Seminoe Reservoir is a big, wild reservoir on the North Platte River in the remote heart of Carbon County, Wyoming – a walleye-and-trout fishery wrapped in red granite, sagebrush and even sand dunes. Anchored by Seminoe State Park and sitting just upstream of the legendary “Miracle Mile” trout water, it’s a destination for anglers and boaters who don’t mind a drive into big, empty country.
This guide covers Seminoe Reservoir: the fishing, the state park and scenery, and access. It’s part of our growing Wyoming Lakes Database.
Seminoe Reservoir at a glance
- Surface area: ~20,000 acres on the North Platte River
- Location: Carbon County, south-central Wyoming (north of Sinclair & Rawlins)
- Built: Seminoe Dam, completed 1939; the centerpiece of Seminoe State Park
- Top fish: walleye, rainbow & brown trout, yellow perch
Fishing Seminoe Reservoir
Seminoe is best known for walleye, with a strong population that makes it one of the better walleye lakes in southern Wyoming, plus good rainbow and brown trout and yellow perch. A Wyoming fishing license is required. Just below the reservoir, between Seminoe and Pathfinder, the North Platte runs through the famous “Miracle Mile,” a blue-ribbon trout stretch that draws fly anglers from around the world – making the whole area a fishing destination.
The state park, dunes and scenery
Seminoe State Park offers campgrounds, boat ramps and beaches on the reservoir’s shore, framed by red granite outcrops of the Seminoe Mountains and, remarkably, the Seminoe (Killpecker-area) sand dunes nearby. Boating, water sports and camping are the draws, in a remote high-desert landscape full of pronghorn, deer and raptors. The drive in from Sinclair on the Seminoe Road is itself a scenic adventure.
Getting there and what’s nearby
Seminoe Reservoir is north of Sinclair and Rawlins off I-80, reached by the Seminoe Road, about 35 miles of mostly paved/gravel driving into remote country. Pathfinder Reservoir and the Miracle Mile lie downstream, and the Snowy Range and Saratoga are to the west.
Know before you go
- Fishing license: a Wyoming license is required.
- Remote: services are far away – bring fuel, water and supplies.
- Wind: the big open reservoir can get rough fast – watch the forecast.
Frequently asked questions
What fish are in Seminoe Reservoir?
Walleye (the headliner), rainbow and brown trout, and yellow perch. The “Miracle Mile” trout water lies just downstream.
What is the Miracle Mile?
A world-famous blue-ribbon trout stretch of the North Platte just below Seminoe Reservoir, prized by fly anglers.
Where is Seminoe Reservoir?
In Carbon County, south-central Wyoming, north of Sinclair and Rawlins via the Seminoe Road.
Related: explore more of the largest lakes in Wyoming, or head back to the Wyoming Lakes Database.
