Use of Pilot Projects for Technology Transfer in Developing Countries
Pilot projects of various sizes - 25-1100 ha of farm land - have been used to demonstrate new concepts in water supply and farming practices in Sri Lanka, India and Pakistan, and they...

Simulating the Effects of Deficit Irrigation for Furrow Systems
The distribution of irrigation water across a field can dramatically affects management of furrow irrigation systems as water supplies become limiting. To assess management strategies...

7-Day 10-Yr Low Flow Relationships for Ungauged Sites in Central Italy
The principal objective of the present study was to establish relationships between some easily measurable basin characteristics and seven-day ten-year Low Flow Index, Q7,10....

Design and Maintenance Factors Affecting Application Uniformity of Low Pressure Center-Pivot Irrigation Systems
Uniformity tests were conducted on 30 center-pivot sprinkler systems installed with one of six different low pressure nozzle types or high pressure impact sprinklers. Well designed and...

Combined Allocation and Operation Model
Delft Hydraulics has developed a model package for the water management of irrigation schemes. The model package runs on a Personal Computer and is to be used by local water managers....

Rehabilitating Irrigation Systems from the 20th Century for the 21st Century
Irrigation projects were begun in the southwestern United States in the late 1800's. These projects were increased and modified during the 1900's and have become the lifeblood of reservations...

Rehabilitating Irrigation Systems with USDA Water Quality Programs
Recently, the United States Department of Agriculture (USDA) targeted several irrigated areas with chemically-impaired water bodies for accelerated technical and financial assistance to...

Planning for Water Conservation Through Irrigation System Modernization and Rehabilitation
A landmark agreement became effective in December 1989 between the Metropolitan Water District of Southern California and Imperial Irrigation District which provides for the implementation...

Broad-Crested Weir Application on 15,000-Acre Farm
Growers in California have been subjected to increasing pressure to account for water used on the farm due to limited water supplies and increasing energy costs. Water measurement capability...

Irrigation and Drainage System As-Built Map Preparation Using Satellite Digital Imagery and a GIS
Multispectral remote sensing from satellite platforms has led to the development of numerous applications which use digital imagery for the classification and mapping of natural resources...

Meteorological Aspects of Drought
This is an overview paper discussing meteorological aspects of drought, and it is part of the report of the Task Committee on Water Management During Droughts. Several drought definitions...

Hydrological Aspects of Droughts
Two hydrologic aspects of droughts are investigated in this study as a part of the work conducted for the task committee on water management during droughts. In the first part a monthly...

Objective Measurement of Drought and Agricultural Response to Drought in the Water-Constrained Monsoon Climate of Tamil Nadu, India
Existing definitions of drought, particularly those based on annual or seasonal probability of occurrence, can fail to characterize adequately the relationship between transient shortfalls...

Operation of the Central Valley Project During California's Drought
The Federal Central Valley Project is one of the country's major water resource developments. A severe 5-year drought has tested the capabilities of the CVP to meet its authorized purposes....

Water Management Under Drought Conditions: An Overview of Practices by Non-Federal Entities
This paper provides an overview of water management procedures and practices of non-federal water management agencies under drought conditions. The general components of drought water...

Operation of the Tennessee Valley Authority Water Control System Under Extreme Drought Conditions
The Tennessee Valley region recently suffered through the most severe drought of record. As increasing demands were placed on the reservoir system, operating priorities were modified to...

Soil Moisture and Runoff?Another Look
Infiltrometer studies conducted on numerous soil types in various locations of the United States which had soil moisture data were used to calculate the runoff Curve Number (CN) of both...

Retention Parameter Estimates for Curve Number Runoff Procedure
A technique is developed for computing estimates and associated probabilities of the retention parameter S in the Soil Conservation Service curve number runoff procedure. This technique...

Hydrologic Considerations in Mined Land Reclamation
Thunder Basin Coal Company (TBCC), a subsidiary of the Atlantic Richfield Company, operates the Black Thunder Mine in the Powder River Basin of Northeast Wyoming. The mine, located roughly...

Variations in Curve Number for a Reclaimed AML Site
Runoff and erosion from an abandoned mine land site near Sheridan, Wyoming were monitored for four years following reclamation. Small plots, which included lengths from 12 to 24 meters...

 

 

 

 

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