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Our programs produce accurate geologic maps and 3-D geologic frameworks that provide critical data for sustaining and improving the quality of life and economic vitality of the Nation. 

Filter Total Items: 8997

Map Showing Areas Containing Swelling Clay in the Morrison Quadrangle, Jefferson County, Colorado

Formations that contain clays having swelling pressures higher than 2,500 pounds per square foot (as measured by the Potential Volume Change meter) are listed in order of decreasing swelling pressure: Denver Formation, Pierre Shale, Laramie Formation, Green Mountain Conglomerate, Fox Hills Sandstone, and Arapahoe Formation. Some landslides derived from these formations also contain swelling clay a

Map showing areas of past flooding in the Parker Quadrangle, Arapahoe and Douglas counties, Colorado

No abstract available.

Map showing areas of selected potential geologic hazards in the Aspen Quadrangle, Pitkin County, Colorado

No abstract available.

Map showing areas serviced by municipal and private sewerage agencies, San Francisco Bay region, California, 1970

No abstract available.

Map showing avalanche areas in the Aspen Quadrangle, Pitkin County, Colorado

No abstract available.

Map showing construction materials in the Henrys Lake Quadrangle, Idaho and Montana

No abstract available.

Map showing drainage basins and historic cloudburst floods in the Salina quadrangle, Utah

In the Salina quadrangle, as in most of the arid West, summer precipitation commonly occurs as thunderstorms. Suring these storms, rain falls as a torrential downpour, or cloudburst, in a local area. An inch of rain or more may fall in half an hour; U.S. Weather Bureau records show that o.4 inch of rain has fallen in a period of 5 minutes (Woolley, 1946). Such a fall of water far exceeds the absor
By
Water Resources Mission Area, Utah Water Science Center

Map showing echo-sounding survey (3.5 kHz) of Massachusetts and Cape Cod Bays, western Gulf of Maine

No abstract available.

Map showing faults and ground-breakage hazards in the Henrys Lake Quadrangle, Idaho and Montana

No abstract available.

Map showing general availability of ground water in the Salina quadrangle, Utah

The general availability of ground water was determined from well records collected by the U.S. Geological Survey and cooperating State, local, and Federal agencies. Data are for aquifers that in most places are less than 1,000 feet below the land surface. In areas of few or no wells, potential well yields are inferred from geologic data. Special investigations are needed to determine specific fac
By
Water Resources Mission Area, Utah Water Science Center

Map showing general chemical quality of ground water in the Salina quadrangle, Utah

The general chemical quality of water was determined from quality-of-water data collected by the U.S. Geological Survey and cooperating State, local, and Federal agencies. Sources of data include springs, and wells that tap aquifers at depths of less than 1,000 feet. In areas where quality-of-water data are inadequate or lacking, the limits of dissolved solids are inferred from geologic data. More
By
Water Resources Mission Area, Utah Water Science Center

Map showing geologic and structural control of ore deposits, Montezuma district, central Colorado

No abstract available.