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1. 1:1,000,000-Scale National Wilderness Preservation System of the United States, 2014

2014. National Atlas of the United States. This polygon shapefile consists of National Wilderness Preservation System areas of 320 acres or more, in the United States, Puerto Rico, and the U... National Atlas of the United States.

2. 1:1,000,000-Scale Waterbodies and Wetlands of the United States, 2014

2014. Geological Survey (U.S.). This polygon shapefile represents waterbodies and wetlands of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer was produc... Geological Survey (U.S.).

3. 6-Digit Accounting Units, Hydrologic Units: Indiana

2002. United States Geological Survey. WATERSHEDS_HUC06_USGS_IN is a polygon shapefile showing the boundaries of accounting units (HUA) in Indiana. Accounting units are noted by a 6-digi...

4. Abundance Estimates of the Pacific Salmon Conservation Assessment Database, 1978-2008

1978. Pinsky, Malin L., Springmeyer, Dane B., Goslin, Matthew N., and Augerot, Xanthippe. This dataset is a visualization of abundance estimates for six species of Pacific salmon (Oncorhynchus spp.): Chinook, Chum, Pink, Steelhead, Socke... Stanford Digital Repository.

5. Active and Dormant Landslides, Elk River Watershed, California, 1940-2000

1940. California Geological Survey, California. Department of Conservation, Marshall, Gerald, and Mendes, Eric. This polygon shapefile depicts active and dormant landslides within the Elk River watershed in Humboldt County, California. This layer does not inc... California Geological Survey.

6. Alluvial contacts (Units): Albion River Watershed, California, 2000

2000. California Geological Survey. This polygon shapefile depicts alluvial contacts in the Albion Watershed region of Mendocino County, California. Alluvail contacts are unconsolidat... California Geological Survey.

7. Annual Projected Water Balance by Subdrainage Area in Kenya, 2000 and 2010

2000. World Resources Institute. This polygon shapefile portrays annual projected water balance by subdrainage area in Kenya for 2000 and 2010. The data was taken from the Kenya Na... World Resources Institute.

8. Antarctic Ice Shelf Areas, 1:10 million (2012)

2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polygon shapefile depicts year-round ice shelves in Antarctica. Data was derived from the MODIS 2003-2004 Mosaic of Antarctica, but reflects m... North American Cartographic Information Society.

9. Antarctic Ice Shelf Areas, 1:50 million (2012)

2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polygon shapefile depicts the edges of year-round ice shelves fringing Antarctica. Data was generalized from 10m Antarctic ice shelves derived... North American Cartographic Information Society.

10. Average Water Consumption by Livestock and Wildlife by Subdrainage Area, Kenya, 1994-1996

1994. World Resources Institute. This polygon shapefile represents the average water consumption of livestock and wildlife by sub-basin in Kenya for 1994-96. The greatest water dem... World Resources Institute.

11. Bathymetric Contours for Selected Lakes: Indiana

2012. Indiana Department of Natural Resources, Division of Fish and Wildlife. LAKE_BATHYMETRY_IDNR_IN.SHP provides bathymetric contours for the following 85 lakes in Indiana, with depths calculated from the average shoreline ...

12. Baylands Boundary: San Francisco Bay Area, California, 1999

1999. Bay Area Open Space Council, Conservation Lands Network, San Francisco Bay Area Upland Habitat Goals Project, and GreenInfo Network (Firm). This polygon shapefile represents the edge of the baylands boundary, as published in the San Francisco Estuary Institute's Eco Atlas released in 19... Bay Area Open Space Council.

13. Bodies of Water: Sacramento County, California, 2015

2015. Sacramento County GIS. This polygon shapefile depicts boundaries of bodies of water in the County of Sacramento, California, including canals, dams, the Delta, ponds, res... Sacramento County GIS.

14. Bodies of Water: San Francisco Bay Area, California, 2011

2011. Bay Area Open Space Council, Conservation Lands Network, San Francisco Bay Area Upland Habitat Goals Project, and GreenInfo Network (Firm). This polygon shapefile depicts bodies of water in the nine county San Francisco Bay Area Region, California, onto which other thematic data can be ... Bay Area Open Space Council.

15. Bodies of Water: Santa Clara County, California, 2015

2015. Santa Clara Valley Water District (Calif.). This polygon shapefile depicts boundaries of Bodies of Water in the County of Santa Clara, California, including reservoirs, lakes, percolation pon... Santa Clara Valley Water District (Calif.).

16. Bodies of Water: Santa Cruz County, California, 2015

2015. Garcia, Paul and Price, Matt. This polygon shapefile represents bodies of water, including lakes, lagoons, and reservoirs, and harbors, in the County of Santa Cruz, California. ... County of Santa Cruz Information Services Department.

