Brown's Canyon is a freshwater site characterised by a series of submerged slickrock terraces that resemble an underwater staircase. This canyon and drop-off formation provides a distinct topography for snorkelers to explore. Access to the site is exclusively by boat, as it is located 30 kilometres from the shore. Conditions at the site are variable, with mild currents and potential hazards including boat traffic, cold water, entanglement risks, low visibility, and overhead environments. Due to these factors, the site is best suited for intermediate-level snorkelers. Facilities available in the area include parking, toilets, showers, boat charters, air fills, and a cafe.

Anasazi Canyon is a freshwater canyon site located in the United States near Lake Powell. The topography consists of jagged underwater rock formations that create a complex environment for exploration. Divers and snorkelers can expect visibility ranging from 2 to 9 metres. Access to this site is exclusively by boat. Due to the presence of cold water, strong currents, and boat traffic, this site is recommended for intermediate divers. The protected coves within the canyon offer a sheltered experience for those visiting the area.

Annie's Canyon is a freshwater site located near Lake Powell in the United States. Accessible only by boat, the canyon features shallow shelves that are well-suited for beginners. Divers and snorkellers may encounter moderate currents and visibility ranging from 5 to 25 metres. Water temperatures in this canyon are often warmer than those found in the main channel, which can facilitate longer sessions in the water. Due to the nature of the area, users should remain aware of boat traffic and potential fluctuations in visibility.

Crystal Springs Canyon is a freshwater canyon site located in the United States near Lake Powell. The topography is defined by large fallen boulders that form a labyrinth of swim-throughs. This site is accessible only by boat and is suited for intermediate snorkelers. Conditions at the canyon can vary, and visitors should be aware of strong currents present in the area. The site is noted for its visibility, which is often high compared to other areas of the lake. Snorkelers can explore the boulder formations and underwater structures throughout the canyon.

Face Canyon is a freshwater site located in the United States near Lake Powell, characterised by dramatic vertical walls and the notable Fat Man Squeeze slot canyon feature. Divers and snorkellers can navigate the transition from deep channel water to the shallow, sandy terminus of the canyon. Access to this site requires a boat. Conditions are generally mild, though water conditions can vary. The site is suitable for intermediate divers and offers a high-quality experience for snorkellers. As this is a freshwater environment, there is no coral present.

Labyrinth Slot Canyon offers a unique freshwater snorkeling experience through narrow, winding sandstone walls. Access to this site requires a boat, as it is located approximately 17 kilometres from the shore. The environment is characterised by calm water, which allows for observation of the intricate erosion patterns along the canyon floor. Depths at this site range from the surface down to approximately 9 metres. Visibility is variable, typically ranging between 2 and 6 metres. Due to the nature of the slot canyon environment, this site is best suited for intermediate snorkelers.