Connecticut lake depth maps
Twin Lakes South depth map
Twin Lakes South in Avon, Connecticut reaches a depth of 18 feet. Twin Lakes South is charted here across 6 closed depth contours, from the 0 ft line down to 15 ft, enclosing about 17 acres of water. Half of that water lies inside the 12 ft line, and only under an acre 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
Twin Lakes South depth chart: 6 depth contours from 0 to 15 ft
Data: CT DEEP Lake Bathymetry (CC0), retrieved August 2026 · depths change over time · not for navigation
| Depth contour | Water inside it | Share of mapped water |
|---|---|---|
| 0 ft | 17 acres | 100% |
| 3 ft | 12 acres | 70% |
| 6 ft | 9.6 acres | 56% |
| 9 ft | 8.8 acres | 52% |
| 12 ft | 5.7 acres | 33% |
| 15 ft | under 1 acre | 4.6% |
Acreages are computed from the closed CT DEEP Lake Bathymetry contour rings, with islands subtracted. Shares are of the 17 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. The survey also records a 18 ft sounding, marked as a point rather than a closed contour, so it is not charted as a band.
Fishing Twin Lakes South: steep sides for its size
Inside its outermost 0 ft contour the survey charts about 17 acres of Twin Lakes South, with the 12 ft line enclosing half of it, so the bottom holds its depth well out from the bank rather than tapering off a long shallow margin. The sharpest change on the chart is between 0 and 3 ft, where the mapped water loses 5 acres in 3 ft of depth, that band is the contour to work first, because it is where the bottom stops being flat. The 15 ft contour, toward the western side of the lake, encloses under an acre of water, a single pocket rather than a basin, but one worth a drift over in high summer. Topping out at 18 ft, weed growth structures this water more than depth does, but the 0.8-acre deep spot still concentrates fish in the heat of summer, and the one-contour depressions on the chart are the ones most anglers row straight over.
Ice fishing on Twin Lakes South
A shallow lake like Twin Lakes South is usually among the first to make safe ice, and once the weed beds die back the fish have very little deep water to spread into: just 0.8 acres inside the 15 ft contour. Start there, then hunt the subtle single-contour depressions across the 17-acre basin. Check ice thickness locally before you walk out.
Twin Lakes South depth map FAQs
- How deep is Twin Lakes South?
- Twin Lakes South reaches a maximum depth of 18 feet in the CT DEEP Lake Bathymetry survey. Most of it is far shallower: the survey charts 6 closed depth contours over about 17 acres, and half of that water sits inside the 12 ft line. The 18 ft figure is a single recorded sounding rather than a closed contour, so the deepest line you can actually trace on the map is 15 ft.
- Where is the deepest part of Twin Lakes South?
- The deepest charted water on Twin Lakes South lies inside the 15 ft contour, toward the western side of the lake. That contour encloses under an acre, 4.6% 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 Twin Lakes South is shallower than 12 feet?
- About half. The 12 ft contour encloses 5.7 acres of the roughly 17 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 3 feet, where the mapped water sheds 5 acres.
- How accurate is this Twin Lakes South 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 Twin Lakes South
- Batterson Park Pond depth map · 18 ft max · 8 mi away
- Rainbow Reservoir depth map · 35 ft max · 8 mi away
- McDonough Lake depth map · 50 ft max · 9 mi away
- Wethersfield Cove depth map · 15 ft max · 11 mi away
- Crescent Pond depth map · 15 ft max · 12 mi away
Mapped fishing venues near Twin Lakes South
Twin Lakes South in the venue directory covers access and fishing details for this water.
- Batterson Park Pond · 8 mi away
- Rainbow Reservoir · 8 mi away
- McDonough Lake · 9 mi away
Fishing in Connecticut needs a state license: Connecticut fishing license guide · all Connecticut venues