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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 109 records · Page 6Linked to original sources

USGS1970

John Wesley Powell: soldier, explorer, scientist

One hundred years ago John Wesley Powell and nine adventure-seeking companions completed the first exploration of the dangerous and almost uncharted canyons of the Green and Colorado Rivers. By this trip, Powell, a 35-year old teacher of natural history, apparently unhampered by the lack of his right forearm (amputated after the Battle of Shiloh) opened up a large unknown part of continental United States and brought to a climax the era of western exploration.

General Information Product↗

USGS1967

Prospecting for gold in the United States

Prospecting for gold is something that probably everyone dreams of trying at least once. To the person who is mainly concerned with this activity as a vacation diversion, prospecting offers a special excitement. There is a constant hope that the next pan of sediment may be "pay dirt," and no other thrill can compare with that experienced when one sees even a few tiny flecks of gold glittering in the black sand at the bottom of his pan. The search itself is its own reward for the efforts expended by the vacation prospector. The would-be prospector hoping for financial gain, however, should carefully consider all the facts of the situation before deciding to set out on a prospecting expedition.

General Information Product↗

USGS1987

River basins of the United States: the Colorado

This leaflet, one of a series on the river basins of the United States, contains information on the Colorado River Basin, including a brief early history, a description of the physical characteristics, and other statistical data. At present, other river basins included in the series are The Columbia, The Delaware, The Hudson, The Potomac, and The Wabash.

Arizona, Colorado, Nevada, New Mexico, Utah, Wyomi↗

USGS1981

River basins of the United States: the Columbia

This leaflet, one of a series on the river basins of the United States, contains information on the Columbia River Basin, including a brief early history, a description of the physical characteristics, and other statistical data. At present, other river basins included in the series are The Colorado, The Delaware, The Hudson, The Potomac, and The Wabash.

British Columbia, Idaho, Montana, Nevada, Oregon, ↗

USGS1981

River basins of the United States: the Delaware

This leaflet, one of a series on the river basins of the United States, contains information on the Delaware River Basin, including a brief early history, a description of the physical characteristics, and other statistical data. At present, other river basins included in the series are The Colorado, The Columbia, The Hudson, The Potomac, and The Wabash.

Delaware, New Jersey, New York, Pennsylvania↗

USGS1981

River basins of the United States: the Hudson

This leaflet, one of a series on the river basins of the United States, contains information on the Hudson River Basin, including a brief early history, a description of the physical characteristics, and other statistical data. At present, other river basins included in the series are The Colorado, The Columbia, The Delaware, The Potomac, and The Wabash.

Massachusetts, New Jersey, New York, Vermont↗

USGS1988

River basins of the United States: the Potomac

This leaflet, one of a series on the river basins of the United States, contains information on the Potomac River Basin, including a brief early history, a description of the physical characteristics, and other statistical data. At present, other river basins included in the series are The Colorado, The Columbia, The Delaware, The Hudson, and The Wabash.

Maryland, Pennsylvania, Virginia↗

USGS1981

River basins of the United States: the Wabash

This leaflet, one of a series on the river basins of the United States, contains information on the Wabash River Basin, including a brief early history, a description of the physical characteristics, and other statistical data. At present, other river basins included in the series are The Colorado, The Columbia, The Delaware,The Hudson, and The Potomac.

Illinois, Indiana↗

USGS1969

Safety and survival in an earthquake

Many earth scientists in this country and abroad are focusing their studies on the search for means of predicting impending earthquakes, but, as yet, an accurate prediction of the time and place of such an event cannot be made. From past experience, however, one can assume that earthquakes will continue to harass mankind and that they will occur most frequently in the areas where they have been relatively common in the past. In the United States, earthquakes can be expected to occur most frequently in the western states, particularly in Alaska, California, Washington, Oregon, Nevada, Utah, and Montana. The danger, however, is not confined to any one part of the country; major earthquakes have occurred at widely scattered locations.

General Information Product↗

USGS1980

Steps to the moon

The exploration of the Solar System is well underway. What is learned contributes to our fund of knowledge about the nature of the Earth, the processes that formed it, and the forces that controlled its evolution.

General Information Product↗

USGS1999

The U.S. Geological Survey Strategic Plan 1999-2009

This new version of the USGS Strategic Plan builds on our first strategic plan, which was developed in 1996, and focuses specifically on strategic goals in four areas: customers, programs, people, and operations of the USGS.

General Information Product↗

USGS1989

Suggestions for prospecting

Prospectors have contributed much to the development of this Nation's mineral resources. Since the time of the earliest settlement, the need for iron for tools and guns, lead for bullets, and copper for utensils has prompted a search for sources of these metals. The lure of gold and silver provided the impetus for much of the development in the West between 1850 and 1910. Later, prospectors carried out successful ventures to fulfill the country's expanding industrial demands for other metals such as zinc, molybdenum, tungsten, chromium, vanadium, and many others. Even America's uninhabited rugged mountains or barren deserts have been prospected although perhaps only at a reconnaissance scale.

General Information Product↗

USGS1992

Topographic mapping

The U.S. Geological Survey (USGS) produced its first topographic map in 1879, the same year it was established. Today, more than 100 years and millions of map copies later, topographic mapping is still a central activity for the USGS. The topographic map remains an indispensable tool for government, science, industry, and leisure.

General Information Product↗

USGS1978

Topographic maps

A topographic map is a line-and-symbol representation of natural and selected man-made features of a part of the Earth's surface plotted to a definite scale. A distinguishing characteristic of a topographic map is the portrayal of the shape and elevation of the terrain by contour lines.

General Information Product↗

USGS1975

Topographic maps

A topographic map is a graphic representation of selected manmade and natural features of a part of the earth's surface plotted to a definite scale. The distinguishing characteristic of a topographic map is the portrayal of the shape and elevation of the terrain.

General Information Product↗

USGS1976

Chart of conversion factors: From English to metric system and metric to English system

The conversion factors in the following tables are for conversion of our customary (English) units of measurement to SI*units, and for convenience, reciprocals are shown for converting SI units back to the English system. The first table contains rule-of-thumb figures, useful for "getting the feel" of SI units or mental estimation. The succeeding tables contain factors accurate to 3 or more significant figures. Please refer to known reference volumes for additional accuracy, as well as for factors dealing with other scientific notation involving SI units.

General Information Product↗

USGS1980

Topographic maps: Tools for planning

Topographic maps are a detailed record of a land area, giving geographic positions and elevations for both natural and man-made features. They show the shape of the land the mountains, valleys, and plains by means of brown contour lines (lines of equal elevation above sea level). In steep mountainous areas, contours are closely spaced; in flatter areas, they are far apart. The elevation of any point on the map can be estimated by referring to the elevations of the contour lines above and below it.

General Information Product↗

USGS1991

Types of maps

This booklet lists some of the many types of maps and charts available from the Federal Government-from demographic maps to foreign aeronautical charts.

General Information Product↗