Connecticut lake depth maps
Quaddick Reservoir, Lower depth map
Quaddick Reservoir, Lower in Thompson, Connecticut reaches a depth of 15 feet. Quaddick Reservoir, Lower is charted here across 5 closed depth contours, from the 0 ft line down to 12 ft, enclosing about 124 acres of water. Half of that water lies inside the 9 ft line, and only 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
Quaddick Reservoir, Lower depth chart: 5 depth contours from 0 to 12 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 | 124 acres | 100% |
| 3 ft | 106 acres | 85% |
| 6 ft | 86 acres | 69% |
| 9 ft | 13 acres | 10% |
| 12 ft | 1 acres | under 1% |
Acreages are computed from the closed CT DEEP Lake Bathymetry contour rings, with islands subtracted. Shares are of the 124 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 15 ft sounding, marked as a point rather than a closed contour, so it is not charted as a band.
Fishing Quaddick Reservoir, Lower: steep sides for its size
Inside its outermost 0 ft contour the survey charts about 124 acres of Quaddick Reservoir, Lower, with the 9 ft line enclosing half of it, so depth comes quickly here, with no long shallow margin before the bottom drops away. The sharpest change on the chart is between 6 and 9 ft, where the mapped water loses 73 acres in 3 ft of depth, that band is the contour to work first, because it is where the bottom stops being flat. The deepest 12 ft contour holds 1 acres, under 1% of the mapped water, toward the northeastern corner of the lake. At 15 ft top to bottom, weed growth shapes this water more than depth does, but the 1-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 Quaddick Reservoir, Lower
Shallow water like Quaddick Reservoir, Lower is usually among the first to make safe ice, and with only 1 acres inside the 12 ft contour the fish have very little deep water to spread into once the weed beds die back. That hole, and the subtle single-contour depressions across the 124-acre basin, are where to start. Check ice thickness locally before you walk out.
Quaddick Reservoir, Lower depth map FAQs
- How deep is Quaddick Reservoir, Lower?
- Quaddick Reservoir, Lower reaches a maximum depth of 15 feet in the CT DEEP Lake Bathymetry survey. Most of it is far shallower: the survey charts 5 closed depth contours over about 124 acres, and half of that water sits inside the 9 ft line. The 15 ft figure is a single recorded sounding rather than a closed contour, so the deepest line you can actually trace on the map is 12 ft.
- Where is the deepest part of Quaddick Reservoir, Lower?
- The deepest charted water on Quaddick Reservoir, Lower lies inside the 12 ft contour, toward the northeastern corner of the lake. That contour encloses 1 acres, under 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 Quaddick Reservoir, Lower is shallower than 9 feet?
- About half. The 9 ft contour encloses 13 acres of the roughly 124 acres inside the outer 0 ft line, so the other half of the water is shallower than 9 feet. The sharpest drop is between 6 and 9 feet, where the mapped water sheds 73 acres.
- How accurate is this Quaddick Reservoir, Lower 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 Quaddick Reservoir, Lower
- Quaddick Reservoir, Middle depth map · 18 ft max · 1 mi away
- West Thompson Reservoir depth map · 30 ft max · 4 mi away
- Killingly Pond depth map · 21 ft max · 6 mi away
- Roseland Lake depth map · 18 ft max · 6 mi away
- Alexander Lake depth map · 48 ft max · 7 mi away
Mapped fishing venues near Quaddick Reservoir, Lower
Quaddick Reservoir, Lower in the venue directory covers access and fishing details for this water.
- Quaddick Reservoir, Middle · 1 mi away
- West Thompson Reservoir · 4 mi away
- Killingly Pond · 6 mi away
Fishing in Connecticut needs a state license: Connecticut fishing license guide · all Connecticut venues