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Start Over Subject Hydrology Publisher American Geological Institute Bounding Box -40.000931 39.999015 -39.999064 40.000987

1. 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.

2. 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.