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Federal
USGS Groundwater Data for the Nation - National Water Information System (NWIS)
Department of the Interior —
The USGS compiles online access to water-resources data collected at approximately 1.5 million sites in all 50 States, the District of Columbia, Puerto Rico, the... -
Federal
Aerial Images of Alaska's Arctic Coastal Plain, 1974-1979
Department of the Interior —
This dataset is comprised of 11 geo-referenced aerial images of two study areas (Teshekpuk Lake Special Area and the Chipp River) in the National Petroleum Reserve -... -
Federal
Aerial Images of Alaska's Arctic Coastal Plain, 1948-1949
Department of the Interior —
This dataset is comprised of 35 geo-referenced aerial images of four study areas (Teshekpuk Lake Special Area, Chipp River, Colville River Delta, and Dalton Highway... -
Federal
Aerial Image of Alaska's Arctic Coastal Plain, 1955
Department of the Interior —
This dataset is comprised of one geo-referenced aerial image from the National Petroleum Reserve - Alaska (NPRA) on Alaska's Arctic Coastal Plain taken on 21 June... -
Federal
Flight Path GPS Logs and Browse Maps of Low-Altitude Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013
Department of the Interior —
This dataset contains GPS waypoint logs and browse maps of the aircraft flight paths used during low altitude photo survey transects in northwest Alaska, July 2013....