Gremlin Cove Beach is a freshwater snorkel site located on the eastern end of Harlan County Lake near the dam. The site features an artificial reef structure and offers a protected swimming area. Snorkelling depths range from 1 to 5 metres, with an average depth of 3 metres. Entry is via the shore. Conditions vary, though proximity to the dam can occasionally improve visibility during high water levels. Water temperatures can drop to 5°C, necessitating appropriate thermal protection. The site is suitable for beginners, though snorkelers should remain aware of boat traffic in the area. Facilities including parking, toilets, and showers are available on-site.

Patterson Harbor Beach is a freshwater site located at Harlan County Lake in the United States. This location features a sandy shoreline and a designated swim zone, making it suitable for beginner snorkelers. Snorkelers can explore the shallow sandy flats near the swim platform. Conditions at the site vary, with visibility highly dependent on recent wind and boat traffic. Water temperatures in spring are cool, ranging from 4 to 16 degrees Celsius. Facilities available at the site include parking, toilets, showers, changing rooms, a cafe, equipment rental, and boat charter services. Divers and snorkelers should remain aware of boat traffic and cold water conditions.

Methodist Cove is a freshwater site located at Harlan County Lake, featuring a 300-foot rock shoal and over 150 artificial fish structures. This site serves as a demonstration of underwater habitat engineering. Snorkellers should be prepared for variable conditions, as visibility is often low, typically ranging from 1 metre upwards. The site is accessible via both shore and boat entries and is suited for intermediate-level snorkellers. Facilities available at the location include parking, toilets, and showers.