Gunlock Reservoir & Falls
Swimming, Fishing & Waterfall Guide
Hidden gem 25 minutes northwest of St. George with year-round fishing, seasonal waterfalls, and scenic water recreation
Quick Info
Free (undeveloped area)
Dawn to Dusk
Gunlock, UT (25 min NW of St. George)
~240 acres reservoir
Are the Gunlock Falls Still Flowing?
The falls at Gunlock Reservoir only flow seasonally, typically from late winter through spring (January-May) when snowmelt and rainfall feed the stream. Flow diminishes significantly or stops completely during summer and fall months (June-December).
Water flow depends entirely on precipitation in the surrounding mountains and snowpack conditions. A dry winter means little to no waterfall activity. Before planning a waterfall-viewing visit, check current weather conditions and water reports.
Best time to see falls: March through May. Call local St. George tourism (435-627-4635) or check weather reports before your visit.
Fishing at Gunlock
Gunlock Reservoir is a productive fishing destination stocked with largemouth bass, channel catfish, and bluegill. The reservoir offers year-round fishing opportunities with good catch rates for largemouth bass, especially during spring and fall when water temperatures are moderate.
Fish Species:
- Largemouth Bass — Year-round fishing with good catch rates; best in spring and fall
- Channel Catfish — Night fishing productive; summer is prime season
- Bluegill — Panfish option for lighter tackle and family fishing
A boat launch is available, making both shore fishing and boat fishing viable. Bring your own boat if you want to access deeper water and structure. Utah fishing licenses are required and available online or at local retailers.
Swimming & Recreation
Gunlock Reservoir is a popular swimming and water recreation destination, though it offers minimal developed infrastructure. The unimproved beach areas provide direct water access, and cliff jumping spots are available for those seeking adventure.
What to Know:
- No lifeguards — Swimming is at your own risk
- Water temperature — Cold, especially spring/early summer (snowmelt-fed)
- Unimproved access — Bring your own shade, facilities, and supplies
- Cliff jumping — Possible but dangerous; assess conditions and water depth carefully
- Best season — Late spring through early fall for warmest water (though still cool)
The lack of developed facilities means you should bring everything you need: shade structure, water for drinking, sunscreen, life jackets (especially for children), and first aid supplies. The reward is a more natural, less-crowded experience than developed beaches.
Camping
There is no developed campground directly at Gunlock Reservoir. However, primitive and dispersed camping is allowed on nearby BLM (Bureau of Land Management) land. Many visitors camp on surrounding public land, though amenities are minimal or nonexistent.
Camping Options:
- Primitive/Dispersed Camping (On-site) — Free, no amenities, check BLM regulations before setting up
- Snow Canyon State Park — 15 minutes south; 33 developed campsites, electric hookups, restrooms, hot showers. $25-$35/night
- Red Cliffs Recreation Area — 20 minutes south; primitive camping with basic facilities available
For overnight stays with amenities, Snow Canyon State Park is your best nearby option. Make reservations at stateparks.utah.gov for guaranteed camping, especially during peak seasons (October-April).
How to Get There
Gunlock Reservoir is located about 25 miles northwest of St. George, approximately 25-30 minutes by car depending on traffic and exact parking location.
Directions from St. George:
- Head north on Bluff Street (becomes UT-18)
- Continue north approximately 15 miles
- Turn left onto Old Highway 91
- Follow Old Highway 91 northwest toward Gunlock
- Follow signs and road to Gunlock Reservoir parking area
GPS Coordinates: 37.3089° N, 113.8658° W
Tip: The final stretch to the reservoir can be rough or seasonally affected. Check road conditions before your visit, especially after heavy rain or winter weather.
Frequently Asked Questions
Are the Gunlock Falls still flowing right now?
The Gunlock Falls typically flow seasonally—usually from late winter through spring (January-May) after significant rainfall or snowmelt in the surrounding mountains. Flow diminishes or stops during dry months (summer and fall). Check local weather reports and contact St. George tourism for current conditions before planning a waterfall-viewing trip.
Is Gunlock Reservoir free to visit?
Yes, Gunlock Reservoir is completely free to visit. There is no entry fee for day use or recreation. The area is undeveloped with minimal infrastructure, making it an affordable outdoor destination for fishing, swimming, and picnicking. Parking is free and available near the reservoir access point.
Can you camp at Gunlock Reservoir?
There is no developed campground directly at Gunlock Reservoir. However, primitive and dispersed camping is allowed on nearby BLM land. For developed camping facilities with amenities, the nearest options are Snow Canyon State Park (15 minutes away) or Red Cliffs Recreation Area. Some visitors do camp primitively on surrounding land; check BLM regulations before setting up.
What fish are in Gunlock Reservoir?
Gunlock Reservoir is stocked with largemouth bass, channel catfish, and bluegill. Largemouth bass fishing is popular year-round, with good catches possible throughout the year. The reservoir offers decent opportunities for shore fishing and boat fishing. No fishing license is required if you're just watching; otherwise, purchase a Utah fishing license.
How far is Gunlock Reservoir from St. George?
Gunlock Reservoir is approximately 25 miles northwest of St. George, about 25-30 minutes by car. Drive north on Bluff Street/UT-18, turn left on Old Highway 91, and follow signs to Gunlock. It's one of Southern Utah's most convenient water destinations for day trips.
Is Gunlock Reservoir safe for swimming?
Gunlock Reservoir is generally safe for swimming, though there are important considerations. There are no lifeguards on duty and water conditions vary seasonally. The water can be cold, especially in spring when fed by snowmelt. Unimproved beach areas and lack of facilities mean you should bring your own supplies. Swimming is at your own risk; always exercise caution and watch weather conditions.