Seminoe State Park - United States
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About Seminoe State Park
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Best time to visit Seminoe State Park
Late June through early September is the prime window, when warm days and long evenings make the reservoir ideal for boating, swimming and shoreline camping. July and August see peak crowds on summer weekends and holidays, so midweek visits are easier for finding sites. May, early June and September are pleasant shoulder seasons with cooler nights and lighter traffic, though spring winds can be strong on this exposed high-desert reservoir. Late fall through early spring brings cold temperatures, snow, and reduced services, with most amenities closed.
Campgrounds closed, day-use only; access road may be snow-covered
Campgrounds closed, day-use only; winter winds and ice on the reservoir
Campgrounds typically closed; mud and snow possible on access roads
Shoulder season; some facilities still closed, expect strong winds
Campgrounds opening; cool nights and gusty afternoons
Reliable warm weather and long days for boating
Peak season; reserve early and watch for afternoon thunderstorms
Peak season; hot days, warm reservoir water
Excellent shoulder season with lighter crowds
Cool nights; many services winding down
Campgrounds closed, day-use only
Campgrounds closed, day-use only; snow and ice common
Things to do at Seminoe State Park
- Boating on Seminoe ReservoirRV parking available
Seminoe Reservoir is the centerpiece of the park, offering powerboating, sailing, paddling and waterskiing on a large high-desert lake. Boat ramps are located near the main campgrounds, and RVers can park at developed lots with trailer-friendly spaces.
- Fishing for walleye, trout and perchRV parking available
The reservoir supports a popular cold-water fishery with walleye, rainbow trout and yellow perch among the main targets. Shore anglers can fish from the beaches near the campgrounds while boaters work deeper waters.
- Swimming and beach day-useRV parking available
Sandy and gravelly beaches along the reservoir give visitors easy access to the water for swimming, wading and paddleboarding. Day-use parking is available near the developed campgrounds with room for tow vehicles.
- Drive the Seminoe-Alcova Backcountry Byway Moderate
The Seminoe-Alcova Backcountry Byway is a 64 mile scenic route through south central Wyoming connecting Sinclair and Alcova. Travelers pass pronghorn-grazed prairie and stark desert and climb the rugged Seminoe Mountains, and although the road is in a remote area, the changing landscape is worth the back-country journey. Smaller RVs and tow vehicles are recommended; large motorhomes should turn around at the park. blm.gov/visit/seminoe-alcova-backcountry-byway
- Fish the Miracle MileRV parking available
The Miracle Mile is a famous tailwater stretch of the North Platte River downstream of the dam, considered a blue-ribbon trout fishery. Pullouts and primitive parking serve anglers on day trips from the park. blm.gov/visit/seminoe-alcova-backcountry-byway
- Wildlife viewing EasyRV parking available
The Seminoe area is rich in wildlife year-round. Visitors might see mule deer, antelope, bighorn sheep, golden and bald eagles, pelicans, and ferruginous hawks. Bring binoculars and watch the cliffs north of the reservoir for raptors. blm.gov/visit/seminoe-alcova-backcountry-byway
- Explore the Seminoe Sand Dunes Strenuous
A large active dune field lies along the byway near the reservoir, providing a striking contrast to the surrounding sagebrush country. Hiking on loose sand is strenuous but offers excellent photography and quiet exploration away from the campgrounds.
- Stargazing from camp EasyRV parking available
Seminoe sits far from urban light sources, giving exceptionally dark skies on clear nights. RVers can step out from their site at North Red Hills, South Red Hills or Sunshine Beach campgrounds for unobstructed views of the Milky Way.
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RV Rentals Seminoe State Park
Seminoe State Park, WY, United States
How to get to Seminoe State Park
From Sinclair, Wyoming on Interstate 80 (Exit 219), the park is roughly a 35 mile drive north on Carbon County Road 351. The southern access begins at Sinclair at the junction of Interstate 80 and Carbon County Road 351 (exit 219), and the byway follows County Road 351 north into Natrona County and ends at Alcova. Rawlins is about 45 minutes southwest and Casper is roughly two hours northeast, both useful resupply stops. RVers should note that the road is in a remote area with long unserviced stretches, gravel sections on the byway portion, and limited cell coverage, so fuel up and check tires before heading in. The nearest commercial airport for fly-and-rent trips is Casper/Natrona County International Airport (CPR).
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