17. Boundaries: Noyo River Watershed, California, 2000

2000. California. Division of Mines and Geology. This polygon shapefile displays the boundaries of the Noyo River Watershed, which lies within the Coast Ranges physiographic province of California... California. Division of Mines and Geology.

18. Boundary: San Francisco Bay, California 2011

2011. Bay Area Open Space Council, GreenInfo Network (Firm), Conservation Lands Network, and San Francisco Bay Area Upland Habitat Goals Project. This polygon shapefile depicts the boundary of the San Francisco Bay in California, including San Pablo Bay and the Carquinez Straight, onto which ... Bay Area Open Space Council.

19. Bulletin 118 - Groundwater Basins and Subbasins, California, 2003

2003. California. Department of Water Resources. The polygon shapefile contains the boundaries of 515 groundwater basins and subbasins as defined by the California Department of Water Resources (B... California. Department of Water Resources.

20. Bulletin 118 - Groundwater Basins and Subbasins, California, 2016

2016. California. Department of Water Resources. This polygon shapefile contains the boundaries of 517 groundwater basins and subbasins as defined by the California Department of Water Resources a... California. Department of Water Resources.

21. California Coastal Commission Appeal Areas, Monterey County, California, 2015

2015. Monterey County (Calif.). This polygon shapefile contains areas within Monterey County where appeals can be submitted to the California Coastal Commission (CCC). The Califor... Monterey County (Calif.).

22. Carmel Bay Watersheds, Monterey County, California, 2015

2015. Monterey County (Calif.). This polygon shapefile contains the boundaries of the Carmel Bay (ASBS), Sawmill Gulch, and Seal Rock, watersheds in Monterey County, California. T... Monterey County (Calif.).

23. CASGEM Groundwater Basin Prioritization, 2014

2014. California. Department of Water Resources. This polygon shapefile depicts areas identified basin prioritization areas within California. At the time of the study (June 2014), Final Basin Pri... California. Department of Water Resources.

24. Cataloging Units, 8-digit,Hydrologic Units: Indiana

2002. United States Geological Survey. WATERSHEDS_HUC08_CATALOG_UNITS_USGS_IN is a polygon shapefile showing the boundaries of cataloging units in Indiana. Cataloging units are noted by ...

25. Category One Stream Buffers: Santa Clara County, California, 2015

2015. Santa Clara County (Calif.). Planning Office. This polygon shapefile depicts habitat plan category one stream buffers in the County of Santa Clara, California. According to the California State... Santa Clara County (Calif.). Planning Office.

26. Census Hydrographic Features, 2000 - San Francisco Bay Area, California

2000. California. Metropolitan Transportation Commission. This polygon shapefile displays the hydrographic features throughout the San Francisco Bay Area of California. This category includes shorelines of... California. Metropolitan Transportation Commission.

27. Census Landmark Polygon Features, 2000 - San Francisco Bay Area, California

2000. California. Metropolitan Transportation Commission and U.S. Department of Commerce, Bureau of the Census, Geography Division. This polygon shapefile displays landmark features throughout the San Francisco Bay Area in California. "Landmark" is the general name given to a ca... California. Metropolitan Transportation Commission.

28. Census Water Bodies, 2000 - San Francisco Bay Area, California

2000. California. Metropolitan Transportation Commission. This polygon shapefile displays water bodies in the San Francisco Bay area of California. This category includes lakes, ponds, bays, rivers, reserv... California. Metropolitan Transportation Commission.

29. Coastal Wetlands, Northeast United States, 1977-2014

1977. U.S. Fish and Wildlife Service. This polygon shapefile represents the extent, approximate location and type of wetlands and deepwater habitats in the Northeastern United States be... U.S. Fish and Wildlife Service.

30. Debris Slide Slope Regions: Albion River Watershed, California, 1984-2000

1984. California Geological Survey. This polygon file depicts debris slide slope geomorphic features, defined as coalesced scars of debris flows and debris slides, within the Albion R... California Geological Survey.

31. Debris Slide Slopes, Elk River Watershed, California, 1940-2000

1940. California Geological Survey, California. Department of Conservation, Marshall, Gerald, and Mendes, Eric. This polygon shapefile depicts debris slide slopes within the Elk River watershed in Humboldt County, California. This dataset is the product of th... California Geological Survey.

32. Dike Failure Flooding Hazard Zones: Santa Clara County, California, 2015

2015. Santa Clara County (Calif.). Planning Office. This polygon shapefile depicts dike failure flooding hazard zones in the unincorporated areas of the County of Santa Clara, California. This layer ... Santa Clara County (Calif.). Planning Office.

