About us

Your year-round retreat

Blue Diamond Marina & Resort is Priest Lake's deepest water marina, located on the secluded west shore of Cavanaugh Bay just 5 miles north of Coolin, Idaho. We offer all-season deep-water moorage in covered and uncovered slips with access for the physically challenged, inside secured storage, a wide variety of modern boat rentals, lakeside lodging and The Waterfront Restaurant & Wine Bar specializing in Northwest Cuisine, fine wines, and craft beers.

"Thank you so much...”

“our stay with you was a much needed break. We enjoyed the beauty, fantastic weather, and your kind hospitality. We hope to return soon. With appreciation”

—R and M. Otis Orchards, WA
Outdoor Activities


Recreational opportunities abound year-round at Blue Diamond and in the surrounding Priest Lake area.

Summer activities include water sports, fishing for trophy Mackinaw Trout, hiking, biking, photography, river running, golfing and huckleberry picking.

Fall and winter weather turns recreational pursuits to such activities as hunting, mushroom gathering, ice fishing, cross country skiing, snowshoeing and snowmobiling on 400 miles of groomed trails. Click here for groomed trails update.

Blue Diamond Marina & Resort is the trailhead for the Rocky Point Trail System, part of the North Idaho Park N' Ski program. The trail winds through 4.3 miles of forest and lake view terrain. If you are staying at Blue Diamond, use of the trail is free. For day-use visitors, Park N' Ski season passes and 3-day permits are available at our office.

Location: 4.4 miles north of Coolin, adjacent to Blue Diamond Marina and Resort
Difficulty: Intermediate
Distance: 4.3 miles/6.9 kilometers
Grooming: Occasionally
Snowshoeing: Yes
Warming hut: Yes
Backcountry skiing potential: Yes
Restrooms: Yes
Dogs: Yes, allowed on leash only

Have a question?

Contact us

Blue Diamond Marina & Resort
2915 Tanglefoot Trail
Coolin, ID 83821

Phone 208-443-2240 or 800-337-4537
Fax 208-443-7104
Email info@bluediamondmarina.com

Check Availability &
Reserve Online

Did you know?

About our History

built in the early 1900s as a truck repair center
converted to a marina in the 1960s
Restored & renovated in the mid 1990s
as a modern marina
About the Owner
Carolyn Deshler
Owner & Proprietor

Carolyn first witnessed the beauty of Idaho's Crown Jewel in 1990, when she flew north to Priest Lake and landed on the grass airstrip at the end of Cavanaugh Bay.

Carolyn  Deshler

In the 34 years since, she has become an integral part of the Priest Lake community. She owns and operates two businesses, Blue Diamond Marina & Resort and Priest Lake Floral Design.

From 2006-2009, Carolyn served as President of the Priest Lake Chamber of Commerce and represented Priest Lake in the North Idaho Tourism Alliance. Currently, she serves on the Board of the International Selkirk Loop, the Priest Lake Chamber of Commerce and the Priest Lake People Helping People organization.

About the Chef
Ira Mittleman
Waterfront Restaurant Chef

Welcome 4-Star Chef Ira Mittleman from Littlerock, Arkansas.  Ira returns to The Waterfront Restaurant and Wine Bar eager to wow you with enticing appetizers, glamorous entrees, and mouth watering desserts.  You’ll find a lot of love in every dish he prepares for you.