Lake with Pine Trees

Keyhole Reservoir Vacation Rentals

Keyhole Reservoir, Wyoming, United States
44.3567° N, -104.779° W
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Keyhole Reservoir
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Keyhole Reservoir, a vast expanse of water on the western edge of the Black Hills in northeastern Wyoming, beckons adventure seekers, wellness enthusiasts, and families alike. This 14,720-acre reservoir, created by the Keyhole Dam in 1952, offers a multitude of activities that cater to diverse interests. For water sports enthusiasts, the reservoir is perfect for boating, water skiing, canoeing, kayaking, and even wind surfing. The shores are dotted with nine campgrounds, providing stunning views and comfortable stays.

Nearby, the iconic Devils Tower National Monument stands as a striking landmark, while the towns of Sundance and Moorcroft provide a glimpse into local culture. Bird-watchers will find Keyhole Reservoir a paradise, with numerous species migrating through the area. Fishing is another major draw, with species like walleye, catfish, and northern pike awaiting anglers. For those seeking relaxation, the mild seasons from spring to fall and the opportunity for ice fishing in winter make Keyhole Reservoir an ideal destination for all seasons. Whether you’re hiking through the surrounding trails, picnicking by the lake, or simply enjoying the serene beauty, Keyhole Reservoir is a must-visit for any traveler.

Surface area (mi)
37.28
Max depth (ft)
40.03
Elevation (ft)
4114.17
Shoreline length (mi)
53
Best time to go
Visit Keyhole Reservoir in late spring, from mid-May to early June, when wildflowers bloom and the air is crisp. This serene sanctuary offers tranquil fishing, invigorating kayaking, and sun-drenched days—perfect for a peaceful escape before summer crowds arrive.
Water Quality
Keyhole Reservoir's waters are often described as transparent, with a deep blue hue, providing clear visibility into its depths. However, the presence of harmful algae blooms has been reported, which can affect water clarity and pose health risks.

Ideal for

  • Family friendly:
  • Pet friendly:
  • Romantic getaways:

Popular activities

  • Boating
  • Waterskiing
  • Swimming
  • Fishing
  • Hiking
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Frequently Asked Questions

Ready to dive into what Keyhole Reservoir has to offer? Let’s tackle some of the burning questions you might have as you plan your visit!

  • Yes, swimming is allowed in Keyhole Reservoir but only in designated areas. Swimming areas are specifically marked for safety and convenience.

  • Keyhole Reservoir is a popular destination because it offers extensive recreational activities. The reservoir has over 14,000 acres for fishing, five boat ramps, and amenities like camping, swimming, boating, and hiking. It also features a variety of fish species including walleye, bass, and northern pike.

  • You can catch various fish species in Keyhole Reservoir, including Black Crappie, Channel Catfish, Lake Trout, Largemouth Bass, Northern Pike, Smallmouth Bass, White Crappie, Yellow Perch, and Walleye. The reservoir also contains Green Sunfish and Freshwater Drum. These species make the reservoir a diverse fishing spot.

  • There is no dog-friendly beach at Keyhole Reservoir. The designated beach area at Keyhole State Park does not allow pets. Pets are allowed in other areas of the park but must be kept on a leash.

  • The town near Keyhole Reservoir is Pine Haven. It is the closest community and also borders Devils Tower National Monument. Keyhole Reservoir is also about 17 miles northeast of Moorcroft, Wyoming.