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Fishing Ashton Reservoir: what the data says
372-acre reservoir near Fremont. The lake tops out around 26 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. What follows comes from the same scoring engine that paints the spots above.
Cutthroat Trout fishing at Ashton Reservoir
Spring cutthroat trout on Ashton Reservoir hold shallow, usually 3 to 15 ft. Summer pushes them deeper, 7 to 26 ft, and winter fish settle into 7 to 26 ft. The spot to know is Main-lake point, a point in about 8 ft of water that rates prime for cutthroat trout in fall. Best bite is 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 | 7 to 26 ft | dawn & dusk | Trolled spoon (small), Inline spinner |
| Fall | 5 to 25 ft | dawn & dusk | Casting spoon, Inline spinner |
| Winter | 7 to 26 ft | dawn | Small jigging spoon, Marabou jig |
Rainbow Trout fishing at Ashton Reservoir
Start shallow in spring: rainbow trout sit in 5 to 20 ft that time of year. Summer pushes them deeper, 7 to 26 ft, and winter fish settle into 5 to 26 ft. If you only fish one area, make it Main-lake point: a point around 8 ft that scores prime in spring. Best bite is 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 | 7 to 26 ft | dawn & dusk | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 7 to 26 ft | dawn & dusk | Casting spoon, Jerkbait over shoals |
| Winter | 5 to 26 ft | dawn | Jigging spoon, Tube jig (white) |
Notable structure
- Deep basin: deep basin, around 22 ft
- Main-lake point: point, around 8 ft
- Secondary point: point, around 8 ft
- Shallow bay flat: weed flat, around 3 ft
- Back-bay flat: weed flat, around 3 ft
Common questions
How deep is Ashton Reservoir?
Ashton Reservoir is about 26 ft (8 m) deep 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 Ashton Reservoir?
Anglers target rainbow trout, cutthroat trout on Ashton Reservoir.
Where is the best fishing spot on Ashton Reservoir?
Main-lake point is the top-rated area: a point in about 8 ft of water that rates prime for cutthroat trout in fall. Open the map above to see every rated spot for each species and season.
When is the best time to fish Ashton 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
Henrys Fork · Henrys Lake · Snake River (South Fork) · Palisades Reservoir · Chesterfield Reservoir · American Falls Reservoir
See how Ashton Reservoir stacks up: best rainbow trout lakes in Idaho · best cutthroat trout lakes in Idaho
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