Mascoma Lake fishing: Rainbow Trout, Smallmouth Bass, Atlantic Salmon

Target species: Rainbow Trout, Smallmouth Bass, Atlantic Salmon, Brown Trout, Largemouth Bass
Boat: 2 ramps and launches on file for this water.
Start here: Launch at Boat Facility (near dam).

The lake

Mascoma Lake covers 1,146 acres in New Hampshire, across Grafton County. It is a lake: 92% of it is 60 feet deep or less; the deepest point measured is at least 70 feet (21.3 m). Our records hold 7 species for this water.

Depth and bottom

Deepest measured point: at least 70 ft (21.3 m). That is the deepest contour line: the bottom goes deeper. 92% of the water is 60 feet or shallower. We hold 62 depth contour lines for this water.

Mascoma Lake - panoramio.jpg
Sam Kovaka · CC BY-SA 3.0
  • 0–5 ft: 6.7% of the water
  • 5–10 ft: 8.7% of the water
  • 10–15 ft: 8.7% of the water
  • 15–20 ft: 8.3% of the water
  • 20–25 ft: 8.9% of the water
  • 25–30 ft: 10.4% of the water
  • 30–35 ft: 9.8% of the water
  • 35–40 ft: 9.4% of the water
  • 40–45 ft: 9.8% of the water
  • 45–50 ft: 4.9% of the water
  • 50–55 ft: 3.2% of the water
  • 55–60 ft: 3.2% of the water
  • 60–65 ft: 2.6% of the water
  • 65–70 ft: 5.6% of the water

5 target fish, led by Rainbow Trout

  • Rainbow Trout — Feeding water: 50–65°F.
  • Smallmouth Bass — Feeding water: 60–75°F.
  • Atlantic Salmon — Feeding water: 45–60°F.
  • Brown Trout — Feeding water: 50–65°F.
  • Largemouth Bass — Feeding water: 65–85°F.

Also recorded here: Rock Bass, Common Carp.

Stocking: 3,679 fish in 2026

New Hampshire Fish and Game Department records list 3,679 fish released into this water in 2026.

  • Rainbow Trout: 1,700 in 2026
  • Brown Trout: 1,500 in 2026

One more species on the stocking list.

Water and conditions

Our water temperature readings average 74°F; they do not cover the whole year, so this is not a yearly average. pH averages 6.8. These readings span 2017–2026.

2 ramps and launches on this water

On this water we hold 2 boat ramps.

  • Boat Facility (near dam) — restrooms. Lebanon.
  • Boat Launch & Beach Area — restrooms. Enfield. website nhfg.maps.arcgis.com/apps/webappviewer/index.html?id=2243091f322449819c244c0c3b2f3f43

Fee and opening hours are blank for all 2 places in this list: a blank means we hold no such field, not that it is free or always open, and this list may not be complete.

What is hard here

Only 2 public ramps are on file, so the launch decides where you fish.

Where this data comes from

  • NH GRANIT — NH GRANIT: depth contours: class A, a survey of the bottom.
  • Webster, K.E., McCullough, I.M., Soranno, P.A. LAGOS-US DEPTH v1.0, EDI, doi:10.6073/pasta/64ddc4d04661d9aef4bd702dc5d8984f (CC BY 4.0); Cheruvelil et al. LAGOS-US LOCUS v1.0 (EDI) — LAGOS-US DEPTH v1.0: Lake depth for 17,675 lakes in the conterminous U.S.: class B, a depth figure measured and published by an agency, without a bottom map.