Grayrocks Reservoir is one of Wyoming’s best-kept warmwater secrets – a quiet reservoir on the Laramie River near Wheatland that’s earned a reputation among bass anglers as one of the top largemouth bass waters in the state. Warmed in part by a nearby power station and rarely crowded, it’s a destination for those who’d rather flip for bass than chase trout in the high country.
This guide covers Grayrocks Reservoir: the bass fishing, the recreation, and access. It’s part of our growing Wyoming Lakes Database.
Grayrocks Reservoir at a glance
- Surface area: ~3,500 acres on the Laramie River
- Location: Platte County, southeastern Wyoming (near Wheatland)
- Top fish: largemouth bass, walleye, crappie, yellow perch, channel catfish
Fishing Grayrocks Reservoir
Grayrocks stands out in trout-dominated Wyoming as a genuine warmwater fishery. Largemouth bass are the headliner – the reservoir is regarded as one of Wyoming’s best bass lakes – with good walleye, crappie, yellow perch and channel catfish as well. A Wyoming fishing license is required. The reservoir, which helps cool the nearby Laramie River Station power plant, stays productive, and its coves, points and timber give bass anglers plenty of structure to work.
Recreation and access
A public recreation area with a boat ramp and primitive camping serves the reservoir, in the rolling plains and bluffs of Platte County. It’s a low-key, fishing-focused destination rather than a developed park – bring your bass boat and expect peace and quiet rather than crowds. Boating, fishing and birding are the main draws.
Getting there and what’s nearby
Grayrocks Reservoir is north of Wheatland in southeastern Wyoming, off I-25 and county roads, about 1 hour north of Cheyenne. Glendo Reservoir and Guernsey State Park are nearby for a multi-lake trip.
Know before you go
- Fishing license: a Wyoming license is required.
- Bass destination: one of Wyoming’s best largemouth lakes – a rarity in a trout state.
- Low-key: primitive facilities – come self-sufficient.
Frequently asked questions
What fish are in Grayrocks Reservoir?
Largemouth bass (its claim to fame), walleye, crappie, yellow perch and channel catfish – one of Wyoming’s best warmwater bass lakes.
Where is Grayrocks Reservoir?
North of Wheatland in Platte County, southeastern Wyoming, about an hour north of Cheyenne.
Related: explore more of the largest lakes in Wyoming, or head back to the Wyoming Lakes Database.
