How deep is Quonnipaug Lake?

Quonnipaug Lake reaches a maximum depth of 42 feet in the CT DEEP Lake Bathymetry survey. Most of it is far shallower: the survey charts 8 closed depth contours over about 99 acres, and half of that water sits inside the 12 ft line.

Where is the deepest part of Quonnipaug Lake?

The deepest charted water on Quonnipaug Lake lies inside the 42 ft contour, toward the northeastern corner of the lake. That contour encloses 6.1 acres, 6.2% of the mapped water, so it is a small target on a small water, the depth chart above gives the contour to line up on.

How much of Quonnipaug Lake is shallower than 12 feet?

About half. The 12 ft contour encloses 45 acres of the roughly 99 acres inside the outer 0 ft line, so the other half of the water is shallower than 12 feet. The sharpest drop is between 0 and 6 feet, where the mapped water sheds 48 acres.

How accurate is this Quonnipaug Lake depth map?

The contours come from the CT DEEP Lake Bathymetry survey, retrieved August 2026 and last rebuilt on August 19, 2026. Depths change over time with water levels and sediment, so treat this map as a planning guide for fishing, and never use it for navigation. Acreages are computed from the published contour geometry, not from a separate area survey, so read them as close approximations.

Connecticut lake depth maps

Quonnipaug Lake depth map

Quonnipaug Lake in Guilford, Connecticut reaches a depth of 42 feet. Quonnipaug Lake is charted here across 8 closed depth contours, from the 0 ft line down to 42 ft, enclosing about 99 acres of water. Half of that water lies inside the 12 ft line, and only 6.1 acres lie inside the deepest one. Every contour is on the interactive map below, free and without an account.

Data: CT DEEP Lake Bathymetry (CC0). Contours closed, checked and area-computed by Jordan Carter, founder of GilledIt · page updated August 19, 2026

Quonnipaug Lake depth chart: 8 depth contours from 0 to 42 ft

Data: CT DEEP Lake Bathymetry (CC0), retrieved August 2026 · depths change over time · not for navigation

Quonnipaug Lake depth chart data: water enclosed by each contour
Depth contour	Water inside it	Share of mapped water
0 ft	99 acres	100%
6 ft	51 acres	52%
12 ft	45 acres	46%
18 ft	39 acres	40%
24 ft	33 acres	33%
30 ft	23 acres	23%
36 ft	15 acres	15%
42 ft	6.1 acres	6.2%

Acreages are computed from the closed CT DEEP Lake Bathymetry contour rings, with islands subtracted. Shares are of the 99 acres inside the outermost charted contour (the 0 ft line), which is the outer edge of the mapped water, several state files carry no 0 ft shoreline line, so this is not the same as a share of the lake's published surface area.

Fishing Quonnipaug Lake: a broad shallow flat

The survey encloses about 99 acres of Quonnipaug Lake inside its 0 ft contour, and half of that water lies inside the 12 ft line, so most of this Guilford water is shallow and the depth is concentrated in one part of the basin. Between 0 and 6 ft the mapped water sheds 48 acres in 6 ft of depth, the sharpest change on the chart, start on that band, because it is where the bottom stops being flat. 6.1 acres, 6.2% of the mapped water, lie inside the deepest 42 ft contour, toward the northeastern corner of the lake. With 42 ft at its deepest there is no true cold-water layer here, so structure does the work the thermocline does elsewhere: fish the points and inside turns where the 0 and 6 ft lines pinch together, hardest in early season and again as fish follow bait back down in autumn.

Ice fishing on Quonnipaug Lake

Quonnipaug Lake's 42 ft is a workable ice depth, enough water to hold fish all winter, without the slow freeze-up of a big basin. First light belongs on the 42 ft hole, all 6.1 acres of it; as the sun gets up, move onto the 0–6 ft break, and spend the middle of the day on the flats inside the 12 ft line. Check ice thickness locally before you walk out.

Quonnipaug Lake depth map FAQs

How deep is Quonnipaug Lake?: Quonnipaug Lake reaches a maximum depth of 42 feet in the CT DEEP Lake Bathymetry survey. Most of it is far shallower: the survey charts 8 closed depth contours over about 99 acres, and half of that water sits inside the 12 ft line.
Where is the deepest part of Quonnipaug Lake?: The deepest charted water on Quonnipaug Lake lies inside the 42 ft contour, toward the northeastern corner of the lake. That contour encloses 6.1 acres, 6.2% of the mapped water, so it is a small target on a small water, the depth chart above gives the contour to line up on.
How much of Quonnipaug Lake is shallower than 12 feet?: About half. The 12 ft contour encloses 45 acres of the roughly 99 acres inside the outer 0 ft line, so the other half of the water is shallower than 12 feet. The sharpest drop is between 0 and 6 feet, where the mapped water sheds 48 acres.
How accurate is this Quonnipaug Lake depth map?: The contours come from the CT DEEP Lake Bathymetry survey, retrieved August 2026 and last rebuilt on August 19, 2026. Depths change over time with water levels and sediment, so treat this map as a planning guide for fishing, and never use it for navigation. Acreages are computed from the published contour geometry, not from a separate area survey, so read them as close approximations.

Depth maps for lakes near Quonnipaug Lake

Millers Pond depth map · 18 ft max · 7 mi away
Dooley Pond depth map · 15 ft max · 9 mi away
Beseck Lake depth map · 24 ft max · 9 mi away
Pataconk Reservoir depth map · 15 ft max · 9 mi away
Black Pond depth map · 21 ft max · 10 mi away

Mapped fishing venues near Quonnipaug Lake

Quonnipaug Lake in the venue directory covers access and fishing details for this water.

Millers Pond · 7 mi away
Dooley Pond · 9 mi away
Beseck Lake · 9 mi away

Fishing in Connecticut needs a state license: Connecticut fishing license guide · all Connecticut venues