Twin Lakes is a freshwater quarry in the Houston Area offering a variety of underwater environments including artificial reefs and wrecks. The site features a depth range of 2 to 15 metres with an average of 8 metres, making it suitable for beginner divers and snorkellers. Entry is via the shore, and the site experiences mild currents. Visibility typically ranges from 1 to 6 metres. Divers should maintain neutral buoyancy to avoid disturbing the bottom silt, which can reduce visibility. On-site facilities include parking, toilets, air fills, equipment rental, a cafe, and gear storage.

Longhorn Lake is a freshwater site featuring a submerged wreck that functions as an artificial reef. Divers can explore the structure at depths ranging from the surface to 13 metres, with an average depth of 8 metres. The site is accessible via a shore entry and experiences mild currents. Visibility is variable, typically ranging between 1 and 9 metres, and conditions may include cold water and low-visibility environments. Divers should remain aware of potential entanglement risks when navigating the wreck. Facilities available at the site include parking, toilets, showers, a rinse station, air fills, equipment rental, and guided tours. Night diving is permitted at this location.

Lake Longhorn is a freshwater quarry in the Houston area featuring artificial reefs and multiple sunken boats for divers to explore. The site includes underwater training platforms and swim-through structures designed for scuba instruction and practice. Depths range from 9 to 45 metres, with an average of 25 metres. Entry is via the shore, and conditions include mild currents with visibility fluctuating between 2 and 30 metres. Water temperatures vary significantly, from 10°C in winter to 32°C in summer. Facilities on-site include air fills, equipment rental, guided tours, parking, showers, and toilets. Night diving is permitted at this location.

OTA Pool is a shallow, shore-entry artificial reef located in the Houston Area Quarries. With depths ranging from 1 to 4 metres and an average of 2 metres, it provides a controlled environment for beginner divers. Visibility typically spans 10 to 15 metres, and the water features a mild current. The site includes an overhead environment, requiring divers to maintain neutral buoyancy and exercise caution when navigating enclosed swim-through areas to avoid contact or entanglement. On-site facilities include a dive shop and air fills, supporting multiple dives per visit. Divers should remain aware of their position relative to the overhead structure at all times.