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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. 15 Degree Graticule, Northeast United States, 2010
2010. United States. National Oceanic and Atmospheric Administration, United States. National Ocean Service, United States. Department of Commerce, and Coastal Services Center (U.S.). This line shapefile displays graticules (grid lines of latitude parallels and longitude meridians) for the Northeastern United States at 15 degree ... Coastal Services Center (U.S.).
3. 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.
4. 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.
5. 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.
6. 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.
7. Air Monitoring Stations: California, 2001-2003
2001. Stephen P. Teale Data Center (Calif.). and California. Air Resources Board. Planning and Technical Support Division. This point shapefile represents all air monitoring stations active in California from 2001 until 2003. The data within the shapefile was obtained f... California. Air Resources Board.
8. 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.).
9. Albemarle 2007 Greenway Asphalt Path-existing
2000. Existing greenway asphalt paths for Albemarle County, Virginia.
10. Albemarle 2007 Greenway: Asphalt Paths-proposed
2000. Proposed greenway asphalt paths for Albemarle County, Virginia.
11. Albemarle 2007 Greenway Bikelanes-proposed
2000. Proposed greenway bikelanes for Albemarle County, Virginia.
12. Albemarle 2007 Greenway BikePed Trail-existing
2000. Existing bike-pedestrian combination trails for Albemarle County, Virginia.
13. Albemarle 2007 Greenway Boat Access
2000. Greenway boat access for Albemarle County, Virginia.
14. Albemarle 2007 Greenway Bridges
2000. Greenway bridges for Albemarle County, Virginia.
15. Albemarle 2007 Greenway: Class A Trails-proposed
2000. Proposed greenway class A trails for Albemarle County, Virginia.
16. Albemarle 2007 Greenway Class B Trails-existing
2000. Existing greenway class B trails for Albemarle County, Virginia.
17. Albemarle 2007 Greenway: Class B Trails-proposed
2000. Proposed greenway class B trails for Albemarle County, Virginia.
18. Albemarle 2007 Greenway: Crozet Master Plan
2000. Greenway: Crozet master plan for Albemarle County, Virginia.
19. Albemarle 2007 Greenway: G1 Public Access Points with Facilities
2000. Greenway: G1 public access points with facilities for Albemarle County, Virginia.
20. Albemarle 2007 Greenway: G2 Public Access Points
2000. Greenway: G2 public access points for Albemarle County, Virginia.
21. Albemarle 2007 Greenway: G3 Neighborhood Access Points
2000. Greenway: G3 neighborhood access points for Albemarle County, Virginia.
22. Albemarle 2007 Greenway: Generalized Boat Access
2000. Greenway: generalized boat access for Albemarle County, Virginia.
23. Albemarle 2007 Greenway: Meadowcreek Access
2000. Greenway: Meadowcreek access for Albemarle County, Virginia.
24. Albemarle 2007 Greenway: Multiuse Trails-existing
2000. Existing greenway multiuse trails for Albemarle County, Virginia.
25. Albemarle 2007 Greenway: Multiuse Trails-proposed
2000. Proposed greenway multiuse trails for Albemarle County, Virginia.
26. Albemarle 2007 Greenway: offriver trails - proposed
2000. Proposed greenway offriver trails for Albemarle County, Virginia.
27. Albemarle 2007 Greenway Sidewalks-existing
2000. Existing greenway sidewalks for Albemarle County, Virginia.
28. Albemarle 2007 Greenway: Sidewalks-proposed
2000. Proposed greenway sidewalks for Albemarle County, Virginia.
29. Albemarle 2007 Ragged Mtn Natural Area
2000. Ragged mountain natural area in Albemarle County, Virginia.
30. Albemarle 2007 Shenandoah National Park
2000. Shenandoah National Park in Albemarle County, Virginia.
31. Albemarle 2010 Open Use Agreement Areas
2010. Open use agreement areas in Albemarle County, Virginia.
32. Albemarle 2010 Park Parcels
2010. Park parcels in Albemarle County, Virginia.
33. Albemarle 2010 Ragged Mountain Natural Area
2010. Ragged Mountain natural area in Albemarle County, Virginia.
34. Albemarle 2010 Scenic Streams Overlay
2010. Scenic stream overlays in Albemarle County, Virginia.
35. Albemarle 2010 Shenendoah National Park
2010. Shenendoah National Park in Albemarle County, Virginia.
36. Alexandria 2004 Parks
0. Parks for Alexandria, Virginia.
37. Amphibian and Reptile Specimen Provenances: 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). The University of California, Berkeley Museum of Vertebrate Zoology (MVZ) collection of amphibians and reptiles contains over 265,000 catalogued sp... Bay Area Open Space Council.
38. 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.).
39. 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.
40. 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.
41. 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.
42. 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.).
43. 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.
44. 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.
45. 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.
46. Arlington 2003 Future Parks
1991. Future parks for Arlington, Virginia.
47. Arlington 2003 Northern Virginia Regional Park Authority Areas
1991. Northern Virginia Regional Park Authority areas for Arlington, Virginia.
48. Arlington 2003 Park Playgrounds
1991. Park playgrounds for Arlington, Virginia.
49. Arlington 2003 Private Open Space
1991. Private open space for Arlington, Virginia.
50. Arlington 2003 Public Parks
1991. Public parks for Arlington, Virginia.