White Star Quarry is a freshwater dive site in the United States featuring a mix of wrecks, walls, and artificial reefs. The site offers shore access and is suitable for beginners, with depths ranging from 8 to 24 metres and an average depth of 12 metres. Visibility typically spans 6 to 12 metres. Water temperatures fluctuate from below 10°C in winter to 21°C in summer, with a thermocline present in mid-July. Divers should be aware of hazards including cold water, deep sections, entanglement risks, and boat traffic. On-site facilities include parking, toilets, showers, changing rooms, air fills, equipment rental, a cafe, a dive shop, and guided tours. Night diving is permitted.

Portage Quarry is a freshwater dive site in the United States offering calm, controlled conditions suitable for beginner divers. The site features depths ranging from 12 to 18 metres with visibility typically between 5 and 15 metres. Divers enter directly from the shore. Water temperatures vary significantly, with a thermocline present in late May and surface temperatures reaching 20 to 26 degrees Celsius during the summer. The site is equipped with on-site facilities including a dive shop, air fills, parking, showers, toilets, and changing rooms. Guided tours are available for those who prefer assistance, and the site is well-suited for training dives or refresher sessions.

Luna Pier Public Beach, located on the Detroit River, offers shore access to a crescent-shaped pier and sandy beach. Snorkelers can explore the rock embankments flanking the pier, which provide structure for the site. Depths at this location range from 1 to 5 metres, with an average of 3 metres. Conditions vary significantly, with visibility ranging from 1 to 60 metres and currents that can be moderate to strong. Hazards include cold water, rip currents, and surf. The site is suitable for beginners, though the cold water temperatures require caution. Facilities available at the beach include parking, toilets, and showers.

Bolles Harbor Dike is an artificial reef formed by man-made rock structures protecting the harbor entrance. The site offers depths ranging from 3 to 8 metres, with an average of 6 metres. Snorkelers can explore the edge of these rock dikes, which provide a habitat for various freshwater fish. Conditions are variable, with visibility ranging from 1 to 15 metres and mild currents present. Due to the presence of boat traffic, snorkelers should exercise caution. The site is suitable for intermediate snorkelers, with water temperatures reaching comfortable levels between June and September.

Sterling State Park, located on the Detroit River and Lake Erie, offers a mile of sandy shoreline suitable for beginner snorkelers. The site features a shallow reef environment with an average depth of 2 metres, ranging between 1 and 5 metres. Snorkelers can explore the sandy bottom and areas with submerged timber. Conditions vary, with visibility typically between 1 and 5 metres and moderate currents. Water temperatures fluctuate significantly throughout the year, from 1°C in winter to 25°C in July. Hazards include boat traffic, surf, rip currents, and low visibility. Facilities available on-site include parking, toilets, showers, changing rooms, and a rinse station.

Brest Bay in the Detroit River features submerged rock piles and ridges that provide vertical structure for divers and snorkellers. This freshwater site consists of both natural and artificial reef formations at depths of 3 to 5 metres. Access is strictly by boat, and the site is suited for intermediate divers due to variable conditions. Visibility typically ranges from 3 to 10 metres, with mild currents present. Water temperatures fluctuate significantly throughout the year, ranging from 1C in winter to 25C in July. Divers should remain aware of boat traffic and the risks associated with cold water, particularly outside of the summer months.

Massie Cliffside Preserve on South Bass Island offers a unique freshwater dive experience along 265 feet of shoreline. The site is defined by dolomite cliffs that extend underwater, forming a vertical wall structure that drops into the Detroit River. Divers can access the water from the shore near the preserve's dock. Conditions are generally suitable for beginners, though currents are typically mild. Water temperatures fluctuate significantly throughout the year, ranging from 1C in winter to 25C in July. Due to the cold water temperatures, appropriate thermal protection is required. Snorkelling is possible at this location, though it is rated 2/5.