Diamond Lake is best known for rainbow trout, with Mount Bailey and Mount Thielsen framing the water. It's a fairly shallow mountain lake for its roughly 3,200 acres. You can start fishing without needing to find a deep canyon or bring heavy open-water tackle.
Lake facts
- Size: Roughly 3,200 acres in Forest Service watershed information
- Depth: About 24 feet on average and 52 feet maximum in that reference
- Main fish: Rainbow trout; brown trout and tiger trout must be released
Where to fish
From shore, look for public access with a clear casting lane past the plants. Boat anglers can work the outside of weed growth and move between feeding water and slightly deeper stretches. Change depth or retrieve along a promising area before moving to the other side of the lake. Small trout lures and permitted bait give you several ways to try it.
Fishing tips and rules
Brown and tiger trout must be released. They help control unwanted fish, so learn to identify them before putting a trout on a stringer. Rainbows are the main fish to plan a meal around, under current limits. An October 7, 2026 notice concerned repairs to the fish-cleaning station, rather than closure of the lake.
Camping and lake access
Campgrounds and lakeside recreation make this a place to stay for more than a quick session. A picnic or shore walk can fill the quieter part of the day. Check current campground and facility operation, and keep an eye on the wind; even a shallow lake can give a small boat a rough ride back.
Nearby fishing waters
Explore nearby waters, including local Featured destinations. Check each page for access and fishing restrictions.
Distances are straight-line estimates between mapped water locations.