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Fishing West Thompson Reservoir: what the data says
360-acre reservoir near Thompson. CT DEEP survey water. The lake tops out around 30 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.
Largemouth Bass fishing at West Thompson Reservoir
In spring, largemouth bass run shallow here, mostly 2 to 10 ft. By summer they slide out to 8 to 20 ft, and by winter most fish are in 9 to 30 ft. The spot to know is Shallow bay flat, a weed flat in about 4 ft of water that rates prime for largemouth bass in spring. Best bite is early morning and the evening. A texas-rigged 10" worm or a deep-diving crankbait covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Spinnerbait, Chatterbait |
| Summer | 8 to 20 ft | dawn & dusk | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Squarebill crankbait (shad), Spinnerbait |
| Winter | 9 to 30 ft | midday | Blade bait, Jigging spoon |
Yellow Perch fishing at West Thompson Reservoir
In spring, yellow perch run shallow here, mostly 3 to 12 ft. They move out to 10 to 30 ft in summer and finish the year down in 9 to 30 ft. Shallow bay flat is the standout, a weed flat at roughly 4 ft, rated prime for spring yellow perch. Plan around early morning in the warm months. A drop-shot micro plastics or a small spoon tipped with worm covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 9 to 30 ft | midday | Jigging spoon (small), Perch rig / spreader |
| Winter | 9 to 30 ft | midday & dawn | Tungsten jig + spikes, Rattle spoon (small) |
Chain Pickerel fishing at West Thompson Reservoir
Spring chain pickerel on West Thompson Reservoir hold shallow, usually 2 to 10 ft. They move out to 3 to 15 ft in summer and finish the year down in 5 to 18 ft. The spot to know is Shallow bay flat, a weed flat in about 4 ft of water that rates prime for chain pickerel in spring. In summer the feeding windows fall in early morning and the evening. A weedless spoon + trailer or a buzzbait covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | Inline spinner (silver), Small spoon (red/white) |
| Summer | 3 to 15 ft | dawn & dusk | Weedless spoon + trailer, Buzzbait |
| Fall | 4 to 15 ft | midday & dawn | Jerkbait along weed edges, Spinnerbait |
| Winter | 5 to 18 ft | dawn | Jigging spoon (through ice) |
Bluegill fishing at West Thompson Reservoir
Start shallow in spring: bluegill sit in 1 to 6 ft that time of year. Summer pushes them deeper, 4 to 15 ft, and winter fish settle into 10 to 25 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 4 ft that scores prime in spring. Best bite is early morning and the evening. A small sponge spider (fly) or a micro tube jig covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 1 to 6 ft | midday & dusk | 1/32 oz jig + micro plastic, Tiny popper (evenings) |
| Summer | 4 to 15 ft | dawn & dusk | Small sponge spider (fly), Micro tube jig |
| Fall | 6 to 18 ft | midday | Micro jig + waxworm, Small spoon tipped |
| Winter | 10 to 25 ft | midday | Tungsten ice jig + plastic, Tiny spoon |
Smallmouth Bass fishing at West Thompson Reservoir
In spring, smallmouth bass run shallow here, mostly 3 to 12 ft. By summer they slide out to 10 to 30 ft, and by winter most fish are in 9 to 30 ft. The spot to know is Break off the point, a drop-off in about 10 ft of water that rates prime for smallmouth bass in winter. Best bite is early morning and the evening. A drop shot (goby/minnow) or a ned rig covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Ned rig, Tube jig |
| Summer | 10 to 30 ft | dawn & dusk | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Jerkbait, Blade bait |
| Winter | 9 to 30 ft | midday | Blade bait, Hair jig |
White Perch fishing at West Thompson Reservoir
In spring, white perch run shallow here, mostly 4 to 15 ft. Summer pushes them deeper, 9 to 30 ft, and winter fish settle into 9 to 30 ft. The spot to know is Deep basin, a deep basin in about 25 ft of water that rates prime for white perch in summer. In summer the feeding windows fall in early morning. A small spinner rig drifted or a 1/8 oz jigging spoon covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 4 to 15 ft | dusk | Small jig + curly tail, Inline spinner (silver) |
| Summer | 9 to 30 ft | dawn | Small spinner rig drifted, 1/8 oz jigging spoon |
| Fall | 9 to 30 ft | midday | Jigging spoon (small), Blade bait |
| Winter | 9 to 30 ft | dusk | Small rattle spoon, Tungsten + spikes |
West Thompson Reservoir also holds brown trout (9 to 30 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Notable structure
- Deep basin: deep basin, around 25 ft
- Break off the point: drop-off, around 10 ft
- Main-lake point: point, around 4 ft
- Shallow bay flat: weed flat, around 4 ft
- Back-bay flat: weed flat, around 4 ft
- Secondary point: point, around 3 ft
Common questions
How deep is West Thompson Reservoir?
West Thompson Reservoir is about 30 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 West Thompson Reservoir?
Anglers target largemouth bass, smallmouth bass, bluegill, yellow perch, brown trout, chain pickerel, white perch on West Thompson Reservoir.
Where is the best fishing spot on West Thompson Reservoir?
Shallow bay flat is the top-rated area: a weed flat in about 4 ft of water that rates prime for largemouth bass in spring. Open the map above to see every rated spot for each species and season.
When is the best time to fish West Thompson Reservoir?
For largemouth bass, 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
Roseland Lake · Quaddick Reservoir, Lower · Quaddick Reservoir, Middle · Little Pond · Quaddick Reservoir, Upper (Stump Pond) · Alexander Lake
See how West Thompson Reservoir stacks up: best largemouth bass lakes in Connecticut · best smallmouth bass lakes in Connecticut · best bluegill lakes in Connecticut · best yellow perch lakes in Connecticut
Browse all Connecticut fishing maps or every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. For fishing guidance only, never navigation.