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Fishing Reservoir Lake: what the data says
45-acre reservoir near Montana. The lake tops out around 50 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.
Brook Trout fishing at Reservoir Lake
Start shallow in spring: brook trout sit in 2 to 15 ft that time of year. They move out to 10 to 30 ft in summer and finish the year down in 3 to 20 ft. Break off the point is the standout, a drop-off at roughly 31 ft, rated prime for summer brook trout. In summer the feeding windows fall in early morning and the evening. Summer baits: a small spoon fished deep or a trolled lake-clear wobbler + worm gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Small jigging spoon, Tungsten jig + plastic |
Cutthroat Trout fishing at Reservoir Lake
Start shallow in spring: cutthroat trout sit in 3 to 15 ft that time of year. They move out to 10 to 35 ft in summer and finish the year down in 10 to 40 ft. The spot to know is Break off the point, a drop-off in about 31 ft of water that rates prime for cutthroat trout in summer. Best bite is early morning and the evening. Tie on a trolled spoon (small) or a inline spinner and you're in the game.
| 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 |
Notable structure
- Deep basin: deep basin, around 50 ft
- Break off the point: drop-off, around 31 ft
- Back-bay flat: weed flat, around 12 ft
- Main-lake point: point, around 10 ft
- Shallow bay flat: weed flat, around 7 ft
Common questions
How deep is Reservoir Lake?
Reservoir Lake is about 50 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 Reservoir Lake?
Anglers target brook trout, cutthroat trout on Reservoir Lake.
Where is the best fishing spot on Reservoir Lake?
Break off the point is the top-rated area: a drop-off in about 31 ft of water that rates prime for cutthroat trout in summer. Open the map above to see every rated spot for each species and season.
When is the best time to fish Reservoir Lake?
For brook 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
Van Houten Lake · Lower Miner Lakes · Twin Lakes (Beaverhead) · Bear Lake (Beaverhead) · Baldy Lake · Lily Lake (Beaverhead)
See how Reservoir Lake stacks up: best brook trout lakes in Montana · best cutthroat trout lakes in Montana
Browse all Montana fishing maps or every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. For fishing guidance only, never navigation.