About - GUERNSEY

Description:

Guernsey State Park is a 6,000 acre state park surrounding Guernsey Reservoir that provides a variety of water recreation, day use and overnight camping opportunities. The rugged and scenic landscape of the park offers scenic vistas and overlooks, hiking and biking trails, rock climbing and wildlife viewing opportunities. In addition to an unlimited number of outdoor recreation activities that can be found at Guernsey, the park is also a national historic landmark. Guernsey State Park provides one of the finest examples of Civilian Conservation Corps (CCC) work in the Rocky Mountain area. While the park has long been known as a haven for boating, camping, hiking and picnicking activities, it’s real treasure may lie in the exceptional CCC work that can be seen throughout the park. CCC projects in the project include hiking trails, bridges, roadways, overlooks and buildings. The Guernsey Museum and the “Castle” are just two of the must-see Guernsey CCC structures and facilities that can be found at this unique and beautiful park.


History:

Workers finished building a dam across the North Platte River in 1927 creating Guernsey Reservoir. The reservoir and the thousands of acres surrounding the reservoir provided the backdrop and the perfect natural canvas for the Bureau of Reclamation and the Civilian Conservation Corp to develop a park. The CCC worked at Guernsey State Park from 1934- 1937 and took a rugged and undeveloped landscape and turned it into the unique and picturesque park that we see today. The park came under state management in 1957 and is one of the many sites currently operated and managed by the Wyoming State Parks, Historic Sites and Trails Division (SPHS&T).

 
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Site Status

 

Attention:


 

HCB Advisories
In Effect 6/19/2026

Avoid contact with water in the vicinity of the bloom, Do not ingest water from the bloom, Rinse fish with clean water and eat only the fillet portion, Avoid water spray from the bloom, Do not allow pets or livestock to drink water near the bloom, eat bloom material, or lick fur after contact.

If people, pets, or livestock come into contact with a bloom,
rinse off with clean water as soon as possible and contact a doctor or veterinarian.


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Boat Ramps Available

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Stage 1 Fire Restrictions are in Place

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Dump Station is Open 

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Water Systems are Open
Except Fish Canyon Cove, Fish Canyon, & Skyline

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Reservations Open
May 15 - September 15

First Come First Served Campgrounds 

Newell Bay, Powell Mountain, Upper Spotted Tail, and Skyline Electric Campsites 271-275

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Yurts are Open 
April 16 - Oct. 14

 

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Museum is Open
May 1 - September 30

Daily, 9 a.m. - 5 p.m.

 

 

 

 

Notice: 

There are NO AIS inspection locations in Guernsey. 
Stop at one of the following locations before you arrive! 
Locations Near Guernsey: 
- Cheyenne (multiple locations)
- Glendo Reservoir
- Manville Check Station 
- Torrington Port of Entry
Find a location here:
AIS Inspection Locations
 

 

 

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Hours

 

The Guernsey Museum is a seasonal facility that is open from May 1 through September 30. Visitors may visit the Museum between the hours of 9:00 a.m. - 5:00 p.m..

 

Map

Phone Number

 

307-836-2334

 

Map

 Location

 

 Guernsey State Park
 2187 Lake Side Drive
 Guernsey, WY 82214

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