Surface water supply of the United States, 1960, Part 12, Pacific slope basins in Washington and upper Columbia River basin
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Water Supply Paper↗
Geology topics
E. L. Hendricks
Publications and source records attributed to E. L. Hendricks.
Surface water supply of the United States, 1960, Part 14, Pacific slope basin in Oregon and Lower Columbia River basin
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Water Supply Paper↗
Progress report on use of water by riparian vegetation, Cottonwood Wash, Arizona
Measurements of streamflow, ground-water levels, and meterological data obtained in a 4.1-mile reach of the flood plain of Cottonwood Wash, Mohave County, Ariz., define the use of water by riparian vegetation in that part of the stream valley. The computed evapotranspiration loss during the growing season of 1959 was 175 acre-feet, which represented about 33 percent of the water that entered the reach. The maximum rate of loss during the season was slightly more than 8 acre-feet per week, or about 60 percent of the inflow. The project reach is divided into two parts: An upstream subreach of 2.6 miles and a downstream subreach of 1.5 miles. Seasonal losses in the upstream and downstream subreaches were 75 and 100 acre-feet respectively. Losses in the shorter downstream subreach were larger because of the greater plant population. During the summer of 1960 the vegetation in the lower subreach will be chemically defoliated as a part of the experiment to determine the savings in water losses that can be effected by modifying riparian vegetation. Tests on chemical defoliants indicate that a single spraying eliminates the leaves on cottonwood trees for 7 or 8 days and that no permanent damage results.
Circular↗
Water resources of southwestern Louisiana
In southwestern Louisiana large quantities of fresh water are available for agricultural, municipal, domestic, and industrial purposes. However, local and regional problems resulting from salt-water encroachment in the streams and persistent declines of the groundwater levels in certain areas during . drought periods have caused some concern regarding the future water supply of the region. · In order to appraise the situation, to provide hydrologic information basic to development of the area, and to provide a basis for sound plans for alleviating recurrent dry-year losses, a study of the ground-water resources of the area was begun in 1938 through cooperation with the Louisiana Geological Survey, Department of Conservation. An intensive investigation comprising ground-water, surface-water, and quality-of-water studies was authorized in 1948 in cooperation with the Louisiana Department of Public Works, and was completely under' way before the 1949 irrigation season. The studies were carried through the irrigation season of 1951.
Louisiana↗