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Results for “Hydrologic Atlas”

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 253 records · Page 14Linked to original sources
USGS1970

Water resources of the Black River basin, southeastern Michigan

The Black River basin is characterized by flat topography in its central part and by more hilly areas located principally along its boundary. Stream gradients are flat, having slopes of less than 10 feet per mile, except in areas near the basin divide and in isolated areas within the basin.

Michigan↗
USGS1971

Hydrology of the Rosebud Indian Reservation, South Dakota

An investigation of the geology and ground-water resources of the Rosebud Indian Reservation, South Dakota, was made at the request of the Bureau of Indian Affairs as part of the U.S. Department of Interior's program for the development of the Missouri River basin. Originally, the Reservation included all of Mellette, Todd, and Tripp Counties; most of Gregory County, and a small part of Lyman County. (See index map.) However, of the 1,500 square miles of land now owned by individual Indians or by the Rosebud Sioux Tribe, nearly 95 percent is located in Mellette and Todd Counties. Accordingly, the area of this investigation (about 2,700 square miles) was restricted to these two counties.

South Dakota↗
USGS1970

Water resources of the River Rouge basin, southeastern Michigan

The River Rouge basin is characterized by moderately hilly topography to the northwest graduating to a relatively level land surface to the south east. Stream gradients near the northwestern basin divide are relatively steep; but many become more steep in reaches where they cross beach lines of former glacial lakes. In the lower reaches of the River Rouge gradients lessen.

Michigan↗