Crown Point Hidden Coves offers a freshwater diving experience within the Boise Foothills Reservoirs. Accessible via the Crown Point Trail, the site features rocky coves and an underwater terrain dominated by large boulders. Divers can expect depths ranging from 3 to 15 metres, with an average depth of 8 metres. Visibility varies between 3 and 10 metres. Water temperatures fluctuate significantly, ranging from 5°C in colder periods, which necessitates drysuit use, to 15-24°C during the summer months. Due to the potential for cold water and low visibility, this site is best suited for intermediate divers. Shore entry is required to access the coves, and basic facilities including parking, toilets, and showers are available.

Poison Creek Shoreline is a freshwater site located on the western shore of Cascade Reservoir near Tamarack Resort. The underwater topography consists of a mix of sand and gravel. This location is suitable for beginners, offering shore access for snorkelling. Conditions are generally mild, though visitors should be aware of cold water temperatures and potential boat traffic in the area. Facilities available at the site include parking, toilets, and showers. As a beginner-friendly location, it provides a straightforward entry for those looking to explore the reservoir shoreline.

Boulder Creek offers a sandy beach entry into the freshwater environment of Cascade Reservoir. The site features depths ranging from 1 to 8 metres, with an average depth of 4 metres. Conditions are generally mild, though visibility fluctuates between 5 and 15 metres. Water temperatures vary significantly, reaching up to 69.6°F in summer, while early April temperatures remain cold at 39-40°F, requiring specialized thermal protection for any in-water activity. The site is suitable for beginners and provides shore access with nearby parking and toilet facilities. Typical snorkel sessions last approximately 30 minutes. Hazards include cold water, low visibility, and the presence of jellyfish.