Lost Bay 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 Lost Bay

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 Lost Bay on the board.

Fishing Lost Bay: what the data says

588-acre lake in Leeds and Grenville United Counties, Ontario. The lake tops out around 60 ft. The depth data here comes from the Ontario MNRF survey of 1975, 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.

Drawn out, this is 591 acres of water rimmed by 12.2 miles of bank — 19 islands included. An index of 3.6 puts the bank firmly in maze territory: point after pocket after cove, every one a casting target. About 33% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Call it 2.4 mi long by 1.3 mi wide at the broadest reach. The water lies in Leeds and Grenville United Counties. For a second option, Lime Lake lies 1 mi southwest.

Notable structure

Count 6 structure marks on this chart. The deepest, Deep basin, sits near 60 ft.

Deep basin: deep basin, around 60 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

Lost Bay 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 Lost Bay specifically, so confirm the current rules before you fish.

Check the official Ontario fishing regulations →

Common questions

How deep is Lost Bay?

Lost Bay is about 60 ft (18 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1975, a decades-old survey (a transect sounding survey).

What fish are in Lost Bay?

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

What are the fishing regulations for Lost Bay?

Fishing on Lost Bay 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

Lime Lake 1 mi · The Crank 1 mi · Long Lake 2 mi · Grippen Lake 3 mi · Singleton Lake 3 mi · Gananoque Lake 3 mi · Red Horse Lake 3 mi · Highley Lake 3 mi · Killenbeck Lake 3 mi · Charleston Lake 4 mi · Lyndhurst Lake 5 mi · Howard Lake 5 mi

More water nearby: Leeds and Grenville United Counties fishing maps (54 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.