- Concrete boat launches offer easy access for Cooney Reservoir Fishing -- anglers can troll or still-fish, though many try their luck from Cooney’s banksl.
- Ice fishers cast worms, corn, and marshmallows hoping to attract hungry fish.
- Trollers at Cooney generally have the best luck in late Spring and early Summer with worms and corn.
Cooney Reservoir, about ½ hour away from Red Lodge, Montana, is one of the most popular Southeastern Montana trout fishing and boating lakes during the summer.
Type of Waterway
Originally created as an irrigation reservoir, Cooney reservoir and lake is primarily a day-use recreation area ($5 fee for non-residents), covering more than 300 acres and nearly 800 water acres, popular with both anglers and boating/waterskiing/jet skiing enthusiasts.
Concrete boat launches offer easy access for anglers to troll or still-fish, though many try their luck fishing from Cooney’s banks as well.
Fishing is allowed year-round at Cooney, subject to current Montana Fish and Wildlife regulations. Consider hiring an experienced guide or visiting a local outfitter listed here for more advice and any equipment needs.
Ice fishers cast worms, corn, and marshmallows hoping to attract hungry fish. Anglers who can stand the cold weather are welcome to camp for up to 7 days within a 30-day period for $13/night.
Spring and Summer
Trollers at Cooney generally have the best luck in late Spring and early Summer with worms and corn. Summer anglers who want to camp at Cooney pay $15/night with access to 75-plus campsites accommodating both tent and RVs.
Most Common Fish Species
- Rainbow Trout
- Black Crappie
Cooney Dam and Reservoir is located about 25 miles north of Red Lodge, Montana, off U.S. HWY 212, then 8 miles west of Boyd on a dirt road.
Cooney Reservoir State Park
Mailing Address: Cooney Reservoir State Park
PO Box 254
Joliet, MT 59041
Tel: (406) 445-2326