Trash Busters ? A Comparison of Screening Structures for Irrigation Systems
Several irrigation districts in the Pacific Northwest have recently installed screening structures for use in removal of trash from canals, rivers, or reservoirs. Some of the screens have...
Geohydrologic Considerations in Ground Water Modeling
Ground water modeling is an effective engineering and management tool for evaluating complex hydrogeologic situations in a cost effective manner. Objectives of a particular study dictate...
Fate of Chemical Contaminants in Soil
Soil as a medium for storage, attenuation, immobilization, or degradation of chemicals has not provided the capability and protection of resources that was predicted in past fate studies...
Monitoring Groundwater Quality in the Southwest
Monitoring groundwater quality near sources of pollution in the southwest commonly involves highly productive alluvial aquifers. Experience in monitoring in such a setting indicates that...
North American Weather Modification Organizations
The objectives and purposes of most professional, technical and institutional organizations made up of people interested in weather modification as a tool in North American water resources...
Evolution of Water Organisations in England and Wales
Although by the early 1960's there was in existence a large body of legislation dealing with water matters, the Water Resources Act 1963 provided for the first time a significent...
Obstacles to Establishing an Effective Water Resources Planning Process in Developing Countries
Four obstacles stand in the way of effective planning: lack of agreement among participants on practical operating principles; misuse of local money-making opportunities by foreign contractors...
Comparison of Minimum Instream Flow Needs
A sound determination of Instream Flow requirements is facilitated by the use of a physical habitat versus streamflow relationship and the analysis of instream flow benefits produced when...
Instream Flow Needs to Protect Fishery Resources
Numerous methods have been developed over the past several decades to assess the effects of flow regulation on fishery resources and to provide a basis for the determination of suitable...
Benefit-Cost Evaluation of Minimum Instream Flows
In many cases, determinations of minimum desirable instream flows (MIF) are made without full consideration of economic costs and benefits. Benefits are frequently quantified in nonmonetary...
Queensland, Australia - River Diversion Schemes
The east coast of the State of Queensland has high or very high annual rainfall which declines rapidly with distance inland. The area west of the Great Dividing Range, which parallels...
Water Issues in Tropical and Sub-Tropical Australia
The Northern Territory and State of Queensland cover an area of 3. 1 million km**2 and encompass most of the tropical and sub-tropical zones of Australia. Surface and groundwater resources...
Water Supply and Sewage Disposal: Shanghai, China
This paper describes a joint research effort which took place between the Shanghai Bureau of Environmental Protection, Tsinghua University (Beijing), and the University of Michigan. The...
Garrison Diversion Unit?An Example of United States-Canada Cooperative Investigation
Canada and United States have cooperated in the investigation of disputed international waters on numerous occasions. The study of the Garrison Diversion unit is an example of an exhaustive...
The Changing Objectives of Garrison Diversion Unit
Construction of the 101,000-hectare initial stage Garrison Diversion Unit was authorized in August 1965 as a feature of the Pick-Sloan Missouri Basin Program for irrigation and other purposes....
Changes in Management: International Great Lakes
Unprecedented changes in the binational management of the Great Lakes are underway. Problems and programs to solve them increasingly are being considered on an ecosystem (comprehensive,...
The Inquiry on Canadian Federal Water Policy
The paper summarizes the results of an inquiry undertaken into Canadian Federal water policy by three persons appointed by the Canadian Federal Minister of the Environment. The investigation...
Technology Transfer: Consultants and Counterparts
The results of an investigation into the transfer of technical knowledge between and among foreign consultants and their host country counterparts at two large-scale development projects...
Design Criteria for Mass Culturing Spirulina Algae
One extract of Spirulina, developed by Dr. Christopher Hills has been used as a nutrient for cell cultures and contains a growth factor called Spirulina Growth Factor. Another extract...
Guidelines for Maintenance of Aging Water Pipes
Break failure patterns are investigated by applying a new methodology based on Proportional hazards and Poisson-type models. Application on two water distribution systems of North-Eastern...
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