis...
Major expansion of the dairy industry has occurred in the last 12 years in North Central Texas, especially in Erath County. For several decades, this area has been the location of small dairy farms with sufficient land to maintain low animal... 2007-11-30
2007-11-30
1993-08-01

Effectiveness of Native Species Buffer Zones for Nonstructural Treatment of Urban Runoff
A field study was conducted to determine the influences of vegetation composition, buffer width, and infiltration rate on the effectiveness of native vegetation buffer zones as nonstructural treatments of urban runoff with respect to increasing... 2007-11-30
2007-11-30
1993-10-01

Economic Impact of Withdrawing Specific Agricultural Pesticides in the Lower Rio Grande...
The Air, Pesticides, and Toxics Division of the Environmental Protection Agency (EPA) has encouraged all states to develop a plan to manage the use of pesticides to prevent application that would result in unreasonable risks to human health and... 2007-11-30
2007-11-30
1993-01-01

Natural Salt Pollution and Water Supply Reliability in the Brazos River Basin
The Brazos River Basin is representative of several major river basins in the Southwestern United States in regard to natural salt pollution. Geologic formations underlying portions of the upper watersheds of the Brazos, Colorado, Pecos, Canadian,... 2007-11-30
2007-11-30
1993-08-01

Farmers, Lenders and Water Districts Response to Texas
There are 6.4 million irrigated acres in Texas with 80 percent irrigated from ground water and 20 percent irrigated from surface sources. This is compared to 8.6 million acres irrigated in 1979, a dramatic reduction. Total acre feet of water... 2007-11-30
2007-11-30
1993-11-01

Sediment Transport in the Lower Guadalupe and San Antonio Rivers
Texas law requires that fresh water inflows into coastal regions be maintained at adequate levels for an ecologically sound environment; however, very limited data are available on the relation between river flow and sediment transport to coastal... 2007-11-30
2007-11-30
1992-01-01

On Managing Texas Rural Water Supply Systems: A Socioeconomic Analysis and Quality...
Research Objectives The study reported here is aimed at evaluating the effectiveness of nonprofit, rural water supply corporations or water systems (hereafter referred to as RWSs) in Texas from a sociological perspective. Specifically, the study... 2007-11-30
2007-11-30
1991-05-01

Freshwater Community Responses to Mixtures of Agricultural Pesticides: Synergistic...
This study was an investigation of the effects of the herbicide atrazine and the insecticide bifenthrin on lake communities. The study was conducted in two phases: in phase one, we examined the effects of environmentally realistic levels of... 2007-11-30
2007-11-30
1991-04-01

Particles in Surface Waters: Coagulation and Transport
Conventional water quality assessment and simulation of particles in natural waters focus on bulk concentrations of the suspended solid phase. These analyses rely directly or indirectly on a linear, 'average particle' approach to describe... 2007-11-30
2007-11-30
1991-08-01

Acute and Genetic Toxicity of Municipal Landfill Leachate
Municipal solid waste (MSW) landfills have been found to contain many of the same hazardous constituents as found in hazardous waste landfills. Because of the large number of MSW landfills, these sites pose a serious environmental threat to... 2007-11-30
2007-11-30
1991-10-01

Stochastic Modeling of the Rainfall Runoff-Process for Nonpoint Source Pollutant Load...
A stochastic simulation methodology was developed for the rainfall-runoff process to assist in the assessment of nonpoint source pollutant loads, particularly for ungauged watersheds where there is a scarcity or complete lack of historical data.... 2007-11-30
2007-11-30
1989-12-01

Community Water Demand in Texas
Solutions to Texas water policy and planning problems will be easier to identify once the impact of price upon community water demand is better understood. Several important questions cannot be addressed in the absence of such information. This... 2007-11-30
2007-11-30
1989-04-01

