Comparison of Surge and Continuous Flow Irrigation in California
With the closure of the Kesterson National Wildlife Refuge to drainwater disposal and the pending limits on tailwater flows to the San Joaquin River, decreasing deep percolation is of...
Feasibility of Weather Modification for California's State Water Project
The California Department of Water Resources (DWR), in the mid 1950's, contracted with some 30 water agencies to eventually furnish about 4. 2 million acre-feet (MAF) of water...
Weather Modification Versus Drought?No Contest
The Colorado River Municipal Water District has sponsored a summertime West Texas cloud-seeding program to increase rainfall in each year since 1970. Because of the program's...
Three Rainfall Augmentation Programs in Texas
Three rainfall augmentation programs were initiated during the summer of 1985 in response to drought conditions affecting Texas in 1984. These programs were supported by two municipalities...
Selenium: Essential Nutrient or Toxic Threat?
The essential nutrient selenium is believed responsible for numerous deformities, reproductive failures, and deaths of migratory birds at Kesterson Reservoir in the San Joaquin Valley,...
Selenium: It's Not Just in California
The U. S. Department of the Interior has embarked on a series of reconnaissance level investigations throughout the western states to identify and assess potential irrigation-induced water...
Agricultural Drainage Water?How Should It be Regulated?
This paper discusses the existing framework of California liquid waste disposal law, the obstacles presented by these and other laws pertaining to agricultural drainage water disposal...
Economic Analysis Tools for Differential Inflation
Economic decisions based on a life-cycle analysis should consider differential increases or decreases in operation and replacement costs and benefits over the project or component life....
The Animas-La Plata Project Cost Sharing Agreement
The United States Congress required a cost-sharing agreement between the project beneficiaries and the Federal government. Under this agreement of June 30, 1986, the project will be constructed...
Economic Benefit of Irrigation on Beef Ranches
Drought can result in forage shortages leading to possible liquidation of the breeding herd. Liquidation is often at depressed prices, and replacement may be at elevated prices. In this...
Winery Wastewater Land Application
Winery wastewater is characterized by low pH, relatively high BOD, and a low nutrient content. Land application using rapid infiltration basins has been practiced successfully at a number...
Management Challenges Affecting Agricultural Reuse of High-Strength Food Processing Wastewaters
Land treatment of high-strength food processing wastewaters is a viable pollution control technology. Due to the high-strength characteristics of these wastewaters, effective site management...
CWSI and Stomatal Resistance of Cotton and Soybeans
A new instrument, Scheduler(TRADEMARK), has been developed to measure the onset and duration of plant water stress. This device consists of a sensor package (containing an infrared thermometer,...
Steady State Fluid Transport Model for Plants
Knowledge of water potentials throughout the xylem and phloem elements as well as in individual cells is fundamental for understanding effects of water and temperature stress on transport...
Satellite Remote Sensing for Regional Crop Inventories
LANDSAT 4 and 5 Satellite spectral images of the Columbia Basin were obtained during the 1984, 1985 and 1986 growing seasons by Cropix, Inc. of Hermiston, Oregon. A field classification...
An Integrated Rehabilitation Procedure for Gravity Systems
Demands for an improved system combined with a more adjusted management mode are common in many projects where limited or strained budgets do not allow for a regular and secure water supply....
Crop Yield Models Adapted to Irrigation Scheduling Programs
A crop yield model (CRPSM) was adapted to match the data obtained with typical irrigation scheduling programs. Daily soil water content was calculated from weather data, crop growth stage...
California's Dam Safety Program?The Development of Hydrology for Dams (
California's water code provides for supervision of dams and reservoirs with regard to protection of life and property. This code is administered by the Department of Water...
Irrigation with Reclaimed Wastewater?Recent Trends
Land application of municipal wastewater is a well established practice in California. Much of the reclaimed municipal wastewater (57%) in California is used for irrigation of fodder,...
Forty Years of Computational Hydraulics?1960-2000
The definition of computational hydraulics as used herein is: the application of numerical methods for the solution of problems of hydraulic flows, largely as practiced by the civil engineering...
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