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Fishing Koosharem Reservoir: what the data says
346-acre reservoir near Utah. The lake tops out around 12 ft. The contours are modeled from the water's real shoreline and maximum depth. Treat them as a rough guide, and never use them for navigation. Here is how the season plays out for each species, straight from the data behind the map.
Cutthroat Trout fishing at Koosharem Reservoir
In spring, cutthroat trout run shallow here, mostly 2 to 12 ft. Summer fish stay in 3 to 12 ft, and winter fish hold in 3 to 12 ft. If you only fish one area, make it Break off the point: a drop-off around 5 ft that scores prime in summer. In summer the feeding windows fall in 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 | 2 to 12 ft | dawn & dusk | Inline spinner (silver/gold), Small spoon |
| Summer | 3 to 12 ft | dawn & dusk | Trolled spoon (small), Inline spinner |
| Fall | 2 to 12 ft | dawn & dusk | Casting spoon, Inline spinner |
| Winter | 3 to 12 ft | dawn | Small jigging spoon, Marabou jig |
Rainbow Trout fishing at Koosharem Reservoir
In spring, rainbow trout run shallow here, mostly 3 to 12 ft. Summer fish stay in 3 to 12 ft, and winter fish hold in 2 to 12 ft. Break off the point is the standout, a drop-off at roughly 5 ft, rated prime for winter rainbow trout. Best bite is early morning and the evening. Tie on a dodger + spoon (deep troll) or a flutter spoon and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Inline spinner (silver), Small spoon |
| Summer | 3 to 12 ft | dawn & dusk | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 3 to 12 ft | dawn & dusk | Casting spoon, Jerkbait over shoals |
| Winter | 2 to 12 ft | dawn | Jigging spoon, Tube jig (white) |
Brook Trout fishing at Koosharem Reservoir
Start shallow in spring: brook trout sit in 2 to 12 ft that time of year. Summer fish stay in 4 to 12 ft, and winter fish hold in 2 to 12 ft. If you only fish one area, make it Deep basin: a deep basin around 10 ft that scores prime in summer. 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 12 ft | dawn & dusk | Small inline spinner (gold), Tiny spoon |
| Summer | 4 to 12 ft | dawn & dusk | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 12 ft | midday & dawn | Small spoon (orange), Spinner |
| Winter | 2 to 12 ft | dawn | Small jigging spoon, Tungsten jig + plastic |
Splake fishing at Koosharem Reservoir
Start shallow in spring: splake sit in 2 to 12 ft that time of year. Summer fish stay in 4 to 12 ft, and winter fish hold in 3 to 12 ft. Break off the point is the standout, a drop-off at roughly 5 ft, rated prime for summer splake. In summer the feeding windows fall in early morning and the evening. Summer baits: a trolled spoon at the thermocline or a white tube jig (deep) gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 12 ft | dawn & dusk | Small casting spoon (gold/orange), Inline spinner |
| Summer | 4 to 12 ft | dawn & dusk | Trolled spoon at the thermocline, White tube jig (deep) |
| Fall | 3 to 12 ft | dawn & dusk | Casting spoon, Jerkbait |
| Winter | 3 to 12 ft | dawn | Jigging spoon tipped with minnow head, Small white tube |
Notable structure
- Deep basin: deep basin, around 10 ft
- Main-lake point: point, around 8 ft
- Secondary point: point, around 8 ft
- Break off the point: drop-off, around 5 ft
- Shallow bay flat: weed flat, around 3 ft
- Back-bay flat: weed flat, around 3 ft
Common questions
How deep is Koosharem Reservoir?
Koosharem Reservoir is about 12 ft at its deepest point. The contours here are modeled from the water's real shape and maximum depth, so treat them as a rough guide.
What fish are in Koosharem Reservoir?
Anglers target rainbow trout, brook trout, cutthroat trout, splake on Koosharem Reservoir.
Where is the best fishing spot on Koosharem Reservoir?
Break off the point is the top-rated area: a drop-off in about 5 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 Koosharem Reservoir?
For cutthroat 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 · Johnson Reservoir · Mill Meadow Reservoir · Forsyth Reservoir · Otter Creek Reservoir · Piute Reservoir
See how Koosharem Reservoir stacks up: best rainbow trout lakes in Utah · best brook trout lakes in Utah · best cutthroat trout lakes in Utah · best splake lakes in Utah
Browse all Utah fishing maps or every water on DepthScout. How we build these maps. For fishing guidance only, never navigation.