Halfmoon Lake fishing: Largemouth Bass, Rainbow Trout, Smallmouth Bass

Target species: Largemouth Bass, Rainbow Trout, Smallmouth Bass
Boat: 2 ramps and launches on file for this water.
Start here: Launch at Boat Ramp.

The lake

Halfmoon Lake covers 285 acres in New Hampshire, across Belknap County. It is a lake: the deepest point measured is at least 25 feet (7.6 m). Our records hold 3 species for this water.

Halfmoon Lake (8551640171).jpg
Pacific Southwest Region 5 · Public domain

Depth and bottom

Deepest measured point: at least 25 ft (7.6 m). That is the deepest contour line: the bottom goes deeper. We hold 28 depth contour lines for this water.

Halfmoon Lake Belknap County New Hampshire.jpg
Ken Gallager · CC BY-SA 4.0
  • 0–2 ft: 6.7% of the water
  • 2–4 ft: 8.5% of the water
  • 4–6 ft: 8.9% of the water
  • 6–8 ft: 8.9% of the water
  • 8–10 ft: 9.8% of the water
  • 10–12 ft: 8.1% of the water
  • 12–14 ft: 7.1% of the water
  • 14–16 ft: 7% of the water
  • 16–18 ft: 6.5% of the water
  • 18–20 ft: 6.2% of the water
  • 20–22 ft: 5.4% of the water
  • 22–24 ft: 5.6% of the water
  • 24–25 ft: 11.2% of the water

3 target fish, led by Largemouth Bass

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

Water and conditions

Our water temperature readings average 75°F; they do not cover the whole year, so this is not a yearly average. pH averages 6.5. These readings span 2017–2024.

2 ramps and launches on this water

On this water we hold 2 boat ramps.

  • Boat Ramp — Barnstead.
  • Town Boat Launch — Alton.

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.