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Description
Keyhole State Park is located in Northeast Wyoming on the edge of the Black Hills. The park features a 14,000 surface-acre reservoir created by the Keyhole Dam and 2,000 acres of land surrounding the reservoir. The combination of large reservoir, grasslands, and some woodland attracts a diversity of birds.
More than 200 species of birds can be found in the area. Some of the most commonly observed species in the summer months include the Wild Turkey, American White Pelican, Osprey, Western Meadowlark, Vesper Sparrow and Savannah Sparrow. Some of the most commonly observed species in the winter months include Bald Eagle, Red-breasted Nuthatch, White-breasted Nuthatch, and Red Crossbill. In areas with low water levels you can find waders like American Avocet, Spotted Sandpiper, Killdeer, Greater Yellowlegs and Stilt Sandpiper.
Details
Access
Keyhole State Park is located near Moorcroft in northeastern Wyoming. The park is along Wyoming Highway 24, which connects to larger highways like I-90, making it reachable by road from nearby cities such as Gillette or Rapid City. Press a P on the map for directions to a parking. The daily use fee to enter Keyhole State Park is $ 7 per vehicle for Wyoming residents. For non-residents, the fee is $ 12 per vehicle (2026).
There is a fullyaccessible concrete trail running from Park Headquarters to the Marina (1.65 miles). There are also several natural terrain, single-track trails throughout the park which include the Coulter Bay Recreational Trail (3 miles), Cottonwood Trail (2.79 miles), and Little Keyhole Trail (1 mile).
Camping is available year-round at Keyhole State Park with over 300 campsites for both RVs and tents spanning across 10 campgrounds. Reservations are required for most campsites during the recreation season of May 1st through September 31st.
Terrain and Habitat
Forest , Scattered trees and bushes , Grassland , LakeConditions
Hilly , Open landscapeCircular trail
NoIs a telescope useful?
Can be usefulGood birding season
All year roundBest time to visit
SpringRoute
Paved road , Wide pathDifficulty walking trail
EasyAccessible by
Foot , Bicycle , Car , BoatBirdwatching hide / platform
NoExtra info
Bird banding events take place in Keyhole State Park each year during the summer in conjunction with Audubon Rockies at which birds can be observed up close. Banding starts the last week of May and ends in early August. See the link below for more info.