Lake Lillinonah fishing: Largemouth Bass, Smallmouth Bass, Bluegill
Target species: Largemouth Bass, Smallmouth Bass, Bluegill, Rock Bass
Boat: 2 ramps and launches on file for this water.
Start here: Launch at Lake Lillinonah (Pond Brook) Boat Launch.
The lake
Lake Lillinonah covers 1,597 acres in Connecticut, across 3 counties: Western Connecticut, Naugatuck Valley and Northwest Hills. It is a lake: 91.1% of it is 70 feet deep or less; the deepest point measured is at least 80 feet (24.4 m). Our records hold 7 species for this water.

Depth and bottom
Deepest measured point: at least 80 ft (24.4 m). That is the deepest contour line: the bottom goes deeper. 91.1% of the water is 70 feet or shallower. We hold 174 depth contour lines for this water.

- 0–5 ft: 8.6% of the water
- 5–10 ft: 8.4% of the water
- 10–15 ft: 11.1% of the water
- 15–20 ft: 10.1% of the water
- 20–25 ft: 8.1% of the water
- 25–30 ft: 7.9% of the water
- 30–35 ft: 7.8% of the water
- 35–40 ft: 8% of the water
- 40–45 ft: 5.7% of the water
- 45–50 ft: 4.7% of the water
- 50–55 ft: 3.7% of the water
- 55–60 ft: 3.2% of the water
- 60–65 ft: 1.9% of the water
- 65–70 ft: 1.9% of the water
- 70–75 ft: 2% of the water
- 75–80 ft: 6.9% of the water
4 target fish, led by Largemouth Bass
- Largemouth Bass — Feeding water: 65–85°F.
- Smallmouth Bass — Feeding water: 60–75°F.
- Bluegill — Feeding water: 70–85°F.
- Rock Bass — Feeding water: 65–75°F.
Also recorded here: Northern Pike, Green Sunfish, Brook Silverside.

Water and conditions
Water clarity runs 6.1–10.8 feet on our readings, averaging 8.5 feet, from 53 readings. Our water temperature readings average 66°F; they do not cover the whole year, so this is not a yearly average. pH averages 7.8. These readings span 2016–2024.
2 ramps and launches on this water
On this water we hold 2 boat ramps.
- Lake Lillinonah (Pond Brook) Boat Launch — on Pond Brook, Newtown, Housatonic River Water Access. 158 Hanover Road, Newtown · website portal.ct.gov/DEEP/Boating/Boat-Launches/Lake-Lillinonah-Pond-Brook-Boat-Launch
- Lake Lillinonah Boat Launch — Bridgewater, Lake Lillinonah Water Access. 199 Main Street South, Bridgewater · website portal.ct.gov/DEEP/Boating/Boat-Launches/Lake-Lillinonah-Boat-Launch---Bridgewater
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
- Connecticut DEEP — Connecticut DEEP: 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.























