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Ground water for irrigation near Lake Emily, Pope County, west-central Minnesota
Wayne A. Van Voast
1971, Water Supply Paper 1899-J
In the Lake Emily area, thickness of the glacial drift ranges from about 200 feet to more than 400 feet. Within the drift are sand and gravel aquifers, some of which can yield adequate water supplies for irrigation. Outwash, as much as 60 feet thick, lies at the surface. The...
Ground water for irrigation in the Brooten-Belgrade area, west-central Minnesota
Wayne A. Van Voast
1971, Water Supply Paper 1899-E
Water for irrigation is needed to improve crop yields from sandy soils in the Brooten-Belgrade area. Ground-water supplies of sufficient quantity and suitable quality for irrigation are available in much of the area. Quaternary glacial drift, as much as 300 feet thick, is underlain by Precambrian crystalline rocks and possibly by...
Ground-water reconnaissance of selected sites in Rocky Mountain National Park and Shadow Mountain National Recreation area, Colorado
F.A. Welder
1971, Open-File Report 71-320
An evaluation of the ground-water supply potential at 30 sites within the Rocky Mountain National Park and Shadow Mountain National Recreation Area was made by the U.S. Geological Survey in 1967 and 1968. The work consisted of a geohydrologic reconnaissance, well inventory, and test drilling. The study sites are underlain...
Map showing locations of samples dated by radiocarbon methods in the San Francisco Bay region
Robert H. Wright
1971, Miscellaneous Field Studies Map 317
Radiocarbon dating is an important interdisciplinary tool for studies involving events and processes during the last 40,000 years of earth history, including studies involving marine transgressions and regressions, land subsidence, climatic changes, sedimentation rates and patterns, fault movements, and archaeology, among others. The potential value of a radiocarbon date is diminished,...
Techniques and equipment required for precise stream gaging in tide-affected fresh-water reaches of the Sacramento River, California
Winchell Smith
1971, Water Supply Paper 1869-G
Current-meter measurements of high accuracy will be required for calibration of an acoustic flow-metering system proposed for installation in the Sacramento River at Chipps Island in California. This report presents an analysis of the problem of making continuous accurate current-meter measurements in this channel where the flow regime is changing...
Relation of drainage problems to high ground-water levels, Coconut Grove area, Oahu, Hawaii
L.A. Swain, C.J. Huxel Jr.
1971, Open-File Report 72-365
Purpose and Scope In 1969, hydrologic data-collection sites were established in and around the Coconut Grove area for the purpose of measuring directly the relationship between rainfall, runoff, ground-water levels, the level of water in Kawainui Swamp and the canals, and tidal fluctuations. The primary objective was to identify the causes...