Natural swimming hole
Cooney Reservoir
Lake · Montana
Community-reported spot. Details below are compiled from public sources and are reported to be accurate — always verify locally before visiting.
About this swimming hole
A Roberts-area reservoir with shoreline swimming and Beartooth views. Cooney Reservoir's water warms nicely. A south-central Montana lake swim.
Good to know
| Water type | Lake |
|---|---|
| Water temperature | 70s summer |
| Depth | swim near shore |
| Best season | June-September |
| Fees | Montana State Parks day-use |
| Reservations required | No |
| Hours | sunrise-sunset |
| Parking | State park lot |
| Amenities | restrooms, picnic tables |
| County | Carbon County |
| Nearest town | Roberts |
| Safety notes | No lifeguard |
Map
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Frequently asked questions
Can you swim in Cooney Reservoir?
Yes — Cooney Reservoir is listed as a natural swimming spot in Montana. Reported water temperature: 70s summer. Heads-up: No lifeguard. There are rarely lifeguards at natural swimming holes — verify conditions locally before you go.
Does Cooney Reservoir require reservations?
No reservations are required at Cooney Reservoir based on current information — but verify before you go.
Is there a fee to visit Cooney Reservoir?
Reported fee info: Montana State Parks day-use. Fees can change — confirm with the official link.
When is the best time to visit Cooney Reservoir?
The best season is typically June-September.