Loss of Carrying Capacity in Pipes?Transporting Softened Water with High pH
The increase in pipe roughness and loss in carrying capacity for water mains carrying high pH water is documented with over 20 field tests conducted in Austin, Texas. The data show that...
Global Risk Assessment: A Naive Look at Initiating Processes
Global risk assessment is finding those initiating processes which may cause harm to Earth systems (and ultimately the human species), their probability of occurrence, and the level of...
Continuous Sampling of Nonpoint Source Pollution
Sediment, nutrient, and other pollutant loads from storm water runoff in a small Texas watershed have been estimated using an initial strategy of periodic grab sampling and a revised strategy...
Nonpoint Source Loads and Phosphorus Budget for Lake LBJ
Nonpoint source loadings from stormwater runoff are a major contributor of pollutant loadings in many locations. A phosphorus budget is developed for Lake Lyndon B. Johnson (LBJ). Lake...
Proposal for Combining Expert Systems and Canal Design
Expert Systems can be combined with a computer aided design methodology to develop a cost effective canal system. The System should consider a feasible set of design alternatives to satisfy...
Economic Impacts of Storm Sewer Design Criteria
This paper discusses the selection of storm sewer design criteria and the resulting economic impacts. Using the Rational Method for calculating design flows, an investigation was made...
Potential Non-Traffic Benefits from a New Highway
The State of Delaware is now in the design/build phase of a major north-south relief highway. Expedient action included an Environmental Impact Statement adequate to show that the project...
Groundwater Loadings of Pesticides From Chemigation: A Gleams Model Simulation
This paper describes how, with slight modifications, the GLEAMS model (Groundwater Loading Effects of Agricultural Management Systems) was used to represent chemigation for herbicides,...
Agricultural, Meteorologic, and Hydrologic Drought Relations: Applications to Irrigation and Water Supply Planning
Meteorologic and hydrologic factors can combine to significantly reduce crop yields, leading to an agricultural drought. Agricultural and hydrologic droughts affect a large segment of...
The Water Erosion Prediction Project: Erosion Processes
The erosion process on hillslopes is conceptualized in the USDA Water Erosion Prediction Project (WEPP) as being divided into rill and interrill processes. Rill detachment occurs when...
Dam Replacement Insurance
Most dam owners recognize that the dams they operate are critical structures, both to water users as well as downstream floodplain occupants. Loss of the structure use has significant...
Water Resources Planning for the San Antonio Region
Water resources planning for the San Antonio region begins with the physical setting and the technical considerations - the science and engineering aspects. It proceeds to the economic...
World Bank's Role in Global Water and Related Environmental Issues
The World Bank provides loans and technical assistance to developing countries for improvement of the physical and economic well-being of the people. A major portion of its lending is...
Conflict Resolution in Regional Water Management
The experience with environmental dispute resolution (EDR) at South Florida Water Management has been largely one of changing the operating premises regarding the agency's...
Planning for Future Hydroelectric Power: A Myth?
The hydroelectric power industry in the U.S. is authorized and regulated by the Federal Government through the Federal Energy Retgulatory Commission (FERC) under the Federal Power Act....
Strategies for Planning Metropolitan Water Supplies
Metropolitan growth and increased concerns for water quality and environmental impacts have created challenges for the provision of water supplies within metropolitan areas. The paper...
Optimal Control of the West Parisian Area Water Supply Network
The West Parisian Area regional office of Lyonnaise des Eaux has been equipped with computer-aided optimal decision-making software, using daily water demand forecasts. This tool calculates...
Simulation Model for Economic Irrigation Project Planning and Design
The principle design parameters considered are: water supply configurations (quantity, source and storage); shapes and sizes of the area to be served; on-farm irrigation techniques; cropping...
Total Sediment Transport and Its Physical and Mathematical Modeling
Some main results in the field of sediment transport theories obtained by the author are presented. Based on these theories, the methods of physical and mathematical modeling for total...
Advances in Computational Mobile-Bed Hydraulics
A new conceptual approach to one-dimensional mobile-bed simulation is briefly described, along with two demonstrative examples. The approach is based on fully coupled solution of the unsteady...
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