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.

288 Lake is a shore-entry freshwater site featuring an artificial reef structure. The site maintains a consistent depth of 8 metres and is suitable for beginners due to the lack of current. Visibility is variable, ranging from 1 to 5 metres, which requires divers to maintain close contact with their buddy and navigate using the reef structures. Due to the potential for low visibility and the presence of artificial structures, divers should monitor their equipment closely to avoid entanglement. The site supports a variety of freshwater fish and invertebrates typical of this habitat. Always check locally before visiting to confirm current facility availability.

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.