How deep is Colebrook River Reservoir?

Colebrook River Reservoir reaches a maximum depth of 130 feet, according to the CT DEEP Lake Bathymetry survey. Most of the lake is shallower, with 13 mapped depth bands between the shoreline and the deepest hole.

Where is the deepest part of Colebrook River Reservoir?

The deepest surveyed water on Colebrook River Reservoir sits toward the southeastern corner of the lake, inside the 130 ft contour. The interactive depth map above shows the full basin outline and the breaks leading into it.

How accurate is this Colebrook River Reservoir depth map?

The contours come from the CT DEEP Lake Bathymetry survey. 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.

Connecticut lake depth maps

Colebrook River Reservoir depth map

Colebrook River Reservoir in Colebrook, Connecticut reaches a depth of 130 feet. The official Connecticut survey maps 13 depth bands across 236 contour lines. This free map of Colebrook River Reservoir shows every surveyed contour as an interactive depth chart you can use to plan a session before you travel.

Colebrook River Reservoir depth chart: 13 depth bands to 130 ft

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

How to fish Colebrook River Reservoir: deep, two-story water

At 130 feet, this is a two-story fishery: warm-water species work the shallows and weed edges while the deep basin can hold cold-water fish below the summer thermocline. In summer, target the transition where the bottom breaks from the shallow shelf toward the basin; fish suspend along that edge at dawn and dusk. The 13 mapped depth bands make it straightforward to find those breaks before you launch.

Ice fishing on Colebrook River Reservoir

On deep water like Colebrook River Reservoir, the winter bite concentrates along the first major drop-off rather than the deepest basin. Use the contours above to find where the shallow shelf breaks toward deep water and set up on that edge; panfish and walleye slide up and down it through the day. Late ice often pushes fish shallower again. Always verify ice thickness locally before walking out, and remember deep lakes freeze later and less evenly than shallow ones.

Colebrook River Reservoir depth map FAQs

How deep is Colebrook River Reservoir?: Colebrook River Reservoir reaches a maximum depth of 130 feet, according to the CT DEEP Lake Bathymetry survey. Most of the lake is shallower, with 13 mapped depth bands between the shoreline and the deepest hole.
Where is the deepest part of Colebrook River Reservoir?: The deepest surveyed water on Colebrook River Reservoir sits toward the southeastern corner of the lake, inside the 130 ft contour. The interactive depth map above shows the full basin outline and the breaks leading into it.
How accurate is this Colebrook River Reservoir depth map?: The contours come from the CT DEEP Lake Bathymetry survey. 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.

Depth maps for lakes near Colebrook River Reservoir

West Branch Reservoir depth map · 90 ft max · 3 mi away
Highland Lake depth map · 60 ft max · 9 mi away
Winchester Lake depth map · 16 ft max · 10 mi away
McDonough Lake depth map · 50 ft max · 10 mi away
West Hill Pond depth map · 60 ft max · 10 mi away

Mapped fishing venues near Colebrook River Reservoir

Colebrook River Reservoir in the venue directory covers access and fishing details for this water.

West Branch Reservoir · 3 mi away
Highland Lake · 9 mi away
Winchester Lake · 10 mi away

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