-
USGS US Topo Map Collection
Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, boundaries,... -
Bathymetry Data for Portions of Lower Granite Reservoir and Vicinity, Washing...
During autumn 2009 and winter 2010, the U.S. Geological Survey (USGS), in cooperation with the U.S. Army Corps of Engineers (USACE), conducted a hydrographic survey using a...
E' possibile inoltre accedere al registro usando le API (vedi Documentazione API).