Decatur Flats is an expansive shallow area in Wheeler Lake, situated between the I-65 bridge and the Browns Ferry Nuclear Plant. This site features extensive mussel beds and remnants of aquatic vegetation that support a benthic ecosystem. Snorkelling here is best suited for intermediate participants due to the moderate currents and low visibility, which typically ranges between 1 and 2 metres. The site is accessible only by boat, with an average depth of 3 metres and a maximum depth of 6 metres. Typical sessions last around 45 minutes. Parking is available at the site for those arriving by land before boat deployment.

Sandy Beach at Wheeler Lake is a protected cove offering shallow, shore-accessible snorkeling. The site features a sandy bottom and depths ranging from 1 to 2 metres, making it suitable for beginners. Conditions include mild currents and visibility typically between 1 and 2 metres. Divers and snorkellers should remain aware of boat traffic in the area. Facilities available at the site include parking, toilets, showers, and a rinse station. The site is designed for casual swimming and shallow-water observation, with a typical session lasting around 45 minutes.

Wheeler Dam Rock Bluffs are located on the lower end of Wheeler Lake near the dam. The site is defined by underwater rocky ledges and bluffs that provide significant structure for divers. This is an advanced dive site requiring boat access due to the location and conditions. Divers should be aware of moderate currents, deep water, and potential boat traffic in the area. While primarily a dive location, the site is also suitable for snorkelling with a rating of 3/5. The topography offers a distinct underwater environment for those experienced in navigating freshwater wall and reef-like structures.

Safety Harbor at the Town Creek Mouth in Wheeler Lake is a muck site characterised by a mix of mud and rock bottom. Snorkellers can explore the shoreline bluffs, which feature geological formations and potential hiding spots for aquatic life. The site reaches depths of up to 3 metres and is suitable for intermediate snorkellers. Conditions include moderate currents and variable visibility. Entry is possible from both shore and boat. Divers and snorkellers should remain aware of boat traffic in the area. The habitat supports various temperate freshwater fish and aquatic vegetation typical of the region.

Doublehead Resort Beach on Wheeler Lake offers a rare white sand beach entry, making it a suitable location for beginner divers and snorkelers. The site features shallow sandy flats and an artificial reef structure. Divers can expect mild currents during their dives, which typically last around 45 minutes. The resort provides comprehensive facilities, including parking, toilets, showers, changing rooms, and a rinse station. On-site services include air fills, equipment rental, a dive shop, and boat charter options for those wishing to explore further. The site is accessible from the shore, providing a convenient entry point for training or recreational freshwater diving.

Lock Six Day Use Area on Wheeler Lake offers shore access for snorkelers looking to explore freshwater habitats. The site features submerged rocky structures and fallen timber near the banks, which serve as artificial reef elements. Snorkelers should remain aware of boat traffic in the area, as the site is located near a concrete boat ramp. Facilities at this location include parking. Due to the nature of the environment, this site is suitable for beginners. Snorkeling conditions can vary, and visitors should exercise caution when navigating near the shoreline structures.

Madison Quarry is a freshwater site in Wheeler Lake offering depths between 4 and 17 metres. The quarry features artificial reef structures on the bottom, which provide a controlled environment for divers. Visibility typically ranges from 3 to 12 metres. A significant thermocline exists, with surface temperatures reaching 29°C and bottom temperatures around 14°C. Shore entry is standard, and the site supports night diving. Divers should be aware of potential entanglement risks associated with overhead environments, including cave and wreck structures. On-site facilities include a dive shop, air fills, equipment rental, changing rooms, toilets, and a café.

Fleet Harbor Cove is a protected freshwater site situated on the south shore of Wheeler Lake, just east of the Wilson Dam. The underwater topography features gravel beds and rocky points that provide shelter from the main river channel. Divers should anticipate mild currents and variable conditions, with low visibility and potential entanglement hazards present. Access to the water is available via both shore and boat entry. Facilities at the site include parking, toilets, and showers. Due to the nature of the environment and conditions, this site is best suited for intermediate divers. Snorkelling is possible but limited, with a rating of 2 out of 5.