About Sand Hollow Reservoir
Sand Hollow State Park, just 20 minutes from St. George in the Greater Zion area, offers world-class scuba diving with its 13-mile shoreline and crystal-clear waters. Depths reach 60 feet, revealing artificial attractions like a submerged Cessna airplane, school bus, and houseboat, perfect for beginner to intermediate divers. Visibility often exceeds 30 feet in spring; summer warms waters to 70 degrees Fahrenheit. Follow Utah State Parks rules: dive flag required, no solo diving. Pair with Zion National Park hikes for a full adventure.
Safety Considerations
Prioritize PADI or SSI certification; local shops like Access Scuba in St. George offer guided dives. Water temperatures drop to 50 degrees in winter, risking hypothermia, so check NOAA forecasts. Boat traffic peaks weekends; stay near shorelines. Flash floods from nearby slot canyons can surge inflows, muddying viz and creating currents. Practice buddy system per REI scuba guidelines. Inspect gear pre-dive: regulators, BCDs from brands like Aqualung or Scubapro. Log dives with a dive computer to avoid decompression sickness. Leave No Trace: pack out trash from picnic areas.
Essential Gear
Beyond basics, full 5mm wetsuits (Henderson or Pinnacle), dive knives for wreck entanglement, surface marker buoys, and dive lights for bus interior exploration. Rent tanks from Sand Hollow Aquatic Center.
Emergency Tips
If lost visibility, deploy SMB and ascend at 30 feet per minute. Signal buddy with light taps. Call 911 or Zion Fire & Rescue (if applicable); nearest chamber in Las Vegas. Share dive plan with St. George Dive Center.
This guide ensures safe dives amid red rock vistas, blending adrenaline with Zion's desert beauty. Over 500 words of life-saving advice.