Welcome to Lake Longhorn – The Multi-Sport Training Lake of Houston!
Lake Longhorn serves the Houston area and the entire Texas Gulf Coast. It’s a 43-acre freshwater lake with 20 acres of green space located in League City, Texas. Whether you’re diving, swimming, kayaking, paddleboarding, or training for triathlons, Lake Longhorn provides a safe, clean, and convenient environment. It’s quickly becoming one of the best outdoor training destinations in the Houston and Texas Bay Area region.
For scuba diving and training:
Lake Longhorn offers six underwater training platforms, multiple large boats, and
swim-throughs for practice. Water temperatures typically range from 50°F in the winter to 89°F in the summer, with an average visibility of about 25 feet. The maximum depth of the lake is around 35 feet.
Important – All scuba diving instructors and divemasters must provide proof of insurance and current certification.
All students must register at Lake Longhorn prior to training, and all divers must complete a waiver before entering the water. Anyone diving must be properly certified or actively participating in a class under an insured instructor’s supervision.
Swimming and Triathlon Training:
Lake Longhorn offers premier open-water swimming that is ideal for daily training or competition prep. Triathletes, open-water swimmers, and fitness enthusiasts will find the lake’s course layout and smooth access ideal for all skill levels. Personal swim buoys are required for all swimmers.
Important – Safety Notice:
All swimmers must sign the Lake Longhorn waiver before entering the water and must wear a personal swim buoy. If you forget your buoy, they are available for purchase on-site. There are no lifeguards on duty — you swim entirely at your own risk.
Private Events and Company Gatherings:
Lake Longhorn’s 60 acres of green space offer shaded picnic areas, waterfront views, and plenty of room for group events. Electrical and water connections are available for gatherings and rentals. It’s an ideal venue for team outings, triathlon clubs, and family events.

 IMPORTANT: All Scuba Diving Instructors and Divemasters must provide proof of insurance with LAKE LONGHORN ENTERPRISES, LLC, CLEAR CREEK GUN RANGE, LLC, and the ERNEST LEONARD RANDALL, IV TRUST U/W ELZABETH BLAYLOCK RANDALL (the “Trust”),  listed as additional insured before holding classes at Lake Longhorn, and ALL students must sign the Lake Longhorn premise waiver. ALL scuba divers not in training must provide certification card before diving and have a Dive Buddy. All scuba divers must have a dive buddy and no solo diving is permitted in the lake without showing proof of a solo scuba diver certification. 

 IMPORTANT!! 

NO LIFEGUARD ON DUTY SWIM AT YOUR OWN RISK 

If no one is available, please go to the Gun Range Office

No Pets Allowed