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481-acre lake near Harrisville. NH GRANIT / NH Fish & Game survey water. The lake tops out around 90 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. The season-by-season read for each species follows, from the map's own numbers.
The drawn water covers 481 acres wrapped in 3.9 miles of bank. Nearly circular (index 1.3), so the story is the bottom, not the bank. Roughly 26% of the water is 15 ft or less, the band where the food chain lives. End to end it runs roughly 1.6 mi, about 0.7 mi across. It sits in Cheshire County. If the bite dies, Childs Bog is 1 mi to the east.
When the water first warms, lake trout slide up into 10 to 40 ft. By summer they slide out to 27 to 90 ft, and by winter most fish are in 20 to 80 ft. If you only fish one area, make it Deep basin: a deep basin around 89 ft that scores prime in summer. In summer the feeding windows fall in early morning. Keep a white tube jig (deep) or a magnum spoon on downrigger rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | open water | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 27 to 90 ft | dawn | Deep basin (89 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | open water | Heavy casting spoon, Jigging rap over reefs |
| Winter | 20 to 80 ft | dawn | Deep basin (89 ft) | White tube jig, Airplane jig |
Spring rainbow trout on Silver Lake (Harrisville) hold shallow, usually 5 to 20 ft. By summer they slide out to 8 to 30 ft, and by winter most fish are in 8 to 40 ft. The chart's best answer is Shallow bay flat — weed flat, 13 ft, good for spring. Prime time lands in early morning and the evening. The summer box starts with a dodger + spoon (deep troll) or a flutter spoon.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Shallow bay flat (13 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Shallow bay flat (13 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | open water | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | open water | Jigging spoon, Tube jig (white) |
When the water first warms, smallmouth bass slide up into 3 to 12 ft. Summer is a 10 to 30 ft game here, winter a 20 to 45 ft one. The feeding windows run early morning and the evening. Keep a drop shot (goby/minnow) or a ned rig rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | open water | 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 | open water | Jerkbait, Blade bait |
| Winter | 20 to 45 ft | midday | open water | Blade bait, Hair jig |
Come spring, look for brown bullhead tight to the bank in 2 to 8 ft. Expect a summer slide to 3 to 12 ft, then a winter hold in 10 to 25 ft. Start at Back-bay flat. It's a weed flat holding about 11 ft of water and rates prime come summer. Prime time lands in after dark and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | dusk & night | Back-bay flat (11 ft) | |
| Summer | 3 to 12 ft | night & dusk | Back-bay flat (11 ft) | |
| Fall | 5 to 15 ft | dusk | Shallow bay flat (13 ft) | |
| Winter | 10 to 25 ft | midday | Deep basin (89 ft) |
Start shallow in spring: chain pickerel sit in 2 to 10 ft that time of year. Warm water sends them out to 3 to 15 ft; cold water stacks them in 5 to 18 ft. Top water on the chart: Shallow bay flat, a weed flat in the 13 ft range, prime in winter. Fish it in early morning and the evening and you'll meet the bite. Throw a weedless spoon + trailer or a buzzbait until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | Back-bay flat (11 ft) | Inline spinner (silver), Small spoon (red/white) |
| Summer | 3 to 15 ft | dawn & dusk | Shallow bay flat (13 ft) | Weedless spoon + trailer, Buzzbait |
| Fall | 4 to 15 ft | midday & dawn | Shallow bay flat (13 ft) | Jerkbait along weed edges, Spinnerbait |
| Winter | 5 to 18 ft | dawn | Shallow bay flat (13 ft) | Jigging spoon (through ice) |
Count 5 structure marks on this chart. The deepest, Deep basin, sits near 89 ft.
Access data: New Hampshire Fish & Game — Public Access Sites. Confirm conditions and fees locally before you launch.
Season dates, license requirements, and size and bag limits for New Hampshire waters are set by the New Hampshire Fish and Game — and special regulations can apply to Silver Lake (Harrisville) specifically, so confirm the current rules before you fish.
Check the official New Hampshire fishing regulations →
Silver Lake (Harrisville) is about 90 ft (27 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
Anglers target lake trout, rainbow trout, smallmouth bass, brown bullhead, chain pickerel on Silver Lake (Harrisville).
Deep basin is the top-rated area: a deep basin in about 89 ft of water that rates prime for lake trout in summer. The interactive chart above rates every spot for each species and season.
For lake trout, the summer bite is best in early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Silver Lake (Harrisville) is regulated by the New Hampshire Fish and Game. Check the official New Hampshire regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Childs Bog 1 mi · SEAVER RESERVOIR 1 mi · Chesham Pond 2 mi · Center Pond 2 mi · Harrisville Pond 2 mi · RUSSELL RESERVOIR 2 mi · Howe Reservoir 3 mi · Lake Skatutakee 4 mi · Spoonwood Lake 4 mi · Nubanusit Lake 4 mi · Granite Lake 4 mi · Babbidge Reservoir 4 mi
See how Silver Lake (Harrisville) stacks up: best smallmouth bass lakes in New Hampshire · best rainbow trout lakes in New Hampshire · best lake trout lakes in New Hampshire · best chain pickerel lakes in New Hampshire
More water nearby: Cheshire County fishing maps (61 charts). Browse all New Hampshire fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. 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.