Kopka River Depth Map & Fishing Spots (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 Kopka River

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 Kopka River on the board.

Fishing Kopka River: what the data says

4,076-acre lake in Thunder Bay District, Ontario. The lake tops out around 79 ft. The depth data here comes from the Ontario MNRF survey of 1974, a decades-old survey (a transect sounding survey). The exact depth survey is published on its own because no defensible water-specific species roster was found.

On the chart, Kopka River draws 4,092 acres inside 167.7 miles of shoreline, with 66 islands in the mix. A development index of 18.7 means a maze of bays and points: far more casting targets than a round bowl of the same size. 91% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. Tip to tip the water measures near 50.5 mi with an 18.3-mi widest point. The water lies in Thunder Bay District. Closest neighbour on DepthScout: Awkward Lake, 6 mi west of here.

Notable structure

Kopka River carries 14 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 70 ft down.

Deep basin: deep basin, around 70 ft
Sharp break: drop-off, around 63 ft
Break off the point: drop-off, around 35 ft
Feeding flat: feeding flat, around 25 ft
Main-lake point: point, around 20 ft
Secondary point: point, around 20 ft
Shallow feeding flat: feeding flat, around 15 ft
Shallow feeding flat: feeding flat, around 13 ft
Rock reef: rock pile, around 9 ft
Rock reef: rock pile, around 7 ft
Weed flat: weed flat, around 7 ft
Shallow bay flat: weed flat, around 6 ft
Back-bay flat: weed flat, around 6 ft
Rock reef: rock pile, around 5 ft

Kopka River 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 Kopka River specifically, so confirm the current rules before you fish.

Check the official Ontario fishing regulations →

Common questions

How deep is Kopka River?

Kopka River is about 79 ft (24 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1974, a decades-old survey (a transect sounding survey).

What fish are in Kopka River?

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

What are the fishing regulations for Kopka River?

Fishing on Kopka River 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

Awkward Lake 6 mi · North Whalen Lake 7 mi · Cooney Lake 8 mi · Maggotte Lake 9 mi · Vivid Lake 9 mi · Osemigwemowin Lake 10 mi · Kenakskaniss Lake 10 mi · Hornick Lake 10 mi · Obonga Lake 11 mi · Sandison Lake 11 mi · Crevasse Lake 12 mi · Uneven Lake 14 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.