Lake Travis is a freshwater reservoir featuring a variety of submerged structures, artificial reefs, and drop-offs. Divers can explore depths ranging from 5 to 30 metres, with an average depth of 22 metres. The site is accessible via both shore and boat, though divers should remain vigilant regarding boat traffic and use a surface marker. Visibility typically fluctuates between 5 and 12 metres, and thermoclines are common. The site is suitable for beginners, while deeper sections provide challenges for more experienced divers. Night diving is permitted, offering a different perspective of the submerged terrain. Facilities include parking, toilets, and showers, with guided tours and boat charters available.

Mansfield Dam in Lake Travis offers a diverse freshwater diving experience featuring artificial reefs, canyon topography, and sunken wrecks. Divers can navigate an underwater trail and compass course that connects various attractions, including historic dam construction materials and geological points of interest. Four underwater platforms are positioned at different depths to assist with training and buoyancy. The site ranges from 2 to 27 metres deep, with an average depth of 15 metres and visibility typically between 4 and 9 metres. Shore access is available, and the site is suitable for beginners. Divers should remain aware of boat traffic. Facilities include parking, toilets, showers, and an informational kiosk.

Barton Springs Pool is a three-acre natural spring-fed pool located in the United States. This freshwater site offers depths ranging from 0 to 18 metres and is accessible via a shore entry. Divers and snorkellers can expect mild currents and water temperatures that remain consistently between 20 and 21°C throughout the year. The site is suitable for beginners, though visibility can be low. Marine life recorded at the site includes very common species such as Blue Gill, Small Mouth Bass, and snails, alongside common populations of Redbreast Sunfish, Tilapia, and livebearers. Less frequently encountered species include perch, carp, and Redear Sunfish. On-site facilities include parking, toilets, showers, changing rooms, and first aid.

Hamilton Pool Preserve is a natural grotto formed by a collapsed underground river, featuring a 15-metre waterfall. Snorkellers can explore the limestone formations beneath the surface in depths ranging from 1 to 7 metres. Access is via a shore entry, and the site is suitable for beginners. The water is located 402 metres from the shore. Visitors should be aware that water temperatures can be very cold, particularly in winter when they may drop into the 40s Fahrenheit. Typical visits last around 120 minutes. Parking facilities are available at the preserve.

Jacob's Well is a perennial karstic spring serving as the entrance to an extensive underwater cave system. The site features a vertical well structure with depths ranging from 1 to 9 metres, averaging 5 metres. Access is via the shore, and the water temperature remains a constant 20°C year-round. Visibility typically spans 10 to 20 metres. Due to the presence of an overhead environment, deep sections, and moderate currents, this site is suited for intermediate divers. Snorkellers can explore the surface well, which provides a distinct vertical perspective of the spring opening. Facilities available at the site include parking, toilets, and guided tours.

Blue Hole Regional Park in Lake Travis offers a freshwater diving experience within a spring-fed environment. The site features underwater cypress root systems and a depth range of 1 to 18 metres, with an average depth of 7 metres. Divers can expect mild currents and visibility typically between 10 and 20 metres. The water temperature remains consistent between 20 and 24 degrees Celsius throughout the year. Access is via a shore entry, making it suitable for beginners. Facilities available at the park include parking, toilets, and changing rooms. Due to the nature of the site, divers should be aware of deep areas.