Mont Chateau Shoreline in the Pennsylvania Highlands features a steep, freshwater topography defined by submerged rock ledges. Snorkelers can navigate these drop-offs, which provide structural changes in the lake bed. The site is suitable for intermediate snorkelers, with entry possible from both shore and boat. Conditions are generally characterized by mild currents. Divers and snorkelers should remain aware of potential hazards, including boat traffic, deep water, and the risk of entanglement. As a freshwater environment, the site offers a unique perspective on the local lake bed structure near the former state park location.

Millstone Point Beach is a freshwater shore-entry site located in the Pennsylvania Highlands. Divers can explore an artificial reef structure alongside natural reef features, with depths ranging from 2 to 21 metres and an average depth of 10 metres. The site features a sandy-to-silty bottom and is suitable for beginners. Conditions vary, with visibility typically between 3 and 6 metres and mild currents. Divers should be aware of potential thermoclines, cold water, entanglement risks, and boat traffic. On-site facilities include parking, toilets, showers, changing rooms, and a rinse station. A typical dive lasts approximately 45 minutes.

Arrowhead Cove is an artificial reef site located at the northern end of Deep Creek Lake in the Pennsylvania Highlands. This freshwater location offers a shallow dive experience with depths ranging from 1 to 8 metres, averaging 4 metres. Entry is via the shore, and the site is suitable for beginners. Divers should expect mild currents and visibility between 1 and 5 metres. Seasonal temperature variations are typical, with summer water temperatures reaching approximately 24°C, though thermoclines are common. Winter diving is possible with the use of drysuits. Parking facilities are available at the site, and a typical dive lasts around 45 minutes.

Henderson Rocks is a freshwater dive site in the United States featuring a rock wall topography with undercuts and swim-throughs. Artificial structures, including submerged Christmas trees, have been placed to create fish reefs. The site reaches a maximum depth of 6 metres and is suitable for beginners. Divers can expect mild currents throughout the area. Entry is possible from both the shore and by boat. The habitat supports various temperate freshwater fish and invertebrates typical of the region. Divers should remain aware of potential boat traffic while in the water.

Henderson's Rocks is a freshwater dive site located in Tygart Lake, United States. The topography consists of a submerged rock wall and artificial reef structures. Divers can explore depths reaching up to 6 metres. Conditions are generally mild, though water conditions can vary. Access is available via both shore and boat entries, making it suitable for beginners. Facilities at the site include parking, toilets, showers, a cafe, boat charters, and guided tours. Snorkelling is also a popular activity here, with a rating of 4 out of 5.

Pleasant Creek Backwaters, located within the Pleasant Creek Wildlife Management Area, provides a series of quiet inlets near Tygart Lake. This freshwater site is suitable for beginners, offering shallow depths ranging from 1 to 5 metres with an average of 3 metres. Snorkellers can access the water from either the shore or a boat. Conditions are generally mild, though visibility varies between 5 and 15 metres. Water temperatures fluctuate significantly, reaching 21-27°C in summer and dropping to 0-4°C in winter. Divers and snorkellers should be aware of potential entanglement hazards in the area. Facilities at the site include parking and toilets.

Glendale Bridge in the Pennsylvania Highlands is an artificial reef site featuring a submerged bridge structure and pilings. The site offers depths ranging from 2 to 23 metres, with an average depth of 8 metres. Divers and snorkellers can explore the rocky foundations and bridge remains, which provide habitat for various temperate freshwater fish and invertebrates. Conditions vary, with visibility typically between 3 and 8 metres and mild currents. The site is subject to thermal stratification and significant seasonal temperature fluctuations, ranging from near freezing in winter to 27°C in summer. Hazards include boat traffic, entanglement risks, and cold water. Access is available via both shore and boat.

Discovery Center Beach in the Pennsylvania Highlands offers a shallow freshwater environment suitable for beginners. Divers and snorkellers can expect depths ranging from 1 to 5 metres, with an average depth of 3 metres. Entry is via the shore, and the site typically experiences mild currents and visibility between 5 and 10 metres. Summer water temperatures average around 23°C, though conditions vary significantly in spring. The area is located south of the main state park beach and provides facilities including parking, toilets, and showers. Divers should remain aware of boat traffic in the vicinity. Guided tours are available for those visiting this site.