The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government.The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization's work spans the disciplines of biology, geography, geology, and hydrology.

The longest rivers of the United States include 38 that have main stems of at least 500 miles (800 km) long. The main stem is "the primary downstream segment of a river, as contrasted to its tributaries". The United States Geological Survey (USGS) defines a main-stem segment by listing coordinates for its two end points, called the source and the mouth.

Shale gas in the United States is an available source of natural gas.Led by new applications of hydraulic fracturing technology and horizontal drilling, development of new sources of shale gas has offset declines in production from conventional gas reservoirs, and has led to major increases in reserves of U.S. natural gas.Largely due to shale gas discoveries, estimated reserves of …

The USGS (United States Geological Survey) is a science bureau within the United States Department of the Interior. The USGS provides science about the natural hazards that threaten lives and livelihoods; the water, energy, minerals, and other natural resources we rely on; the health of our ecosystems and environment; and the impacts of climate and land-use change.

On June 30, 1940, the Bureau of Fisheries and the Bureau of Biological Survey were combined to form the Department of the Interior′s Fish and Wildlife Service.In 1956, the Fish and Wildlife Service was reorganized as the United States Fish and Wildlife Service — which remained part of the Department of the Interior — and divided its operations into two bureaus, the …

The USBR is also the second largest producer of hydroelectric power in the western United States. On June 17, 1902, in accordance with the Reclamation Act, Secretary of the Interior Ethan Allen Hitchcock established the U.S. Reclamation Service within the U.S. Geological Survey (USGS). The new Reclamation Service studied potential water ...

The prehistory of the United States comprises the occurrences within regions now part of the United States during the interval of time spanning from the formation of the Earth to the documentation of local history in written form. ... Indiana Geological Survey, Department of Natural Resources. Accessed August 2, 2012. Everhart, M. J. 2005.

The United States Department of the Interior (DOI) is one of the executive departments of the U.S. federal government headquartered at the Main Interior Building, located at 1849 C Street NW in Washington, D.C. It is responsible for the management and conservation of most federal lands and natural resources, and the administration of programs relating to Native Americans, Alaska …

The United States government spends an estimated $1 billion annually to recover from the invasive Formosan termite, investing $1 billion of this budget in areas surround New Orleans, a major port city. Estimates of total yearly costs controlling invasive species range from $1.1 billion to $137 billion per year.

The Geographic Names Information System (GNIS), developed by the U.S. Geological Survey (USGS) in cooperation with the U.S. Board on Geographic Names (BGN), contains information about the official names for places, features, and areas in the 50 States, the District of Columbia, the territories and outlying areas of the United States, including ...