Gunlock State Park

🏊 Trusted Guide to Utah’s Red Rock Swimming Hole – Updated 2025

Turquoise Water Meets Red Sandstone

Just 15 miles northwest of St. George in Washington County, Gunlock State Park delivers one of Utah’s most visually stunning contrasts — crystal-clear turquoise water set against dramatic red sandstone formations that glow in the desert sun. The Gunlock Reservoir (266 acres within a 548-acre park) offers warm swimming, excellent fishing, and seasonal waterfalls that cascade over red rock ledges after spring snowmelt. This is southern Utah’s local secret — a family-friendly desert oasis far less crowded than nearby Zion and Snow Canyon.

Water Activities

• Swimming: Warm, calm waters with a large designated swimming area — no lifeguards on duty
• Fishing: Largemouth bass, bluegill, crappie, rainbow trout, and channel catfish — Utah license required
• Boating & Kayaking: Full-size boat ramp plus ideal conditions for kayaks and paddleboards
• Waterskiing & Sailing: Open water with consistent breezes in the afternoon
• Seasonal Waterfalls: Dramatic cascades over red rock in late spring and after heavy rain

Practical Tips

• From St. George (15 miles): Take Old Highway 91 northwest through Ivins and Santa Clara
• Entry fee: $15 per vehicle day use
• This is a day-use park — no camping on-site, but nearby Snow Canyon offers excellent campgrounds
• Rocks near waterfalls are extremely slippery — use extreme caution, cliff jumping is not sanctioned
• Bring shade and water — there’s minimal shade and temperatures exceed 100°F in summer
• Spring (March-May) offers the best combination of warm water and flowing waterfalls
• Combine with Snow Canyon State Park (nearby) for lava tubes and petrified sand dunes

Written by

State Parks Team

Editorial Team

The America's State Parks Editorial Team has collectively explored 800+ state parks across all 50 states. Our park profiles are carefully researched using official state park data, verified visitor information, and first-hand observations from our writers and contributors. Each article is fact-checked against official sources and updated regularly to ensure accuracy. Our mission is to help every American discover the natural wonders in their own backyard.

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