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2009. World Wildlife Fund. This river network (stream lines) map for North America is derived from the flow direction map for North America. The flow accumulation map for Nor... 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 planning watersheds for the nine county San Francisco Bay Area Region, California. Pl... 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 watershed integrity cluster analysis at the CalWater 2.2.1 Planning Watershed (PWS) level was performed by mapping... 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 super planning watersheds for the nine county San Francisco Bay Area Region, Californ... Bay Area Open Space Council.