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Fishing Fourmile Lake: what the data says
629-acre reservoir near Fort Klamath. The lake tops out around 160 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.
Rainbow Trout fishing at Fourmile Lake
Spring rainbow trout on Fourmile Lake hold shallow, usually 5 to 20 ft. By summer they slide out to 8 to 30 ft, and by winter most fish are in 8 to 40 ft. The spot to know is Main-lake point, a point in about 13 ft of water that rates prime for rainbow trout in spring. In summer the feeding windows fall in early morning and the evening. Summer baits: a dodger + spoon (deep troll) or a flutter spoon gets it done.
| 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 160 ft
- Break off the point: drop-off, around 114 ft
- Main-lake point: point, around 13 ft
- Secondary point: point, around 13 ft
- Shallow bay flat: weed flat, around 11 ft
- Back-bay flat: weed flat, around 2 ft
Common questions
How deep is Fourmile Lake?
Fourmile Lake is about 160 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 Fourmile Lake?
Anglers target rainbow trout on Fourmile Lake.
Where is the best fishing spot on Fourmile Lake?
Main-lake point is the top-rated area: a point in about 13 ft of water that rates prime for rainbow trout in spring. Open the map above to see every rated spot for each species and season.
When is the best time to fish Fourmile Lake?
For rainbow trout, the summer bite is best in early morning and the evening. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Nearby waters
Fish Lake · Howard Prairie Lake · Agency Lake · Crater Lake · Miller Lake · Crescent Lake
See how Fourmile Lake stacks up: best rainbow trout lakes in Oregon
Browse all Oregon fishing maps or every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. For fishing guidance only, never navigation.