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Rating depth structure for smallmouth bass.
Shared by DepthScout anglers. Exact spots stay private, always.
1,949-acre reservoir in Windham County, Vermont. The lake tops out around 180 ft. What you see is a modeled chart: the shoreline is real, the max depth is published, and the contours between are estimated. Plan with it; don't navigate by it. Here's the year, species by species, as the scoring engine sees it.
Drawn out, this is 1,975 acres of water rimmed by 26.1 miles of bank, broken up by an island. A development index of 4.2 means a maze of bays and points: far more casting targets than a round bowl of the same size. About 42% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone. Call it 6.2 mi long by 2.5 mi wide at the broadest reach. The water lies in Windham County. Closest neighbour on DepthScout: Sadawga Lake, 3 mi south of here.
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. The spot to know is Shallow bay flat, a weed flat in about 6 ft of water that rates prime for bluegill in spring. Warm-month bites cluster around early morning and the evening. Throw a small sponge spider (fly) or a micro tube jig until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 6 ft | midday & dusk | Shallow bay flat (6 ft) | 1/32 oz jig + micro plastic, Tiny popper (evenings) |
| Summer | 4 to 15 ft | dawn & dusk | Shallow bay flat (6 ft) | Small sponge spider (fly), Micro tube jig |
| Fall | 6 to 18 ft | midday | Shallow bay flat (6 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 10 to 25 ft | midday | Deep basin (153 ft) | Tungsten ice jig + plastic, Tiny spoon |
Start shallow in spring: brown bullhead sit in 2 to 8 ft that time of year. Summer pushes them deeper, 3 to 12 ft, and winter fish settle into 10 to 25 ft. The spot to know is Shallow bay flat, a weed flat in about 6 ft of water that rates prime for brown bullhead in spring. Warm-month bites cluster around after dark and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | dusk & night | Shallow bay flat (6 ft) | |
| Summer | 3 to 12 ft | night & dusk | Shallow bay flat (6 ft) | |
| Fall | 5 to 15 ft | dusk | Shallow bay flat (6 ft) | |
| Winter | 10 to 25 ft | midday | Deep basin (153 ft) |
Spring chain pickerel on Harriman Reservoir hold shallow, usually 2 to 10 ft. By summer they slide out to 3 to 15 ft, and by winter most fish are in 5 to 18 ft. The chart's best answer is Shallow bay flat — weed flat, 6 ft, prime for spring. Prime time lands in early morning and the evening. The summer box starts with a weedless spoon + trailer or a buzzbait.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | Shallow bay flat (6 ft) | Inline spinner (silver), Small spoon (red/white) |
| Summer | 3 to 15 ft | dawn & dusk | Shallow bay flat (6 ft) | Weedless spoon + trailer, Buzzbait |
| Fall | 4 to 15 ft | midday & dawn | Shallow bay flat (6 ft) | Jerkbait along weed edges, Spinnerbait |
| Winter | 5 to 18 ft | dawn | Shallow bay flat (6 ft) | Jigging spoon (through ice) |
The spring pattern is a shallow one: lake trout in 10 to 40 ft. As the season builds they drop to 50 to 120 ft, wintering in 20 to 80 ft. Top water on the chart: Main-lake point, a point in the 45 ft range, prime in fall. Time it for early morning. Summer baits: a white tube jig (deep) or a magnum spoon on downrigger gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Main-lake point (45 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 50 to 120 ft | dawn | Deep basin (153 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Main-lake point (45 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 20 to 80 ft | dawn | Deep basin (153 ft) | White tube jig, Airplane jig |
Start shallow in spring: landlocked salmon sit in 1 to 15 ft that time of year. Warm water sends them out to 25 to 60 ft; cold water stacks them in 10 to 40 ft. Top water on the chart: Deerfield River inflow, an inflow / creek mouth in the 8 ft range, prime in spring. Fish it in early morning and the evening and you'll meet the bite. Throw a dodger + streamer down deep or a thin spoon on lead core until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 15 ft | dawn & dusk | Deerfield River inflow (8 ft) | Streamer flies (Grey Ghost) off boards, Thin spoon (Mooselook style) |
| Summer | 25 to 60 ft | dawn & dusk | Main-lake point (45 ft) | Dodger + streamer down deep, Thin spoon on lead core |
| Fall | 5 to 30 ft | dawn & dusk | Deerfield River inflow (8 ft) | Casting spoon at the mouths, Streamers |
| Winter | 10 to 40 ft | dawn | Main-lake point (45 ft) | Small jigging spoon, Swedish pimple + smelt |
In spring, smallmouth bass run shallow here, mostly 3 to 12 ft. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 20 to 45 ft. Deerfield River inflow is the standout, an inflow / creek mouth at roughly 8 ft, rated prime for spring smallmouth bass. Time it for early morning and the evening. You won't need more than a drop shot (goby/minnow) or a ned rig most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Deerfield River inflow (8 ft) | Ned rig, Tube jig |
| Summer | 10 to 30 ft | dawn & dusk | open water | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Main-lake point (45 ft) | Jerkbait, Blade bait |
| Winter | 20 to 45 ft | midday | open water | Blade bait, Hair jig |
Harriman Reservoir also holds rainbow trout (8 to 30 ft in summer). Pick any of them on the map above for rated spots and bait picks.
6 pieces of structure are mapped here — Deep basin, around 153 ft, is the deepest of them.
Season dates, license requirements, and size and bag limits for Vermont waters are set by the Vermont Fish & Wildlife — and special regulations can apply to Harriman Reservoir specifically, so confirm the current rules before you fish.
Check the official Vermont fishing regulations →
Harriman Reservoir is about 180 ft (55 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.
Anglers target bluegill, brown bullhead, chain pickerel, lake trout, landlocked salmon, smallmouth bass, rainbow trout on Harriman Reservoir.
Shallow bay flat is the top-rated area: a weed flat in about 6 ft of water that rates prime for bluegill in spring. Scroll up to the map for the complete spot list by species and season.
For bluegill, 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.
Fishing on Harriman Reservoir is regulated by the Vermont Fish & Wildlife. Check the official Vermont regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Sadawga Lake 3 mi · Lake Raponda 5 mi · South Pond 9 mi · Sunset Lake 12 mi · Somerset Reservoir 12 mi · Deerfield River 14 mi, MA · Windsor Lake 14 mi, MA · Grout Pond 15 mi · Hallockville Pond 19 mi, MA · Windsor Pond 21 mi, MA · Kilburn Pond 21 mi, NH · Pisgah Reservoir 22 mi, NH
See how Harriman Reservoir stacks up: best smallmouth bass lakes in Vermont · best bluegill lakes in Vermont · best rainbow trout lakes in Vermont · best lake trout lakes in Vermont
More water nearby: Windham County fishing maps (8 charts). Browse all Vermont fishing maps or see every water on DepthScout. How we build these maps. Fish here with a sonar unit that logs? Send us your depth data and we'll improve this chart, credited to you. For fishing guidance only, never navigation.