Dagger Lake Depth Map & Fishing Spots (Thunder Bay District, ON)

Recommendations come from depth structure and seasonal species behavior. Treat them as a starting point, not a guarantee. Contours here are interpolated from real agency depth surveys (state DNR / USACE). Never use for navigation. Always check local regulations.

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Recent catches at Dagger Lake

Shared by DepthScout anglers. Exact spots stay private, always.

No shared catches here yet — be the first.Log a catch from the map above and share it to put Dagger Lake on the board.

Fishing Dagger Lake: what the data says

478-acre lake in Thunder Bay District, Ontario. The lake tops out around 39 ft. The depth data here comes from a transect sounding survey by the Ontario MNRF. The exact depth survey is published on its own because no defensible water-specific species roster was found.

The outline encloses 480 acres, worked by 13.8 miles of shoreline — 12 islands included. That shoreline is heavily fingered (development index 4.5) — bays, points and pockets everywhere, which multiplies the fishable edge. Roughly 67% of the water is 15 ft or less, the band where the food chain lives. Tip to tip the water measures near 2.7 mi with a 1.1-mi widest point. It sits in Thunder Bay District. If the bite dies, Change Lake is 2 mi to the northwest.

Notable structure

Dagger Lake carries 7 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 39 ft down.

Deep basin: deep basin, around 39 ft
Shallow feeding flat: feeding flat, around 20 ft
Main-lake point: point, around 1 ft
Secondary point: point, around 1 ft
Shallow bay flat: weed flat, around 1 ft
Back-bay flat: weed flat, around 1 ft
Break off the point: drop-off, around 1 ft

Dagger Lake fishing regulations

Season dates, license requirements, and size and bag limits for Ontario waters are set by the Ontario fishing regulations (FMZ summary) — and special regulations can apply to Dagger Lake specifically, so confirm the current rules before you fish.

Check the official Ontario fishing regulations →

Common questions

How deep is Dagger Lake?

Dagger Lake is about 39 ft (12 m) deep at its deepest point. The depth data here comes from a transect sounding survey by the Ontario MNRF.

What fish are in Dagger Lake?

No official water-specific fish survey, inspected stocking record, reported-catch roster, or species-bearing fisheries classification was found for Dagger Lake. Its depth chart is still a real survey; species and fishing spots are intentionally left unclaimed.

What are the fishing regulations for Dagger Lake?

Fishing on Dagger Lake is regulated by the Ontario fishing regulations (FMZ summary). Check the official Ontario regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.

Nearby waters

Change Lake 2 mi · Brennan Lake 5 mi · Granite Lake 8 mi · Berry Lake 10 mi · Redhead Lake 11 mi · McWade Lake 12 mi · Surprise Lake 12 mi · Onamakawash Lake 13 mi · Beagle Lake 13 mi · Sassenach Lake 17 mi · Finger L. 19 mi · Elga L. 19 mi

More water nearby: Thunder Bay District fishing maps (662 charts). Browse all Ontario fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. Fish here with a sonar unit that logs? Send us your depth data and we'll improve this chart, credited to you. For fishing guidance only, never navigation.