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33-acre pond near Alton. NH GRANIT / NH Fish & Game survey water. The lake tops out around 6 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.
Traced from the shoreline, Marsh Pond (Mill Pond) runs 33 acres with 1 miles of edge. At index 1.2 the outline is almost a bowl — read the depth changes, not the shoreline. All of it is shallow-zone water — under ~15 ft across the entire basin, so the food chain has the run of the place. Call it 0.3 mi long by 0.3 mi wide at the broadest reach. The water lies in Belknap County. For a second option, Marsh Pond lies 2 mi east.
Start shallow in spring: rainbow trout sit in 2 to 6 ft that time of year. They don't go far with the seasons — 2 to 6 ft covers summer, 1 to 6 ft covers winter. Top water on the chart: Break off the point, a drop-off in the 5 ft range, prime in winter. Fish it in early morning and the evening and you'll meet the bite. Throw a dodger + spoon (deep troll) or a flutter spoon until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 6 ft | dawn & dusk | Main-lake point (3 ft) | Inline spinner (silver), Small spoon |
| Summer | 2 to 6 ft | dawn & dusk | Break off the point (5 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 2 to 6 ft | dawn & dusk | Main-lake point (3 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 1 to 6 ft | dawn | Break off the point (5 ft) | Jigging spoon, Tube jig (white) |
Early season yellow perch use the shallows, holding in 2 to 6 ft. Even in summer they hold at 2 to 6 ft; winter keeps them in 2 to 6 ft. Put Shallow bay flat first on the milk run — a weed flat near 2 ft that grades prime for spring. In summer the feeding windows fall in early morning. Tie on a drop-shot micro plastics or a small spoon tipped with worm and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 6 ft | midday & dawn | Shallow bay flat (2 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 2 to 6 ft | dawn | Deep basin (6 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 2 to 6 ft | midday | Deep basin (6 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 2 to 6 ft | midday & dawn | Deep basin (6 ft) | Tungsten jig + spikes, Rattle spoon (small) |
In spring, smallmouth bass run shallow here, mostly 2 to 6 ft. Summer keeps them at 2 to 6 ft, and they winter in 2 to 6 ft. Main-lake point is the standout, a point at roughly 3 ft, rated prime for fall 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 | 2 to 6 ft | dawn & dusk | Main-lake point (3 ft) | Ned rig, Tube jig |
| Summer | 2 to 6 ft | dawn & dusk | Break off the point (5 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 2 to 6 ft | midday & dawn | Main-lake point (3 ft) | Jerkbait, Blade bait |
| Winter | 2 to 6 ft | midday | Break off the point (5 ft) | Blade bait, Hair jig |
Spring puts largemouth bass in skinny water — 1 to 6 ft is the zone. Summer fish stay in 2 to 6 ft, and winter fish hold in 2 to 6 ft. Spring largemouth bass concentrate at Shallow bay flat, a prime-rated weed flat around 2 ft. Warm-month bites cluster around early morning and the evening. A texas-rigged 10" worm or a deep-diving crankbait covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 6 ft | dawn & dusk | Shallow bay flat (2 ft) | Spinnerbait, Chatterbait |
| Summer | 2 to 6 ft | dawn & dusk | Shallow bay flat (2 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 2 to 6 ft | midday & dawn | Main-lake point (3 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 2 to 6 ft | midday | Break off the point (5 ft) | Blade bait, Jigging spoon |
The spring pattern is a shallow one: white perch in 2 to 6 ft. The depth story barely changes: 2 to 6 ft through summer, 2 to 6 ft in winter. The spot to know is Deep basin, a deep basin in about 6 ft of water that rates prime for white perch in summer. Plan around early morning in the warm months. Summer baits: a small spinner rig drifted or a 1/8 oz jigging spoon gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 6 ft | dusk | Shallow bay flat (2 ft) | Small jig + curly tail, Inline spinner (silver) |
| Summer | 2 to 6 ft | dawn | Deep basin (6 ft) | Small spinner rig drifted, 1/8 oz jigging spoon |
| Fall | 2 to 6 ft | midday | Deep basin (6 ft) | Jigging spoon (small), Blade bait |
| Winter | 2 to 6 ft | dusk | Deep basin (6 ft) | Small rattle spoon, Tungsten + spikes |
In spring, crappie run shallow here, mostly 2 to 6 ft. Summer keeps them at 2 to 6 ft, and they winter in 2 to 6 ft. Deep basin is the standout, a deep basin at roughly 6 ft, rated prime for winter crappie. Time it for early morning and the evening. You won't need more than a jig trolled/spider-rigged or a small crankbait (trolled) most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 6 ft | midday & dawn | Shallow bay flat (2 ft) | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 2 to 6 ft | dawn & dusk | Shallow bay flat (2 ft) | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 2 to 6 ft | dawn | Shallow bay flat (2 ft) | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 2 to 6 ft | midday | Deep basin (6 ft) | Tungsten jig + soft plastic, Tiny jigging spoon |
Marsh Pond (Mill Pond) also holds bluegill (2 to 6 ft in summer), brown bullhead (2 to 6 ft in summer), chain pickerel (1 to 6 ft in summer). Pick any of them on the map above for rated spots and bait picks.
5 pieces of structure are mapped here — Deep basin, around 6 ft, is the deepest of them.
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 Marsh Pond (Mill Pond) specifically, so confirm the current rules before you fish.
Check the official New Hampshire fishing regulations →
Marsh Pond (Mill Pond) is about 6 ft (2 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 rainbow trout, yellow perch, smallmouth bass, largemouth bass, white perch, crappie, bluegill, brown bullhead, chain pickerel on Marsh Pond (Mill Pond). This isn't a survey of the lake — none is on record for it — but an informed estimate from the species listed for the nearest surveyed lakes in the region, filtered to this lake's depth and habitat.
Shallow bay flat is the top-rated area: a weed flat in about 2 ft of water that rates prime for yellow perch in spring. Every other rated spot, per species and season, is on the map above.
For rainbow 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 Marsh Pond (Mill Pond) 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.
Marsh Pond 2 mi · Jones Dam Pond 3 mi · BEAR POND (BELKNAP) 3 mi · DOWNING POND 3 mi · Gilman Pond 4 mi · Sunset Lake 4 mi · Merrymeeting Lake 4 mi · CLUB POND 4 mi · Hills Pond 4 mi · Crystal Lake 4 mi · Halfmoon Lake 5 mi · CHALK POND (STRAFFORD) 5 mi
See how Marsh Pond (Mill Pond) stacks up: best largemouth bass lakes in New Hampshire · best smallmouth bass lakes in New Hampshire · best crappie lakes in New Hampshire · best bluegill lakes in New Hampshire
More water nearby: Belknap County fishing maps (43 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.