Crystal Lake fishing: Largemouth Bass, Rainbow Trout, Smallmouth Bass
Target species: Largemouth Bass, Rainbow Trout, Smallmouth Bass
Boat: 1 ramp or launch on file for this water.
Start here: Launch at Boat Access Facility.
The lake
Crystal Lake covers 452 acres in New Hampshire, across Belknap County. It is a lake: 91.1% of it is 39 feet deep or less; the deepest point measured is at least 50 feet (15.2 m). Our records hold 3 species for this water.
Stocking: 639 fish in 2026
New Hampshire Fish and Game Department records list 639 fish released into this water in 2026.
- Rainbow Trout: 639 in 2026
Depth and bottom
Deepest measured point: at least 50 ft (15.2 m). That is the deepest contour line: the bottom goes deeper. 91.1% of the water is 39 feet or shallower. We hold 27 depth contour lines for this water.
- 0–3 ft: 21.5% of the water
- 3–6 ft: 9.1% of the water
- 6–9 ft: 9% of the water
- 9–12 ft: 9.4% of the water
- 12–15 ft: 6.9% of the water
- 15–18 ft: 6.2% of the water
- 18–21 ft: 5.3% of the water
- 21–24 ft: 5.2% of the water
- 24–27 ft: 5.3% of the water
- 27–30 ft: 4.7% of the water
- 30–33 ft: 3% of the water
- 33–36 ft: 2.7% of the water
- 36–39 ft: 2.8% of the water
- 39–42 ft: 3.4% of the water
- 42–45 ft: 2.7% of the water
- 45–48 ft: 2.2% of the water
- 48–50 ft: 0.6% 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.
1 ramp or launch on this water
On this water we hold 1 boat ramp and 1 shore access point.
- Boat Access Facility — Gilmanton.
Shore access for bank fishing
- Crystal Lake Dam — Gilmanton.
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.
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 6.9. These readings span 2017–2026.
What is hard here
Only 1 public ramp is 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.