33. Disrupted Ground Regions: Albion River Watershed, California, 1983-1984

1983. California Geological Survey. This polygon file depicts disrupted ground regions within the Albion River watershed in Mendocino County, California. Disrupted ground consists of ... California Geological Survey.

34. Disrupted Ground Regions, Elk River Watershed, California, 1940-2000

1940. California Geological Survey, California. Department of Conservation, Marshall, Gerald, and Mendes, Eric. This polygon shapefile depicts disrupted ground within the Elk River watershed in Humboldt County, California. Disrupted ground consists of debris ... California Geological Survey.

35. Distance to Nearest Roads in Watersheds: San Francisco Bay Area, California, 2009

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.

36. Eight-digit Subbasin Watershed Boundaries: Indiana

2011. United States Department of Agriculture. The following is extracted from USDA, NRCS metadata -- "This data set, part of the Watershed Boundary data set (WBD), is a complete digital hydrol...

37. European Lakes, 1:10 million (2012)

2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polygon shapefile depicts natural and artificial lakes for Europe only ranked by relative importance, coordinating with river ranking. Include... North American Cartographic Information Society.

38. Federal Lands of the United States, 2006

1972. National Atlas of the United States. This polygon shapefile contains federally owned or administered lands of the United States, Puerto Rico, and the U.S. Virgin Islands. Only areas of... National Atlas of the United States.

39. Felt Reservoir, Jasper Ridge Biological Preserve, 2017

2017. Jasper Ridge Biological Preserve (Agency). This polygon shapefile represents Felt Reservoir in the Jasper Ridge Biological Preserve (JRBP), Woodside, California. This layer is part of a coll... Jasper Ridge Biological Preserve (Agency).

40. FEMA Flood Zones: San Francisco Bay Area, California, 2001

2001. Bay Area Open Space Council, Conservation Lands Network, San Francisco Bay Area Upland Habitat Goals Project, and GreenInfo Network (Firm). This polygon shapefile depicts Q3 Flood Data features of FEMA's Flood Insurance Rate Map (FIRM) product for the nine county San Francisco Bay Area ... Bay Area Open Space Council.

41. FIRM Floodplains and Flood Hazard Zones: Indiana

2017. Indiana Department of Natural Resources. This polygon layer represents floodplains created from FEMA Flood Rate Insurance Maps (FIRM). The layer is symbolized to show the following flood h...

42. Flood Control Agency Boundary Map, San Joaquin County, California, 2015

2015. San Joaquin County (Calif.). Community Development Department. This polygon shapefile represents the boundary of the San Joaquin Area Flood Control Agency (SJAFCA) as of July 2015. The SJAFCA's mission is to st... San Joaquin County (Calif.). Community Development Department.

43. Flood Control Districts: Santa Cruz County, California, 2015

2015. Garcia, Paul and Price, Matt. This polygon shapefile represents flood control districts 5, 6, 7 and 8 in the County of Santa Cruz, California. The specific services flood distri... County of Santa Cruz Information Services Department.

44. Flood Control Zones: Santa Clara County, California, 2015

2015. Santa Clara Valley Water District (Calif.). This polygon shapefile depicts boundaries of the Flood Control Zones in the County of Santa Clara, California over which the Santa Clara Valley Wat... Santa Clara Valley Water District (Calif.).

45. Flood Insurance Rate Map: Santa Cruz County, California, 2015

2012. Garcia, Paul and Price, Matt. This polygon shapefile contains the Federal Emergency Management Agency (FEMA) Flood Insurance Rate Map (FIRM) for streams in the County of Santa C... County of Santa Cruz Information Services Department.

46. Flood Zones and Floodways: Humboldt County, California, 2015

2015. von Dohlen, Jerry. This polygon shapefile depicts Modified Federal Emergency Management Agency (FEMA) Q3 Flood Data merged with Floodway Data. This coverage displays ... Humboldt County Planning and Building Department.

47. Flooding, Seine River, Paris, 1740

1740. Mirlou, Laurent. This polygon shapefile shows the areas innundated by the centinnial flood of the Seine River in Paris, France during 1740. This layer distinguishes... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

48. Flooding, Seine River, Paris, 1910

1910. Mirlou, Laurent. This polygon shapefile shows the areas innundated by the centinnial flood of the Seine River in Paris, France during 1910. This layer distinguishes... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

49. Floodplain: Ann Arbor, Michigan, 2012

2012. That portion of the river valley, adjacent to the channel, which is built of sediments deposited during the present geological / climatic regime. B...

50. Floodplain: Baltimore, Maryland

2014. City of Baltimore, Maryland. Polygon feature representing flood risk as defined by the FEMA Digital Flood Insurance Rate Map database. Last Updated 2014.