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1. Cambridge, MA (Paved Surfaces, 2006)

This layer shows paved surfaces, including roadways, edges of pavement, sidewalks, parking areas, driveways, bridges, alleys, and footpaths. There ... Cambridge (MA) Geographic Information System (City of Cambridge GIS).

2. Impervious Surfaces: San Francisco Bay Area, California, 2009

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.