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Fishing Diamond Lake: what the data says
700-acre lake near Diamond Lake. The lake tops out around 55 ft. The depth chart is built from real state fisheries GPS surveys, so the humps, channels and drop-offs you see are measured, not guessed. Below is the species-by-species picture, pulled from the same data the map uses.
Brown Trout fishing at Diamond Lake
In spring, brown trout run shallow here, mostly 3 to 25 ft. They move out to 17 to 55 ft in summer and finish the year down in 5 to 35 ft. If you only fish one area, make it Break off the point: a drop-off around 45 ft that scores prime in summer. Best bite is after dark and early morning. Summer baits: a spoon at the thermocline or a deep stickbait (night) gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Summer | 17 to 55 ft | night & dawn | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 5 to 30 ft | dusk & dawn | Jerkbait over gravel, Casting spoon |
| Winter | 5 to 35 ft | dawn | Jigging spoon, Small stickbait (slow) |
Cutthroat Trout fishing at Diamond Lake
Start shallow in spring: cutthroat trout sit in 3 to 15 ft that time of year. By summer they slide out to 10 to 35 ft, and by winter most fish are in 10 to 40 ft. If you only fish one area, make it Main-lake point: a point around 3 ft that scores prime in spring. In summer the feeding windows fall in early morning and the evening. A trolled spoon (small) or a inline spinner covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 15 ft | dawn & dusk | Inline spinner (silver/gold), Small spoon |
| Summer | 10 to 35 ft | dawn & dusk | Trolled spoon (small), Inline spinner |
| Fall | 5 to 25 ft | dawn & dusk | Casting spoon, Inline spinner |
| Winter | 10 to 40 ft | dawn | Small jigging spoon, Marabou jig |
Rainbow Trout fishing at Diamond Lake
Start shallow in spring: rainbow trout sit in 5 to 20 ft that time of year. By summer they slide out to 8 to 30 ft, and by winter most fish are in 8 to 40 ft. If you only fish one area, make it Break off the point: a drop-off around 45 ft that scores prime in winter. In summer the feeding windows fall in early morning and the evening. A dodger + spoon (deep troll) or a flutter spoon covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Jigging spoon, Tube jig (white) |
Notable structure
- Deep basin: deep basin, around 55 ft
- Break off the point: drop-off, around 45 ft
- Shallow bay flat: weed flat, around 8 ft
- Main-lake point: point, around 3 ft
- Back-bay flat: weed flat, around 3 ft
Common questions
How deep is Diamond Lake?
Diamond Lake is about 55 ft at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
What fish are in Diamond Lake?
Anglers target rainbow trout, brown trout, cutthroat trout on Diamond Lake.
Where is the best fishing spot on Diamond Lake?
Break off the point is the top-rated area: a drop-off in about 45 ft of water that rates prime for brown trout in summer. Open the map above to see every rated spot for each species and season.
When is the best time to fish Diamond Lake?
For brown trout, the summer bite is best in after dark and early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Nearby waters
Sacheen Lake · Davis Lake · Marshall Lake · Eloika Lake · Fan Lake · South Skookum Lake
See how Diamond Lake stacks up: best rainbow trout lakes in Washington · best brown trout lakes in Washington · best cutthroat trout lakes in Washington
Browse all Washington fishing maps or every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. For fishing guidance only, never navigation.