Guernsey State Park
Guernsey State Park is a scenic reservoir park in southeastern Wyoming known for boating, fishing, camping, and striking sandstone bluffs. Historic Civilian Conservation Corps structures and panoramic views of the North Platte River valley make it a popular destination for outdoor recreation and sightseeing.
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Visiting with Dogs
Dogs allowed in developed areas and on trails; must be leashed and under control. Clean up after pets.
Visitor Tips & Reviews
What Visitors Say
Scenic reservoir views, boating, fishing, camping, and historic CCC sites make Guernsey State Park a favorite for relaxing getaways, family trips, and outdoor recreation.
Tips from Visitors
- Bring water; summer heat can be intense.
- Watch for sudden weather changes and strong winds.
- Reserve campsites early during peak season.
- Pack sunscreen, hats, and sturdy walking shoes.
- Respect wildlife and keep a safe distance.
- Check trail and lake conditions before heading out.
Best Time to Visit
The best time to visit Guernsey State Park is late spring through early fall, when the reservoir is ideal for boating, fishing, and swimming. Summer brings the warmest water and full campground activity, while spring and fall offer cooler temperatures and fewer crowds.
Amenities
Nearby Attractions
Explore these attractions near Guernsey State Park:
- Register Cliff Historic SiteA historic emigrant landmark with carved names from the Oregon Trail era, offering a strong sense of regional history.3 miles away
- Fort Laramie National Historic SiteA major frontier-era historic site with restored buildings and exhibits about military and emigrant history.28 miles away
- Scotts Bluff National MonumentA prominent landmark with dramatic bluffs, visitor exhibits, and sweeping views of the North Platte River valley.34 miles away
Things to Do at Guernsey State Park
Camping at Guernsey State Park
Guernsey State Park offers tent and RV camping, cabins, and yurts with hookups, restrooms, showers, reservations, and seasonal availability.
Hiking Trails
Guernsey State Park offers scenic day hiking with a mix of easy to moderate trails, rolling hills, and great views of the reservoir and surrounding sandstone formations. Hikers often enjoy the quiet atmosphere, wildlife sightings, and access to historic sites. Trails are generally well-marked, though some can be rocky or exposed, so sturdy shoes and water are recommended.
Lighthouse Trail
ModerateA scenic trail with views of Guernsey Reservoir, sandstone bluffs, and the historic lighthouse area.
Sawmill Trail
ModerateA varied route through rolling terrain and pine-covered areas with lake and canyon views.
Castle Trail
EasyA shorter hike that offers access to historic park features and overlooks of the reservoir.
Reservoir Rim Trail
ModerateA longer trail following the rim above the water with expansive views and wildlife spotting opportunities.
Directions
From I-25, take Exit 92 at Guernsey and follow WY-270 west into town. Turn south on Whalen Street and continue to the park entrance near the reservoir.
Contact & Info
Frequently Asked Questions
What are the most popular things to do at Guernsey State Park?
Visitors often come for boating, fishing, swimming, hiking, and camping. The park is also known for scenic views of the reservoir, historic CCC structures, and easy access to the Oregon Trail ruts and nearby Fort Laramie area.
Is Guernsey State Park good for camping?
Yes. Many visitors say the campgrounds are clean, quiet, and family-friendly. There are sites for tents and RVs, plus restrooms and showers in many areas. Reserving ahead is a good idea during weekends and summer.
Can you swim at Guernsey State Park?
Yes, swimming is a common summer activity. Visitors usually recommend checking water conditions and bringing water shoes, as shoreline areas can be rocky. The reservoir can be busy on hot days, especially near popular day-use spots.
Is fishing good at Guernsey State Park?
Fishing is one of the park’s main draws. Anglers often target walleye, catfish, and bass. Reviews commonly mention that success varies by season and water level, so local conditions and current regulations are worth checking before you go.
Are there hiking trails and scenic overlooks?
Yes. The park has trails and viewpoints that many visitors enjoy for reservoir and canyon scenery. Some trails are short and easy, while others are more rugged. People often mention the historic and scenic areas as highlights.
What should I know before visiting Guernsey State Park?
Bring sun protection, water, and bug spray, especially in summer. Cell service may be limited in some areas. Many visitors suggest arriving early on busy weekends and checking park alerts for weather, fire restrictions, and water conditions.

Don’t Forget the Essentials
Essential camping & hiking gear we recommend to make your park trip easier and more comfortable.
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