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Keyhole State Park
 

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About Our Site - Keyhole State Park

 

Keyhole State Park offers swimming, hiking, boating, water skiing, bird-watching and fishing. Some of the state’s largest fish have been caught at Keyhole. You can also reserve one of our 3 group shelters to host weddings, family get togethers and company picnics. Keyhole State Park is located on the western edge of the Black Hills, between Sundance and Moorcroft, and is easily accessed off I-90 at exit 165. Travel north 6 miles and the entrance to Park Headquarters will be on your left. Keyhole State Park has 10 campgrounds, all of which are reservation only.

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Keyhole Reservoir Investigated for Cyanobacterial Blooms

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August 10, 2020

A concerned visitor alerted Wyoming State Parks that their pets became ill after a recent visit to Keyhole State Park.  

KHHCBsOut of an abundance of caution, park staff posted warning signs and contacted the Wyoming Department of Environmental Quality (DEQ).  That agency is proceeding with an investigation of a potential harmful cyanobacterial bloom (HCB). 

The investigation is currently only for the section of the reservoir in the upper end of Cottonwood Bay, potentially affecting Pronghorn, Tatanka, Arch Rock, Cottonwood, and Homestead campgrounds.  

Recent and repeated satellite imagery does not show the presence of HCB, and park staff have visually surveyed the potentially affected areas on land and from the reservoir, and have not seen any evidence of a bloom. DEQ is sending staff to investigate, and the Wyoming Department of Health has been alerted.

Lakes or reservoirs under investigation are not closed. Marinas, lakeside parks and camping facilities are open for business. Any closed areas will be specifically noted. Visitors are advised to err on the side of caution and use their best judgement when recreating in this area.

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Wyoming State Parks, Historic Sites & Trails
A Division of Wyoming State Parks & Cultural Resources
2301 Central Avenue, 4th Floor, Cheyenne, WY 82002
307-777-6323www.wyoparks.org

 

 

 

 

Park Fees

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Site Status

 

COVID-19 Coronavirus
Important Information:

Camping in Wyoming State Parks now open to ALL visitors. Social distancing guidelines in place. 

 

  • Most boat docks at Keyhole State Park have been pulled for the winter season.  However, one boat dock will remain available to boaters until November 15, 2020
    • The available dock is located at the Coulter Bay ramp
    • If the weather turns bad, and it looks like the lake will freeze up, the Coulter Bay dock could be pulled earlier.
  • Shower house is now closed
  • Drinking water systems will be closed starting on October 1st
  • RV dump station will remain open until November 1st (weather permitting)
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Hours

 
  • Our site is up and running year-round.
  • Our fee booths are open May thru October. When the booths are closed please use the fee canisters located at each entrance to pay fees.
  • Our office hours of operation are 7 a.m. to 3:30 p.m., Monday thru Friday.

 

Map

Phone Number

 

307-756-3596

 

Map

 Location

 

 Keyhole State Park
 22 Marina Rd
 Moorcroft, WY 82721

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