Gunlock Reservoir

Swimming hole · Washington County County, UT · 37.246651, -113.772477

Closure or warning on file

Gunlock Waterfalls Watch (park, checked 2026-09-28): waterfalls not flowing; recreating on rocks near the falls is dangerous (slick rock, swift water when flowing, covered hazards). Floating debris in the reservoir. Park algae conditions: Watch.

Gunlock State Park reservoir and shoreline
Thure Johnson, CC BY 2.0
Elevation
3,600 ft
Road
Paved
Permit
Not required

Entry fee: Day-use: UT $15/vehicle, senior 65+ $10, out-of-state $25 (includes launches). Gunlock Reservoir is a lake cove in Washington County, Utah.

01

Closures and warnings

Gunlock Waterfalls Watch (park, checked 2026-09-28): waterfalls not flowing; recreating on rocks near the falls is dangerous (slick rock, swift water when flowing, covered hazards). Floating debris in the reservoir. As of September 28, 2026.

Park algae conditions: Watch. As of September 28, 2026.

02

Before you swim

Swimming allowedYes
Water typeLake cove
EntryWalk in
Algal bloom advisoryWatch
03

Access

RoadPaved
Road noteOn Gunlock Road about 15 miles northwest of St. George. Main entrance road construction ongoing; stay left around the work zone (park notice updated 2026-09-08).
ParkingDay-use and boat-ramp parking inside Gunlock State Park.
FeeDay-use: UT $15/vehicle, senior 65+ $10, out-of-state $25 (includes launches). Annual $125; senior annual $65.
HoursPark 7 a.m. to 10 p.m. daily. Boat ramp: May to September 7 a.m. to 8 p.m.; October to April 7 a.m. to 7 p.m.
Reservation or permitNot required
Elevation3,600 ft
Managed byUtah Division of State Parks (Gunlock State Park)
ShowersYes
ShadeYes
Picnic sitesYes
NoteBeach access, shade shelters, fire pits, grills; cottages and RV camping available.
  • Gunlock boat ramp boat launch : Launch included with day-use vehicle pass. Floating debris advisory: launch at your own risk.
04

Rules

CampingAllowed
05

Common questions

Common questions

Is Gunlock Reservoir open?

Gunlock Waterfalls Watch (park, checked 2026-09-28): waterfalls not flowing; recreating on rocks near the falls is dangerous (slick rock, swift water when flowing, covered hazards). Floating debris in the reservoir. As of September 28, 2026. Park algae conditions: Watch. As of September 28, 2026. Hours: Park 7 a.m. to 10 p.m. daily. Boat ramp: May to September 7 a.m. to 8 p.m.; October to April 7 a.m. to 7 p.m.

Can you swim at Gunlock Reservoir?

Yes, swimming is allowed at Gunlock Reservoir. The state's harmful algal bloom advisory here is at the Watch level. Park algae conditions: Watch. As of September 28, 2026.

How do you get to Gunlock Reservoir?

The road in is paved. On Gunlock Road about 15 miles northwest of St. George. Main entrance road construction ongoing; stay left around the work zone (park notice updated 2026-09-08). Parking: Day-use and boat-ramp parking inside Gunlock State Park.

Do you need a reservation for Gunlock Reservoir?

No reservation or permit is required.

Is there a fee at Gunlock Reservoir?

The fee is Day-use: UT $15/vehicle, senior 65+ $10, out-of-state $25 (includes launches). Annual $125; senior annual $65.

What facilities are at Gunlock Reservoir?

Showers, shade structures, picnic sites, and a boat launch. Beach access, shade shelters, fire pits, grills; cottages and RV camping available.

What are the rules at Gunlock Reservoir?

Camping is allowed.

06

Nearby

Sources

2

More: Utah swimming holes