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2004. Instituto Nacional de Estadística, Geografía e Informática (Mexico), Geological Survey (U.S.), and Canada Centre for Remote Sensing. This polygon shapefile shows areas of coastline, and other hydrographic features in North America. This data set was produced using digital files s... Geological Survey (U.S.).
2009. Bay Area Open Space Council, Conservation Lands Network, San Francisco Bay Area Upland Habitat Goals Project, and GreenInfo Network (Firm). This polygon shapefile depicts a dissolve that was run on the hydrologic areas for the nine county San Francisco Bay Area Region, California. Hydro... Bay Area Open Space Council.
2009. Bay Area Open Space Council, Conservation Lands Network, San Francisco Bay Area Upland Habitat Goals Project, and GreenInfo Network (Firm). This polygon shapefile depicts a dissolve that was run on the Hydrologic Sub Areas for the nine county San Francisco Bay Area Region, California. H... Bay Area Open Space Council.
2009. Bay Area Open Space Council, Conservation Lands Network, San Francisco Bay Area Upland Habitat Goals Project, and GreenInfo Network (Firm). This polygon shapefile depicts hydrologic unit watersheds for the nine county San Francisco Bay Area Region, California. Hydrologic Units are those... Bay Area Open Space Council.
2017. Jasper Ridge Biological Preserve (Agency). This polygon shapefile represents hydrological features, including streams and drainage, in the San Francisquito Creek watershed, located in the Ja... Jasper Ridge Biological Preserve (Agency).
2019. Tehama County Public Works. This line shapefile represents hydrology features of Tehama County, California. This layer is presented in the WGS84 coordinate system for web disp... Tehama County Public Works.
2005. King, Philip B., Arndt, Raymond E., Schruben, Paul G., Bawiec, Walter J., and Beikman, Helen M. This point shapefile shows the locations of impact structures in the United States. An impact structure is a crater formed by the impact of a meteo... Geological Survey (U.S.) and National Atlas of the United States.
Bay Area Open Space Council, Conservation Lands Network, GreenInfo Network (Firm), and San Francisco Bay Area Upland Habitat Goals Project. The National Land Cover Database 2001 (NLCD) for mapping zone 03 was produced through a cooperative project conducted by the Multi-Resolution Land ... Bay Area Open Space Council.
2003 and 2004. Nature Kenya. This polygon shapefile depicts Important Bird Areas (IBAs) and their status in Kenya, 2003-2004. The data depicts each IBA by a point in the center... Birdlife International.
California Audubon Society. The objective of this project was to digitally map the boundaries of Audubon California's Important Bird Areas (IBA). Existing Important Bird Areas...