How deep is Alexander Lake?

Alexander Lake reaches a maximum depth of 48 feet in the CT DEEP Lake Bathymetry survey. Most of it is far shallower: the survey charts 9 closed depth contours over about 215 acres, and half of that water sits inside the 24 ft line.

Where is the deepest part of Alexander Lake?

The deepest charted water on Alexander Lake lies inside the 48 ft contour, toward the western side of the lake. That contour encloses 19 acres, 9.1% 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 Alexander Lake is shallower than 24 feet?

About half. The 24 ft contour encloses 101 acres of the roughly 215 acres inside the outer 0 ft line, so the other half of the water is shallower than 24 feet. The sharpest drop is between 0 and 6 feet, where the mapped water sheds 44 acres.

How accurate is this Alexander 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

Alexander Lake depth map

Alexander Lake in Killingly, Connecticut reaches a depth of 48 feet. Alexander Lake is charted here across 9 closed depth contours, from the 0 ft line down to 48 ft, enclosing about 215 acres of water. Half of that water lies inside the 24 ft line, and only 19 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

Alexander Lake depth chart: 9 depth contours from 0 to 48 ft

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

Alexander Lake depth chart data: water enclosed by each contour
Depth contour	Water inside it	Share of mapped water
0 ft	215 acres	100%
6 ft	171 acres	80%
12 ft	146 acres	68%
18 ft	125 acres	58%
24 ft	101 acres	47%
30 ft	81 acres	38%
36 ft	62 acres	29%
42 ft	43 acres	20%
48 ft	19 acres	9.1%

Acreages are computed from the closed CT DEEP Lake Bathymetry contour rings, with islands subtracted. Shares are of the 215 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 Alexander Lake: an evenly graded bottom

The survey encloses about 215 acres of Alexander Lake inside its 0 ft contour, and half of that water lies inside the 24 ft line, so the bottom loses depth gradually and evenly, with no broad shelf and no single abrupt drop. Between 0 and 6 ft the mapped water sheds 44 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. The deepest 48 ft contour holds 19 acres, 9.1% of the mapped water, toward the western side of the lake. Nothing here reaches a true cold-water layer at 48 ft, so structure does the thermocline's work: the points and inside turns where the 0 and 6 ft lines pinch together fish hardest in early season, and again as fish follow bait back down in autumn.

Ice fishing on Alexander Lake

At 48 ft, Alexander Lake is a workable ice depth: deep enough to hold fish all winter without the slow freeze-up of a big basin. Start on the 48 ft hole, 19 acres of it, at first light, then move up onto the 0–6 ft break as the sun gets up, and fish the flats inside the 24 ft line through the middle of the day. Check ice thickness locally before you walk out.

Alexander Lake depth map FAQs

How deep is Alexander Lake?: Alexander Lake reaches a maximum depth of 48 feet in the CT DEEP Lake Bathymetry survey. Most of it is far shallower: the survey charts 9 closed depth contours over about 215 acres, and half of that water sits inside the 24 ft line.
Where is the deepest part of Alexander Lake?: The deepest charted water on Alexander Lake lies inside the 48 ft contour, toward the western side of the lake. That contour encloses 19 acres, 9.1% 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 Alexander Lake is shallower than 24 feet?: About half. The 24 ft contour encloses 101 acres of the roughly 215 acres inside the outer 0 ft line, so the other half of the water is shallower than 24 feet. The sharpest drop is between 0 and 6 feet, where the mapped water sheds 44 acres.
How accurate is this Alexander 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 Alexander Lake

Killingly Pond depth map · 21 ft max · 5 mi away
Quinebaug Lake depth map · 28 ft max · 6 mi away
West Thompson Reservoir depth map · 30 ft max · 7 mi away
Roseland Lake depth map · 18 ft max · 7 mi away
Quaddick Reservoir, Lower depth map · 15 ft max · 7 mi away

Mapped fishing venues near Alexander Lake

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

Killingly Pond · 5 mi away
Quinebaug Lake · 6 mi away
Quasset lake · 6 mi away

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