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1. Massachusetts (Certified Vernal Pools, 2006)
Natural Heritage and Endangered Species Program. This datalayer contains points for all vernal pools that have been certified by the Natural Heritage & Endangered Species Program (NHESP) according... MassGIS (Office : Mass.).
2. Massachusetts (NHESP Certified Vernal Pools, 2003)
MassGIS (Office : Mass.). This datalayer contains points for all vernal pools that have been certified by the Natural Heritage & Endangered Species Program (NHESP) according... Massachusetts.
3. Massachusetts (Potential Vernal Pools, 2000)
MassGIS (Office : Mass.). This datalayer identifies the locations of more than 29,000 potential, unverified, vernal pool habitats. Vernal pools are small, shallow ponds char... MassGIS (Office : Mass.).
4. Vernal Pool Complexes: San Francisco Bay Area, California, 1998
2008. Bay Area Open Space Council, Conservation Lands Network, San Francisco Bay Area Upland Habitat Goals Project, GreenInfo Network (Firm), U.S. Fish and Wildlife Service, and Dr. Robert F. Holland. This polygon shapefile depicts existing vernal pool complexes, not individual vernal pools, in the nine county San Francisco Bay Area Region, Calif... Bay Area Open Space Council.
5. Vernal Pools: Central Valley, California, 1998
1998. Holland Ph.D., Robert F., U.S. Fish and Wildlife Service, and California. Department of Fish and Wildlife. This polygon shapefile depicts the distribution of extant California Central Valley vernal pool complexes for use by the United States Fish and Wil... California. Department of Fish and Game. Marine Resources Region.
6. Vernal Pools: Holland's Central Valley, Russian River Basin, California, 1998
1999. Circuit Rider Productions. This polygon shapefile was derived from the U.S. Fish and Wildlife Service and California Department of Fish and Game's Holland's Central Valley Ve... Circuit Rider Productions.
7. Vernal Pools: Placer County, California, 1999-2000
2000. North Fork Associates. This polygon shapefile depicts the distribution of extant vernal pool complexes in Placer Country for use by the United States Fish and Wildlife Se... California. Department of Fish and Game. Marine Resources Region.
8. Vernal Pools Regions: California, 1998
1998. This polygon shapefile depicts boundaries for vernal pool regions throughout California.This coverage is a polygon layer of vernal pool complexes i... California. Department of Fish and Game. Marine Resources Region.
9. Vernal Pools: South Coast Ranges, California, 1998
2003. Holland, Ph.D., Robert F. This polygon shapefile depicts vernal pools in Monterey, Santa Barbara, San Benito, San Luis Obispo and Ventura counties that were mapped from one-... California. Department of Fish and Game. Marine Resources Region.
10. Vernal Pools Study Area: Central Valley, California, 1998
1998. Holland, Ph.D., Robert F., U.S. Fish and Wildlife Service, and California. Department of Fish and Wildlife. This polygon shapefile is believed to represent a boundary used for mapping vernal pool complexes in a study by Dr. Robert F. Holland (reference th... California. Department of Fish and Game. Marine Resources Region.