Green Bay in Lake Coeur d'Alene is a freshwater site featuring a unique cobblestone beach and rocky outcroppings. The shoreline geological formations extend underwater, providing an interesting topography for snorkelers. Access is via a shore entry. Conditions vary, with surface temperatures ranging from 15 to 24 degrees Celsius in summer, though temperatures can drop significantly in spring and autumn. A strong thermocline exists, and bottom waters remain near 4 degrees Celsius year-round. Due to the potential for cold water and mild currents, wetsuits are recommended for all visitors. Facilities at the site include parking, toilets, and showers.

Maiden Rock is a granite wall formation that drops vertically into Lake Coeur d'Alene. The site offers a wall diving experience with depths ranging from 2 to 18 metres. Divers and snorkellers can explore the rock face as it descends into the lake. Conditions vary, with visibility typically between 3 and 10 metres and mild currents. The lake features a strong thermocline, with bottom water temperatures remaining near 4°C year-round, while surface temperatures fluctuate between 16 and 24°C in summer. Due to the cold water, drysuits are highly recommended. Access is available via both shore and boat entries. Facilities at the site include parking and toilets.

Whiskey Rock Bay is a freshwater wall site located on the eastern shore of Lake Coeur d'Alene. The topography consists of dramatic underwater rock ledges that descend into the lake. Divers and snorkellers can expect visibility ranging from 10 to 30 metres, though conditions vary. Access is primarily by boat, as the site is situated approximately 16 kilometres from the shore. This location is suited for intermediate divers due to the potential for cold water, low visibility, and boat traffic. Snorkelling is also highly rated at this location. As a freshwater environment, the site is defined by its geological features rather than specific marine life.

The Ruins in Lake Coeur d'Alene features the submerged remains of an early 20th-century lumber mill. This freshwater site offers snorkelers the opportunity to explore structural debris, including old pilings and various machinery parts that now function as an artificial reef. The site is accessed from the shore off the Pend d'Oreille Bay Trail. Depths typically range between 8 and 15 metres, with an average of 10 metres. Divers and snorkelers should be aware of potential entanglement hazards among the submerged structures. A thermocline is often present due to significant temperature differences between the surface and deeper water. The site is best suited for intermediate-level snorkelers.

Sam Owen Beach on the Hope Peninsula offers a gradual slope into Lake Coeur d'Alene, making it a suitable location for beginner snorkelers. The site features shallow weed beds and rocky patches that provide a varied freshwater environment. Visibility typically ranges from 3 to 9 metres. Divers and snorkelers should be aware of the strong thermocline present in the lake, as deep waters remain near 4°C year-round. Nearshore temperatures only reach comfortable levels for swimming during July and August. Due to the significant risk of cold shock and hypothermia, appropriate thermal protection is necessary outside of the peak summer months.

Scenic Bay in Lake Coeur d'Alene offers a varied freshwater environment featuring underwater cliffs and rock formations near the shoreline. Located 50 metres from the shore, the site reaches depths between 2 and 18 metres with an average of 6 metres. Snorkellers can explore the shallow slide area, while deeper sections contain the remains of old steamboats. Visibility ranges from 5 to 25 metres, though conditions vary. The water is cold year-round, with a strong thermocline and bottom temperatures near 4°C. A wetsuit is recommended for all activities. Access is available from both shore and boat, though users should remain aware of local boat traffic.

Beaver Bay is a protected, horseshoe-shaped bay located within Farragut State Park on Lake Coeur d'Alene. This site features a shallow, sandy bottom with depths ranging from 1 to 5 metres, averaging 3 metres. It is a suitable location for beginners and family-friendly snorkeling. Access is via a shore entry. The water warms significantly during the summer months, providing comfortable conditions for in-water activities. The site is equipped with parking, toilets, showers, and changing rooms to support visitors.

Honeysuckle Beach on Lake Coeur d'Alene offers a straightforward shore entry for divers. The site is suitable for beginners, featuring an average depth of 4 metres. Divers should be prepared for variable conditions, with visibility reaching up to 6 metres. Water temperatures can be cold, particularly outside of summer, and thermal protection is necessary when temperatures drop below 13°C. Typical dives last approximately 30 minutes. Hazards at this location include boat traffic, cold water, and the potential for low visibility. On-site facilities include parking, toilets, showers, and changing rooms to support divers.