Keyhole State Park


Keyhole State Park

Keyhole State Park, Wyoming

Keyhole State Park

Includes Keyhole Reservoir

Keyhole State Park is located in northeastern Wyoming along the western edge of the legendary Black Hills.  Resting between the Wyoming towns of Sundance and Moorcroft, it is easily accessed off of Interstate 90.  Just south of Devils Tower National Monument, Keyhole State Park resides along the southeast shore of Keyhole Reservoir, which is a mecca for incredible bird migrations of numerous species.

Keyhole State Park is also a very popular destination for outdoor enthusiasts who enjoy all types of water sports- including fishing, boating, swimming, canoeing and kayaking.

There are also many hiking opportunities throughout the area, and there are nine campgrounds found in Keyhole State Park that overlook the lake.

Keyhole State Park of Wyoming is a popular place for boating enthusiasts.

Keyhole State Park, Wyoming

Water Sports / Marina

Keyhole Reservoir is 14,000 acres in size, and it's just waiting for you to jump in and enjoy.  This large lake is great for water skiing, cruising, canoeing, kayaking, wind surfing, swimming, snorkeling and much more.
And with nine campgrounds throughout Keyhole State Park and a marina, Keyhole Reservoir is a popular destination for all types of water sport enthusiasts.

There is a privately owned marina that provides gas, groceries, fishing supplies, showers, boat rentals and propane.  There are also ten camp sites located next to the marina that has electric hookups.


Keyhole State Park and Keyhole Reservoir is home to outstanding sport fishing opportunities.  Walleye, Northern Pike, Small Mouth Bass and Catfish live in these waters, and provide fisherman and women with outstanding opportunities for an enjoyable fishing experience.... whether it be from the shore or from a boat.

Keyhole State Park Marina, Wyoming

Bird Migrations / Bird Watching

Keyhole State Park and Keyhole Reservoir are renowned for the extension bird migrations that occur here. Over 200 species of migratory and domestic birds can be found in this popular bird watching area, and is
considered to be a first-class bird watching experience.  So if you enjoy "birding", then you really should consider spending some time at Keyhole State Park and Reservoir.  In addition to birds, there is a wide variety of other animals found throughout Keyhole State Park, such as mule deer, pronghorns, whitetail deer, foxes, coyotes, and much more.

Sioux Indian Heritage

Downstream from the Yellowtail Dam, the Bighorn River has become one of the highest rated trout streams in the country.  The water is crystal clear due to the dam, and because the height of the water can be regulated, this magical section of Sioux Indian Heritage
There is a very strong, deep rooted Sioux Heritage that is evident throughout the Keyhole State Park Area. There are several places to learn more about this proud Native American heritage, such as the nearby attractions Campbell County Rockpile Museum in nearby Gillette, the iconic Devils Tower National Monument, which by the way can be seen from Keyhole State Park, and the fascinating Vore Buffalo Jump.the fabled Bighorn River is legendary, and is the most fished river in Montana.  Fly fisherman from around the world flock to this world class fishery, where there are an upward of 11,000 trout per river mile.  Therefore, what was once a muddy stream with poor fishing opportunities, is now one of the top blue ribbon trout streams for brown and rainbow trout in North America.

Nine Campgrounds!

Keyhole State Park hosts nine campgrounds that overlook Keyhole Reservoir, so if you like camping, you've found a great place to pitch your tent or unhitch your trailer, or park your RV.  In all, there are over 170 sites available with grills and tables, and most sites can accommodate large RVs and trailers. There are also primitive campsites that are ideal for tenters who want to get away from it all.

Keyhole State Park, Wyoming

Keyhole State Park provides excellent camping opportunities.

Keyhole State Park, WyomingArch Rock Campground
Found mostly in pine trees, this Keyhole State Park campground has 14 campsites, all with fire rings and
picnic tables.  There are restrooms and water hydrants found throughout the campground.  There is easy access to the lake from the Arch Rock Campground.

Tatanka Campground (Cabins Available Here)
There are 33 campsites with water and electric hookups located at the Tatanka Campground, all of which require reservations from mid-May to mid-September.  There are also 12 tent campsites and 4 camping cabins available here.  Tatanka Campground provides easy access to Keyhole Reservoir.

Pronghorn Campground
36 campsites are available at the Pronghorn Campground as well as a large playground for children.  Most sites are back-in, but there are also a few pull-throughs.  Mainly nestled in pine trees, these campsites provide more difficult access to Keyhole Reservoir due to the surrounding terrain.

Beach Area Campground
7 sites are available at the Beach Area Campground, and they are not developed.  Therefore the ground is not level, and there is no pads provided.  There are fire rings and picnic tables at each site, as well as a restroom and water hydrant close by.  All of these sites provide easy access to Keyhole Reservoir, and most are in pine trees.

Pat's Point Campground
33 sites are found at Pat's Point Campground, some developed and some on grass.  There is a public boat ramp located in the area when Keyhole Reservoir is full.

Homestead Campground
A fair distance away from Keyhole Reservoir, the Homestead Campground has 40 campsites with gravel pads and 3 universal sites with cement pads. Most sites are back-ins.

Cottonwood Campground
There are 31 undeveloped campsites at the Cottonwood Campground with fire rings, picnic tables, and water hydrants found throughout the campground.  There is no easy access to the Keyhole Reservoir at this particular campground, but all sites are surrounded by pine trees.

Rocky Point Campground
There are 16 undeveloped campsites at the Rocky Point Campground, with picnic tables and fire rings. There are water hydrants and restrooms throughout the campground, and there is easy access to the Keyhole Reservoir.

Wind Creek Campground
15 undeveloped campsites are located at the Wind Creek Campground, all with fire rings and picnic tables.  There are restrooms available, but NO drinking water.  There is a public boat ramp in the area when Keyhole Reservoir is full.

Coulter Bay Campground
Half of the 15 undeveloped campsites at Coulter Bay Campground are walk-in tent sites along amazing rock cliffs. There are fire rings and picnic tables at each site, and restrooms and water hydrants are available throughout the campground.  The Coulter Bay Campground area is used as a major boat launch for Keyhole Reservoir.

Keyhole State Park, Wyoming

Keyhole State Park in Wyoming.

Wyoming Map, Keyhole State Park
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