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21. Carbon Monoxide: California State Area Designations, 2008-2011

2008. California. Air Resources Board. Planning and Technical Support Division and United States. Environmental Protection Agency. This polygon shapefile contains area designations of carbon monoxide (CO) levels in California as required under Health and Safety Code section 396... California. Air Resources Board.

22. Chipmunk Range (Reverse Polygon Mask): San Francisco Bay Area, California, 2008

2008. Bay Area Open Space Council, Conservation Lands Network, San Francisco Bay Area Upland Habitat Goals Project, and GreenInfo Network (Firm). This polygon shapefile depicts the range map the chipmunk that were pulled out and then reversed so the polygon represents areas outside of their r... Bay Area Open Space Council.

23. City Boundaries: Solano County, California, 2008

2008. Armstrong, Jake H. This polygon shapefile depicts city boundaries over which the County of Solano, California holds authority: Benicia, Dixon, Fairfield, Rio Vista, S... Solano County Department of Information Technology.

24. County Boundary: San Mateo County, California, 2008

2008. County of San Mateo Information Services Department. This polygon shapefile depicts the county boundary for San Mateo County in California. This layer is part of a collection of GIS data for San Mateo... County of San Mateo Information Services Department.

25. Cultivated Lands: San Francisco Bay Area, California, 2008

2008. Bay Area Open Space Council, Conservation Lands Network, San Francisco Bay Area Upland Habitat Goals Project, and GreenInfo Network (Firm). This polygon shapefile depicts cultivated lands in the nine county San Francisco Bay Area Region, California. This data was derived from the Califo... Bay Area Open Space Council.

26. Detailed World Polygons (LSIB) Europe and Southwest Asia, 2013

2008. United States. Department of State. Office of the Geographer. This polygon shapefile contains the boundaries of countries in Europe and southwest Asia. This layer, created by the Office of the Geographer, comb... United States. Department of State. Office of the Geographer. Humanitarian Information Unit.

27. Districts: California Department of Fish and Wildlife, 2008

2008. California. Biogeographic Data Branch. This polygon shapefile depicts boundaries of the California Department of Fish and Wildlife Districts. Various data sources were used to represent ... California. Department of Fish and Game. Marine Resources Region.

28. Europe: Drainage Directions, 15s resolution, 2008

2008. World Wildlife Fund (WWF). This drainage direction map for Europe defines the direction of flow from each cell in the conditioned digital elevation model to its steepest down... U.S. Geological Survey.

29. Europe: Drainage Directions, 30s resolution, 2008

2008. World Wildlife Fund (WWF). This drainage direction map for Europe defines the direction of flow from each cell in the conditioned digital elevation model to its steepest down... U.S. Geological Survey.

30. Europe: Flow Accumulation, 15s resolution, 2008

2008. World Wildlife Fund (WWF). HydroSHEDS (Hydrological data and maps based on SHuttle Elevation Derivatives at multiple Scales)flow accumulation maps define amount of upstream a... U.S. Geological Survey.