Lake depth chart
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Recent public catches load as you reach this section.
4,042-acre lake in Peterborough County, Ontario. The lake tops out around 18 ft. The depth chart comes from Ontario Ministry of Natural Resources and Forestry bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The depth data here comes from a transect sounding survey by the Ontario MNRF. Here's the year, species by species, as the scoring engine sees it.
On the chart, Chemong Lake draws 4,059 acres inside 40.7 miles of shoreline — 12 islands included. The 4.6 development index tells the story — a convoluted bank whose fishable edge far outruns the acreage. About 93% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Call it 9.2 mi long by 2.3 mi wide at the broadest reach. You'll find it in Peterborough County. The nearest mapped water is Chemong Lake, 2 mi to the north.
These fish are listed in an exact-water agency record as forage or ecological context. They are not target-species profiles and do not affect DepthScout's Prime, Good, or Fair spot ratings.
Official Ontario MNRF Fish ON-Line record. The listing documents source-recorded presence, not present abundance or guaranteed catchability.
Come spring, look for walleye tight to the bank in 4 to 15 ft. Expect a summer slide to 5 to 18 ft, then a winter hold in 5 to 18 ft. Start at Break off the point. It's a drop-off holding about 8 ft of water and rates prime come fall. Prime time lands in the evening and early morning. A crawler harness on bottom bouncer or a deep crankbait (trolled) is the honest summer answer here.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | Shoreline point (6 ft) | 1/8 oz jig + minnow, Hair jig |
| Summer | 5 to 18 ft chart-limited; documented 15 to 35 ft | dusk & dawn | Break off the point (8 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 5 to 18 ft chart-limited; documented 12 to 40 ft | dusk & night | Break off the point (8 ft) | Jigging rap, Jig + big minnow |
| Winter | 5 to 18 ft chart-limited; documented 20 to 40 ft | dusk & dawn | Deep basin (18 ft) | Jigging spoon + minnow head, Rattle bait |
Come spring, look for yellow perch tight to the bank in 3 to 12 ft. They move out to 5 to 18 ft in summer and finish the year down in 5 to 18 ft. If you only fish one area, make it Deep basin: a deep basin around 18 ft that scores prime in fall. Best bite is early morning. A drop-shot micro plastics or a small spoon tipped with worm is the honest summer answer here.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Back-bay flat (2 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 5 to 18 ft chart-limited; documented 10 to 30 ft | dawn | Deep basin (18 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 5 to 18 ft chart-limited; documented 12 to 35 ft | midday | Deep basin (18 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 5 to 18 ft chart-limited; documented 15 to 35 ft | midday & dawn | Deep basin (18 ft) | Tungsten jig + spikes, Rattle spoon (small) |
In spring, muskellunge run shallow here, mostly 3 to 12 ft. Midsummer fish sit out in 5 to 18 ft before dropping to 5 to 18 ft for winter. Fall muskellunge concentrate at Break off the point, a prime-rated drop-off around 8 ft. Fish it in the evening and early morning and you'll meet the bite. You won't need more than a double-10 bucktail or a topwater (walk-the-dog / creeper) most summer days.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Back-bay flat (2 ft) | Smaller bucktail (#8 blades), 6" glide bait |
| Summer | 5 to 18 ft chart-limited; documented 8 to 25 ft | dusk & dawn | Shoreline point (6 ft) | Double-10 bucktail, Topwater (walk-the-dog / creeper) |
| Fall | 5 to 18 ft chart-limited; documented 8 to 30 ft | midday & dusk | Break off the point (8 ft) | Big rubber (Bull Dawg style), 10"+ glide bait |
| Winter | 5 to 18 ft chart-limited; documented 15 to 35 ft | midday | Deep basin (18 ft) | Large rubber, crawled slow |
Start shallow in spring: smallmouth bass sit in 3 to 12 ft that time of year. Warm water sends them out to 5 to 18 ft; cold water stacks them in 5 to 18 ft. Top water on the chart: Shoreline point, a point in the 6 ft range, prime in fall. Fish it in early morning and the evening and you'll meet the bite. Throw a drop shot (goby/minnow) or a ned rig until the fish tell you otherwise.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Main-lake point (3 ft) | Ned rig, Tube jig |
