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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. 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.

3. Active Management and Irrigated Nonexpansion Areas, Arizona, 2002

2002. Arizona. Department of Water Resources. The dataset depicts both active management areas (AMAs) and Irrigated Nonexpansion Areas (INAs) in Arizona. Arizona Department of Water Resources.

4. Administrative Boundaries of National Park System Units, 2011

2011. United States. Bureau of Transportation Statistics. This polygon shapefile depicts service wide boundary set for display and general analysis purposes. This layer is part of the 2014 National Transpo... United States. Bureau of Transportation Statistics.

5. Agricultural Preserves: Santa Clara County, California, 2015

2015. Santa Clara County (Calif.). Planning Office. This polygon shapefile depicts 10 agricultural preserves located in unincorporated areas of the County of Santa Clara, California. According to Cal... Santa Clara County (Calif.). Planning Office.

6. Air Pollution Control District, Monterey County, California, 2015

2015. Monterey County (Calif.). This polygon shapefile represents the boundary of the Air Pollution Control District within Monterey County, California. This layer is part of a co... Monterey County (Calif.).

7. Anchorages, Northeast United States, 2013

2013. Baldwin Group. This polygon shapefile represents anchorages in the Northeastern United States. The areas described are designated as special anchorage areas for p... Coastal Services Center (U.S.).

8. Annual Growth of Biomass for Vegetation Outside of Croplands: Kenya, 2002

2002. This polygon shapefile depicts the annual growth of biomass outside of croplands as well as the theoretically harvestable biomass yield outside of ... World Resources Institute.

9. Annual Particulate Matter (Annual PM-2.5) Non-Attainment Designations in Region 9, 2011

2011. United States. Environmental Protection Agency, Region IX. This polygon shapefile contains designated areas for particulate matter < 2.5 microns, according to the annual National Ambient Air Quality Stan... United States. Environmental Protection Agency, Region IX.

10. Aquaculture, Northeast United States, 2014

2013. SeaPlan. This polygon shapefile represents aquaculture regions in the northeastern United States. Aquaculture in the northeast region is a diverse, vibrant ... Northeast Ocean Data.

11. Archaeological Sensitivity, Monterey County, California, 2015

2015. Monterey County (Calif.). This polygon shapefile contains areas of archaeological sensitivity within Monterey County, California. Archaeological sensitivity zones are those ... Monterey County (Calif.).

12. Areas of High Potential for Large Scale Solar Facilities, Arizona, 2014

2014. University of Arizona. Cooperative Extension. The REOA model approach used to generate this dataset incorporates two main objectives (physical and economic) and a range of sub-objectives to det... University of Arizona. Cooperative Extension.

13. Areas of High Potential for Small Scale Solar Facilities, Arizona, 2014

2014. University of Arizona. Cooperative Extension. The REOA model approach used to generate this dataset incorporates two main objectives (physical and economic) and a range of sub-objectives to det... University of Arizona. Cooperative Extension.

14. Areas of Land Subsidence, Arizona, 2014

2014. Arizona. Department of Water Resources. The Arizona Department of Water Resources Geophysics/Surveying Unit has been collecting and processing Interferometric Synthetic Aperature Radar (I... Arizona Department of Water Resources.

15. 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.

16. AZGS Earth Fissures Study Area, Arizona, 2015

2015. Arizona Geological Survey. This polygon shapefile displays the extents of the earth fissures study areas. A blank area on the map does not guarantee earth fissures are not pr... Arizona Geological Survey.

17. Bailey's Ecoregions and Subregions of the United States, 2004

2004. United States. Forest Service. This polygon shapefile is commonly called Bailey's ecoregions and shows ecosystems of regional extent in the United States, Puerto Rico, and the U.... National Atlas of the United States.

18. Bakersfield Sphere of Influence for Bakersfield, CA, 2006

2006. City of Bakersfield Sphere of Influence was adopted in January 2006. This dataset was created to aid in mapping applications to visualize the City'... Bakersfield (Calif.). Office of City Manager.

19. 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 ...

20. 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.