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Search indexed USGS publications on groundwater, aquifers, geologic maps, mineral resources and earthquakes. Explore source records by subject and place.

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At least 901 records · Page 50Linked to original sources
USGS1972

Water resources of the Minnesota River-Hawk Creek watershed, southwestern Minnesota

The Minnesota River – Hawk Creek watershed is located in southwestern Minnesota. The watershed has an area of 1,479 square miles and is drained along its southwestern edge by the Minnesota River (Minnesota Division of Waters, 1959). The major watercourse within the watershed is Hawk Creek, having a drainage area of 510 square miles. Other, shorter streams drain into the Minnesota River but are mostly ephemeral. The watershed has a gently undulating land surface formed on glacial deposits. Directly underlying the glacial deposits in most of the area are Cretaceous sedimentary rocks. Paleozoic and Precambrian rocks are also locally in contact with overlying glacial deposits. Beds of sand and gravel buried at various depths within the glacial deposits are generally thin and discomtinuous but are the most accessible and widely used aquifers in the watershed. Beds of poorly consolidated sandstone in the Cretaceous rocks are locally good aquifers, generally yielding softer water, but in lesser quantities, than aquifers in the overlying glacial deposits. In the eastern part of the watershed, aquifers in Paleozoic and Precambrian sedimentary rocks are capable of high yields to wells and contain water of similar quality to water in the overlying Cretaceous and glacial deposits.

Minnesota↗
USGS1971

Floods in the Guayanilla-Yauco area, Puerto Rico

This report is a compilation of data pertaining to floods in Rios Guayanilla and Yauco and is based principally upon information obtained from residents in the study area. This information is a useful tool in making land-use and development decisions. The Guayanilla and Yauco basins lie in the southwestern part of Puerto Rico. The streams flow southward from the rugged Cordillera Central and empty into Bahia de Guayanilla. The lower basins are devoted principally to the production of sugarcane and are subject to destructive floods. Details pertaining to basin features, flood frequency, flood profiles, and inundated areas are discussed by individual basins. All elevations given are in meters above mean sea level.

Puerto Rico↗
USGS1972

Quality of surface water in the Bear River basin, Utah, Wyoming, and Idaho

The United States Geological Survey, in cooperation with the Utah Department of Natural Resources, Division of Water Rights, began a reconnaissance in 1967 to obtain essential water-quality information for the Bear River basin. The reconnaissance was directed toward defining the chemical quality of the basin’s surface waters, including suitability for specific uses, geology, and general basin hydrology. Emphasis was given to those areas where water-development projects are proposed or being considered.

Idaho, Utah, Wyoming↗