Furrow Diking Technology for Agricultural Water Conservation and its Impact on Crop...
Furrow diking is a practical, efficient and low-cost technique to conserve water and increase crop yields. Improvements in diker design and the increased use of herbicides have resulted in the rapid spread of furrow diking in the Texas High Plains... 2007-11-30
2007-11-30
1988-07-01

An Analysis of the Effects of Sociodemographic Factors on Daily Per Capita Residential...
Water is a key resource of concern to residents and decision makers in the State of Texas and in many other parts of the United States. Careful planning for its use is of utmost importance for the State and the Nation. Such planning requires... 2007-11-30
2007-11-30
1988-02-01

Hydrologic and Institutional Water Availability in the Brazos River Basin
Statement of the Problem Effective management of its surface water resources is essential to the continued growth and prosperity of the state of Texas. Rapid population and economic growth combined with depleting ground water reserves are... 2007-11-30
2007-11-30
1988-08-01

Evaluation of Storage Reallocation and Related Strategies for Optimizing Reservoir...
Statement of the Problem Rapid population and economic growth combined with depleting groundwater reserves are resulting in ever increasing demands on surface water resources in Texas, as well as elsewhere. The climate of the state is... 2007-11-30
2007-11-30
1988-08-01

Irrigation Water Management for the Texas High Plains: A Research Summary
The four main crops produced in the Texas High Plains have been the subject of water management research for several decades by the Texas Agricultural Experiment Station and the USDA/Agricultural Research Service. As expected, experimental results... 2007-11-30
2007-11-30
1987-08-01

Preliminary Investigation of Tracer Gas Reaeration Method for Shallow Bays
Accurate estimates of surface exchange rates for volatile pollutants in bays are needed to allow predictions of pollutant movement and retention time. The same types of estimates can be used to calculate reaeration rates. The tracer gas technique... 2007-11-30
2007-11-30
1987-08-01

Forecasting Water Use in Texas Cities
In this research project, a methodology for automating the forecasting of municipal daily water use is developed and implemented in a microcomputer program called WATCAL. An automated forecast system is devised by modifying the... 2007-11-30
2007-11-30
1987-08-01

Sprinkler Irrigation as an Energy and Water Saving Approach to Rice Production and...
Rice is currently produced on approximately 400,000 acres in the Texas Coastal Prairie. This rice consumes 1.8 million acre-feet of water a year or 13 percent of Texas' renewable water resources. The Texas Coastal Prairie is a delicate ecosystem... 2007-11-30
2007-11-30
1985-03-01

Reservoir Operation in Texas
Effective management of its surface water resources is essential to the continued growth and prosperity of the state of Texas. Rapid population and economic growth combined with depleting ground water reserves are resulting in ever increasing... 2007-11-30
2007-11-30
1985-06-01

Optimum Reservoir Operation for Flood Control and Conservation Purposes
Rapid population and economic growth in Texas is accompanied by increased needs for water supply and flood control. Depleting groundwater reserves are resulting in an increased reliance on surface water. The rising cost of fossil fuel during the... 2007-11-30
2007-11-30
1985-11-01

Improving Surge Flow Irrigation Efficiency Based on Analysis of Infiltration and...
This research investigated the movement of a surface flow profile over an infiltrating soil under conditions of surge flow, and theory related thereto, for use in preliminary design procedures for surge irrigation systems. Four specific research... 2007-11-30
2007-11-30
1985-07-01

Relationship Between Soil Moisture Storage and Deep Percolation and Subsurface Return Flow
A simulation study was performed to analyze the relationship between the volume of moisture stored in a soil profile and the rate of percolation and subsurface return flow. The simulation study was derived on the basis of the Richards equation.... 2007-11-30
2007-11-30
1984-02-01

Recursive Programming Model for Crop Production on the Texas High Plains
A flexible, recursive programming model of crop production on the Texas High Plains was developed. Besides the linear programming (LP) Optimization routine and recursive feedback section, the model also includes a matrix generator and report... 2007-11-30
2007-11-30
1984-02-01