Conditions
Scored by DiveConnect's site-physics model
Marine forecast via Copernicus Marine. Score is a rule-based guide from swell/wind vs. the site's exposure — always dive your own assessment.
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About this site
Cold, clear waters of Lake McDonald offer a unique freshwater dive with rocky slopes and submerged trees. Visibility can exceed 30 feet, revealing rainbow trout and kokanee salmon. The steep shoreline creates dramatic drop-offs, while boulders and fallen timber provide shelter for crayfish. Summer brings the best conditions, though drysuit diving is recommended year-round. Quiet and secluded, this site rewards patient divers with glimpses of rare freshwater sponges.
Durable tips from divers — access, hazards, marine life, facilities. For day-of conditions, use the report tool in the conditions card above.
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