Gunlock Reservoir
Lake · Utah
ℹ️ 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 desert reservoir near the Arizona line with shoreline swimming and warm water. Gunlock's falls spill dramatically after wet winters. A quiet Washington County swim.
Good to know
| Water type | Lake |
|---|---|
| Water temperature | 70s summer |
| Depth | swim near shore |
| Best season | April-October |
| Fees | Utah State Parks day-use ($15/vehicle) |
| Reservations required | No |
| Hours | sunrise-sunset |
| Parking | State park lot |
| Amenities | restrooms, picnic tables |
| County | Washington County |
| Nearest town | Gunlock |
| Safety notes | No lifeguard |
Map
Nearby swimming holes
Frequently asked questions
Does Gunlock Reservoir require reservations?
No reservations are required at Gunlock Reservoir based on current information — but verify before you go.
Is there a fee to visit Gunlock Reservoir?
Reported fee info: Utah State Parks day-use ($15/vehicle). Fees can change — confirm with the official link.
When is the best time to visit Gunlock Reservoir?
The best season is typically April-October.
⚠️ Verify before you go. Conditions, fees, reservations, and access can change — confirm details with the official link before visiting. Last verified: September 2026