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7,850-acre reservoir near Errol. The lake tops out around 35 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. Every species below gets its seasonal read from the same numbers driving the chart.
Traced from the shoreline, Umbagog Lake runs 7,623 acres with 62.4 miles of edge, with 25 islands in the mix. A development index of 5.1 means a maze of bays and points: far more casting targets than a round bowl of the same size. Roughly 90% of the water is 15 ft or less, the band where the food chain lives. Call it 8.2 mi long by 4.2 mi wide at the broadest reach. The water lies in Coos County. The nearest mapped water is Akers Pond, 6 mi to the northwest.
Spring puts smallmouth bass in skinny water — 3 to 12 ft is the zone. As the season builds they drop to 10 to 30 ft, wintering in 11 to 35 ft. Winter smallmouth bass concentrate at Sharp break, a prime-rated drop-off around 19 ft. Warm-month bites cluster around early morning and the evening. A drop shot (goby/minnow) or a ned rig covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Gravel shoal (4 ft) | Ned rig, Tube jig |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (10 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Break off the point (10 ft) | Jerkbait, Blade bait |
| Winter | 11 to 35 ft | midday | Sharp break (19 ft) | Blade bait, Hair jig |
The spring pattern is a shallow one: rainbow trout in 5 to 20 ft. Midsummer fish sit out in 8 to 30 ft before dropping to 7 to 35 ft for winter. The spot to know is Break off the point, a drop-off in about 10 ft of water that rates prime for rainbow trout in winter. Plan around early morning and the evening in the warm months. Summer baits: a dodger + spoon (deep troll) or a flutter spoon gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Shoreline point (6 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Break off the point (10 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Gravel shoal (4 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 7 to 35 ft | dawn | Break off the point (10 ft) | Jigging spoon, Tube jig (white) |
Spring yellow perch on Umbagog Lake hold shallow, usually 3 to 12 ft. By summer they slide out to 10 to 30 ft, and by winter most fish are in 15 to 35 ft. The chart's best answer is Weed flat — weed flat, 6 ft, prime for spring. Prime time lands in early morning. The summer box starts with a drop-shot micro plastics or a small spoon tipped with worm.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Weed flat (6 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Break off the point (10 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Deep basin (33 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Deep basin (33 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Early season chain pickerel use the shallows, holding in 2 to 10 ft. Expect a summer slide to 3 to 15 ft, then a winter hold in 5 to 18 ft. Put Weed flat first on the milk run — a weed flat near 6 ft that grades prime for spring. In summer the feeding windows fall in early morning and the evening. Tie on a weedless spoon + trailer or a buzzbait and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | Weed flat (6 ft) | Inline spinner (silver), Small spoon (red/white) |
| Summer | 3 to 15 ft | dawn & dusk | Weed flat (6 ft) | Weedless spoon + trailer, Buzzbait |
| Fall | 4 to 15 ft | midday & dawn | Weed flat (6 ft) | Jerkbait along weed edges, Spinnerbait |
| Winter | 5 to 18 ft | dawn | Weed flat (6 ft) | Jigging spoon (through ice) |
The spring pattern is a shallow one: brown bullhead in 2 to 8 ft. As the season builds they drop to 3 to 12 ft, wintering in 10 to 25 ft. Top water on the chart: Weed flat, a weed flat in the 6 ft range, prime in spring. Time it for after dark and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | dusk & night | Weed flat (6 ft) | |
| Summer | 3 to 12 ft | night & dusk | Weed flat (6 ft) | |
| Fall | 5 to 15 ft | dusk | Weed flat (6 ft) | |
| Winter | 10 to 25 ft | midday | Deep basin (33 ft) |
The spring pattern is a shallow one: landlocked salmon in 1 to 15 ft. Midsummer fish sit out in 11 to 35 ft before dropping to 9 to 35 ft for winter. The spot to know is Deep basin, a deep basin in about 33 ft of water that rates prime for landlocked salmon in summer. Plan around early morning and the evening in the warm months. Summer baits: a dodger + streamer down deep or a thin spoon on lead core gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 15 ft | dawn & dusk | Main-lake point (1 ft) | Streamer flies (Grey Ghost) off boards, Thin spoon (Mooselook style) |
| Summer | 11 to 35 ft | dawn & dusk | Deep basin (33 ft) | Dodger + streamer down deep, Thin spoon on lead core |
| Fall | 5 to 30 ft | dawn & dusk | Shoreline point (6 ft) | Casting spoon at the mouths, Streamers |
| Winter | 9 to 35 ft | dawn | Deep basin (33 ft) | Small jigging spoon, Swedish pimple + smelt |
Umbagog Lake also holds largemouth bass (8 to 20 ft in summer), pumpkinseed (2 to 10 ft in summer), brook trout (10 to 30 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Count 15 structure marks on this chart. The deepest, Deep basin, sits near 33 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 Umbagog Lake specifically, so confirm the current rules before you fish.
Check the official New Hampshire fishing regulations →
Umbagog Lake is about 35 ft (11 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 smallmouth bass, rainbow trout, yellow perch, chain pickerel, brown bullhead, landlocked salmon, largemouth bass, pumpkinseed, brook trout on Umbagog Lake.
Sharp break is the top-rated area: a drop-off in about 19 ft of water that rates prime for smallmouth bass in winter. The interactive chart above rates every spot for each species and season.
For smallmouth 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.
Fishing on Umbagog 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.
Akers Pond 6 mi, NH · Greenough Pond 7 mi, NH · Greenough Pond, Little 7 mi, NH · Munn Pond 7 mi, NH · Sturtevant Pond 7 mi, ME · Androscoggin River 8 mi, NH · SESSIONS POND 8 mi, NH · C Pond 9 mi, ME · York Pond 10 mi, ME · Millsfield Pond 11 mi, NH · Surplus Pond 11 mi, ME · Dummer Pond, Big 13 mi, NH
See how Umbagog Lake stacks up: best largemouth bass lakes in New Hampshire · best smallmouth bass lakes in New Hampshire · best rainbow trout lakes in New Hampshire · best yellow perch lakes in New Hampshire
More water nearby: Coos County fishing maps (40 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.