| Summer | 5 to 18 ft chart-limited; documented 10 to 30 ft | dawn & dusk | Break off the point (8 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 5 to 18 ft chart-limited; documented 8 to 25 ft | midday & dawn | Shoreline point (6 ft) | Jerkbait, Blade bait |
| Winter | 5 to 18 ft chart-limited; documented 20 to 45 ft | midday | Break off the point (8 ft) | Blade bait, Hair jig |
The spring pattern is a shallow one: largemouth bass in 2 to 10 ft. Midsummer fish sit out in 5 to 18 ft before dropping to 5 to 18 ft for winter. The spot to know is Back-bay flat, a weed flat in about 2 ft of water that rates prime for largemouth bass in spring. Plan around early morning and the evening in the warm months. Summer baits: a texas-rigged 10" worm or a deep-diving crankbait gets it done.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Back-bay flat (2 ft) | Spinnerbait, Chatterbait |
| Summer | 5 to 18 ft chart-limited; documented 8 to 20 ft | dawn & dusk | Break off the point (8 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Shoreline point (6 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 5 to 18 ft chart-limited; documented 15 to 35 ft | midday | Break off the point (8 ft) | Blade bait, Jigging spoon |
Early season rock bass use the shallows, holding in 2 to 10 ft. Summer is a 5 to 18 ft game here, winter a 5 to 18 ft one. The chart's best answer is Shoreline point — point, 6 ft, prime for summer. Best bite is the evening. Tie on a ned rig (small) or a marabou jig and you're in the game.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | Main-lake point (3 ft) | 1/16 oz jig + grub, Small inline spinner |
| Summer | 5 to 18 ft chart-limited; documented 5 to 20 ft | dusk | Shoreline point (6 ft) | Ned rig (small), Marabou jig |
| Fall | 5 to 18 ft chart-limited; documented 8 to 22 ft | midday | Break off the point (8 ft) | Small tube jig, Inline spinner |
| Winter | 5 to 18 ft chart-limited; documented 12 to 30 ft | midday | Deep basin (18 ft) | Tungsten jig + plastic, Small spoon + spike |
Chemong Lake also holds crappie (5 to 18 ft in summer), bluegill (4 to 15 ft in summer), pumpkinseed (2 to 10 ft in summer), brown bullhead (3 to 12 ft in summer), common carp (3 to 15 ft in summer), black bullhead (3 to 15 ft in summer), yellow bullhead (3 to 15 ft in summer). Pick any of them on the map above for rated spots and bait picks.
11 pieces of structure are mapped here — Deep basin, around 18 ft, is the deepest of them.
Access data: OpenStreetMap contributors (ODbL) — community-mapped launches. Confirm conditions and fees locally before you launch.
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 Chemong Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Chemong Lake is about 18 ft (5 m) deep at its deepest point. The depth data here comes from a transect sounding survey by the Ontario MNRF.
Anglers target walleye, yellow perch, muskellunge, smallmouth bass, largemouth bass, rock bass, crappie, bluegill, pumpkinseed, brown bullhead, common carp, black bullhead, yellow bullhead on Chemong Lake.
Break off the point is the top-rated area: a drop-off in about 8 ft of water that rates prime for walleye in fall. Every other rated spot, per species and season, is on the map above.
For walleye, the summer bite is best in the evening and early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Chemong 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.
Chemong Lake 2 mi · Chemong Lake 6 mi · Pigeon Lake 7 mi · Buckhorn Lake 7 mi · Katchewanooka Lake 8 mi · Pigeon River 8 mi · Sandy Lake 10 mi · Long Lake 12 mi · Lower Buckhorn Lake 12 mi · Bald Lake Narrows 12 mi · Little Bald Lake 13 mi · Big Bald Lake 13 mi
See how Chemong Lake stacks up: best largemouth bass lakes in Ontario · best smallmouth bass lakes in Ontario · best walleye lakes in Ontario · best crappie lakes in Ontario
More water nearby: Peterborough County fishing maps (83 charts). Browse all Ontario fishing maps. See every water on DepthScout. Bathymetry: published agency survey data. 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.