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3,603 parks
Grant-Kohrs Ranch National Historic Site
Montana
Wide open spaces, the hard-working cowboy, his spirited cow pony, and vast herds of cattle are among the stron…
Grapevine Lake
Oklahoma
Centrally located in the heart of the Dallas/Fort Worth Metroplex just minutes from DFW Airport, Grapevine Lak…
Grass Lake National Wildlife Refuge
Montana
Grass Lake National Wildlife Refuge (NWR) is a 3,279-acre Refuge, which also has a 399-acre flowage easement a…
Grass Valley Wilderness
California
The expansive Grass Valley covers nearly three-fourths of this Wilderness and ranks as its primary topographic…
Grasslands Wildlife Management Area
California
Grasslands Wildlife Management Area (WMA) was established in 1979 and is located in western Merced County, Cal…
Grassy Lake
Montana
Grassy Lake which is formed by Grassy Lake Dam is a major feature on the Mindoka Project. This 1,477-acre re…
Gravel Island National Wildlife Refuge
Michigan
Gravel Island (4 acres) and Spider Island (23 acres) comprise Gravel Island National Wildlife Refuge. These is…
Gray Peak Wilderness Study Area
Arizona
The Gray Peak WSA is located in southwestern New Mexico about 40 miles from Lordsburg. Through the center of t…
Gray Reef Reservoir
Wyoming
Gray Reef Dam, Glendo Unit, PSMBP, is on the North Platte River about 27 miles southwest of Casper, Wyoming an…
Gray's Reef National Marine Sanctuary
South Carolina
Gray Reef’s National Marine Sanctuary is an ocean park that protects a beautiful hard-bottom area that is one …
Grays Harbor National Wildlife Refuge
Washington
The first evidence of interest in protecting the mudflat habitat in Bowerman Basin was in 1985, at the Interna…
Grays Lake National Wildlife Refuge
Utah
Grays Lake NWR, created in 1965, is managed by the U.S. Fish and Wildlife Service (Service) to protect a porti…
Grayson Lake
Kentucky
Scenic sandstone rock cliffs rim the lake's 40 miles of shoreline. Hike the many trails and enjoy the wildlife…
Great Basin National Park
Nevada
From the 13,063-foot summit of Wheeler Peak to the sagebrush-covered foothills, Great Basin National Park host…
Great Bay National Estuarine Research Reserve
New Hampshire
Located on the New Hampshire and Maine border, Great Bay estuary is a complex embayment and New Hampshire's la…
Great Bay National Wildlife Refuge
New Hampshire
Established in 1992, Great Bay National Wildlife Refuge is located along the eastern shore of New Hampshire's …
Great Dismal Swamp National Wildlife Refuge
Maryland
The Great Dismal Swamp National Wildlife Refuge is the largest intact remnant of a vast forested wetland that …
Great Egg Harbor River
New Jersey
Both the harbor and river were named for the shorebird and waterfowl eggs covering their meadows. During the A…
Great Egg Harbor River
Pennsylvania
The River gradually widens as it picks up the waters of 17 tributaries on its way to Great Egg Harbor and the …
Great Falls Basin WSA
California
A perennial spring supplies the water flowing through a short distance in the Great Falls Basin Wilderness, an…
Great Falls Park
District of Columbia
At Great Falls, the Potomac River builds up speed and force as it falls over a series of steep, jagged rocks a…
Great Falls Park
Virginia
At Great Falls, the Potomac River builds up speed and force as it falls over a series of steep, jagged rocks a…
Great Rift Backcountry Area
Idaho
The Great Rift is one of only two such features in the world. At 635 square miles, it is considered to be the …
Great Rift ISA Wilderness Study Area
Idaho
The Great Rift lies in the Snake River Plain in south-central Idaho. Wildlife species here include antelope, m…