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174-acre lake near Croydon. NH GRANIT / NH Fish & Game survey water. The lake tops out around 20 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. What follows comes from the same scoring engine that paints the spots above.
The outline encloses 174 acres, worked by 2.4 miles of shoreline. Nearly circular (index 1.3), so the story is the bottom, not the bank. About 55% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. The basin spans about 1 mi end to end and 0.4 mi across at its widest. It sits in Sullivan County. If the bite dies, Rockybound Pond is 1 mi to the west.
Spring brook trout on Coniston Lake hold shallow, usually 2 to 15 ft. By summer they slide out to 6 to 20 ft, and by winter most fish are in 3 to 20 ft. The chart's best answer is Deep basin — deep basin, 20 ft, prime for summer. Prime time lands in early morning and the evening. The summer box starts with a small spoon fished deep or a trolled lake-clear wobbler + worm.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Shallow bay flat (6 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 6 to 20 ft | dawn & dusk | Deep basin (20 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | open water | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Deep basin (20 ft) | Small jigging spoon, Tungsten jig + plastic |
Early season rainbow trout use the shallows, holding in 5 to 20 ft. Even in summer they hold at 5 to 20 ft; winter keeps them in 4 to 20 ft. Put Deep basin first on the milk run — a deep basin near 20 ft that grades prime for winter. In summer the feeding windows fall in 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 | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Shallow bay flat (6 ft) | Inline spinner (silver), Small spoon |
| Summer | 5 to 20 ft | dawn & dusk | Deep basin (20 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 6 to 20 ft | dawn & dusk | Deep basin (20 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 4 to 20 ft | dawn | Deep basin (20 ft) | Jigging spoon, Tube jig (white) |
Coniston Lake carries 3 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 20 ft down.
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 Coniston Lake specifically, so confirm the current rules before you fish.
Check the official New Hampshire fishing regulations →
Coniston Lake is about 20 ft (6 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 brook trout, rainbow trout on Coniston Lake.
Deep basin is the top-rated area: a deep basin in about 20 ft of water that rates prime for brook trout in summer. Open the map above to see every rated spot for each species and season.
For brook 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.
Fishing on Coniston Lake 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.
Rockybound Pond 1 mi · Ledge Pond 2 mi · Stocker Pond 2 mi · Perkins Pond 3 mi · Otter Pond 3 mi · DUTCHMAN POND 5 mi · Sunapee Lake, Little 5 mi · Eastman Pond 5 mi · MORGAN POND 5 mi · Lake Sunapee 6 mi · Messer Pond 7 mi · COLE POND 8 mi
See how Coniston Lake stacks up: best rainbow trout lakes in New Hampshire · best brook trout lakes in New Hampshire
More water nearby: Sullivan County fishing maps (24 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.