Hydrologic Work Group System Using Distributed Task Processing
The notion behind work group systems is that a collection of co-workers, numbering from a few to a few tens of people, is the logical unit around which to build a centralized microcomputer...
Computer Control of Lift Station Operations
A unique computerized control system to supervise the operation of several lift stations has been designed by Boyle Engineering Corporation (Boyle) and constructed by the City of Orlando,...
Wetland Protection Regulations: A Technical Perspective
This paper summarizes the technical basis for the application of wetland protection regulatory schemes upon a number of typical environmental engineering and related projects. A number...
Saving Time and Money with Archaeology
In the past 20 years, archaeology has become a necessary part of many engineering projects. However, this aspect of a project is often regarded as an obstacle in terms of costs and time....
Environmental Infrastructure: Does Civil Engineering Education Meet the Challenge?
The author explores some avenues for re-direction of the civil engineering education process to become more responsive to the needs of infrastructure re-development in the areas of water...
A Stepwise Approach to Environmental Systems Maintenance Management
This paper provides a systematic approach to establishing a maintenance management program for environmental infrastructure. It begins by discussing the definition of program objectives,...
Health Effects Evaluation?Ocean Disposal of Sludge
Court rulings have recently allowed the ocean disposal of municipal wastewater sludge in certain cases. This paper describes a methodology which was developed to determine acceptable loadings...
Irrigation Canal Seepage and its Measurement
Reduction in seepage is one of the primary reasons used to justify investment in canal lining. Such justification depends greatly upon estimates of seepage through surface and subsurface...
Gains and Losses of Commingled Waters in a Stream
In a legal dispute in the State of Washington (Colville Confederated Tribes vs. Boyd Walton, Jr. , Farmer), it became necessary to determine the proportion of transmission losses sustained...
Center Pivots: Iron Dinosaurs of Ogallala Aquifer
In mid-1983, USDA's Soil Conservation Service (SCS) staff in Colorado began a 5-year project aimed at reducing the amount of water the state extracts from the Ogallala aquifer....
Rating Systems to Evaluate Onfarm Water Conservation
The U. S. Department of Agriculture, Soil Conservation Service, concentrates its assistance on modernization of onfarm irrigation systems and improvement of water management to provide...
Irrigation Scheduling with the Neutron Probe
In 1981, the Imperial Irrigation District in cooperation with the United States Bureau of Reclamation started a demonstration irrigation scheduling program on 15,000 acres (6,075 ha)....
Effect of Surge Cycle Ratio and Cycle Time on Infiltration
A recirculating furrow infiltrometer was used to simulate surge flow irrigation for various cycle times and cycle ratios. The data collected was used to evaluate two empirical surge flow...
Effect of Wetted Perimeter on Infiltration in Furrows
Five empirical infiltration equations were evaluated using data from blocked infiltrometer tests with wetted perimeter values ranging from 28 to 49 cm. The results indicate that the Kostiakov...
Water Duty for Agriculture in the Western United States
The agricultural water duty is a measure of the quantity of water reasonably required for use in agricultural crop production. For some time in the western United States, the agricultural...
Proposal for Funding Water Conservation Programs
Programs have been identified which appear to have the potential to conserve significant amounts of water within a large irrigated agricultural area. Losses such as canal seepage, operational...
Optimization of Irrigation Distribution System Operation
The initial phases of the Federal Central Arizona Project (CAP) are nearing completion and in the latter part of this year the long-awaited delivery of Colorado River water will become...
Texas Hiplex Experimental Design
Research into rainfall enhancement in Texas expanded rapidly during the 1970's with the Texas HIPLEX program. More recently, the states of Texas and Oklahoma and the United...
Trends in Irrigation Water Use?Texas Rice Belt
In the Rice Belt along the Texas Gulf Coast, where stress on water resources is increasing, federal, state, and local specialists are conducting a 5-year examination of irrigation. Measured...
Yield-ET Functions in Irrigation Systems Design
A linear-programming (LP) framework and associated computer routines were developed to evaluate economics of deficit irrigation in system design and to optimize the sizing and operation...
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