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Start Over Collection U.S. Geological Survey digital data series File Format Shapefile Bounding Box -40.000931 39.999015 -39.999064 40.000987

1. 2000 county boundaries of the United States

Datasets Harvard University Public content
1972. Geological Survey (U.S.). This map layer portrays the 2000 state and county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer was crea... U.S. Geological Survey.

2. Global GIS : 1995 National Oil and Gas Assessment - 1 mile cell data

Datasets Harvard University Public content
1996. Geological Survey (U.S.). The USGS Central Region Energy Team assessed the oil and gas resources of the United States. Cell maps for each oil and gas production area were cr... U.S. Geological Survey, Central Region Energy Team.

3. Global GIS : Airfields

Datasets Harvard University Restricted content
1997. United States. National Imagery and Mapping Agency. This datalayer is a point coverage representing airports and airfields worldwide and was published as part of the USGS Global GIS : global coverage... American Geological Institute.

4. Global GIS : Aqueducts, canals, flumes, penstocks

Datasets Harvard University Public content
1997. United States. National Imagery and Mapping Agency. This datalayer is a polyline coverage representing major roads worldwide and was published as part of the USGS Global GIS : global coverage databas... American Geological Institute.

5. Global GIS : Bailey equal-area grid

Datasets Harvard University Public content
2003. Environmental Systems Research Institute (Redlands, Calif.). This dataset is a polyline coverage representing the Bailey Equal-Area Grid. The Bailey Equal-Area Grid is an area-reference grid that uses meridia... American Geological Association.

6. Global GIS : Country political boundaries

Datasets Harvard University Restricted content
1997. United States. National Imagery and Mapping Agency. This datalayer is a polygon coverage representing country political boundaries worldwide and was published as part of the USGS Global GIS : global ... American Geological Institute.

7. Global GIS : Drainage Basins

Datasets Harvard University Public content
2003. EROS Data Center, Geological Survey (U.S), American Geological Institute, and Environmental Systems Research Institute (Redlands, Calif.). This datalayer is a polygon coverage representing hydrologic drainage basins located worldwide. The data displayed here is derived from the HYDRO 1... American Geological Institute.

8. Global GIS : Earthquake epicenters (1973-2003)

Datasets Harvard University Public content
1973. American Geological Institute, Geological Survey (U.S.), Environmental Systems Research Institute (Redlands, Calif.), National Earthquake Information Center, and National Geophysical Data Center. This datalayer is a point coverage representing earthquake epicenters (1973 through March, 2003). Historical data for this layer were derived from:... American Geological Institute.

9. Global GIS : Gazetteer of non-populated places, Western Hemisphere (excluding U.S.)

Datasets Harvard University Public content
2003. United States. National Geospatial-Intelligence Agency, Geological Survey (U.S.), American Geological Institute, and Environmental Systems Research Institute (Redlands, Calif.). This datalayer is a point coverage representing a gazetteer of non-populated place features located between the Greenwich meridian (0 degrees) and ... American Geological Institute.

10. Global GIS : Gazetteer of populated places, Western Hemisphere (excluding U.S.)

Datasets Harvard University Public content
2003. United States. National Geospatial-Intelligence Agency, Geological Survey (U.S.), American Geological Institute, and Environmental Systems Research Institute (Redlands, Calif.). This datalayer is a point coverage representing a gazetteer of populated place features located between the Greenwich meridian (0 degrees) and 180 ... American Geological Institute.