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Cornwall Creek Floodin

Cheboygan County, Michigan · MI DNR bathymetric survey
25ft Max
depth
162 acres 7 contours
Paddling Index82Very Goodwooded shoreline · away from major roads · sheltered geometry
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Depth scale

The lake

Survey readout

Cornwall Creek Floodin is mapped to a depth of 25 ft on the Michigan DNR survey and covers about 162 acres in Cheboygan County, Michigan.

Measured from the Michigan DNR inland-lake contour survey.

Deepest mapped contour
25 ft
Mean depth
10.5 ft · estimated
Surface area
162 acres
Estimated volume
1,694 acre-ft · 552M gal
Shoreline
4.8 mi · irregular
Aquatic vegetation
11% of surface · NDVI estimate
Public access
No public DNR launch identified
Additional depth details7 contours
Contour depths
0–25 ft
Recorded point soundings
25 ft

48.3% of the surface sits over water shallower than 10 ft; 6.9% is deeper than 20 ft. Depth, area and volume are estimated from the interpolated survey surface — historical reference, not measurement.

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Chart data

Provenance

Sources: MI DNR inland lake contours, USGS 3DEP, USDA NAIP (public domain), OpenStreetMap (ODbL), MI DNR Boat Launches.

⚠ Not for navigation

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Map details & sources5 sources

All layers registered to one bounding box; positions in WGS 84.

Survey-derived depth contours drape over USGS 3DEP elevation, with a USDA NAIP aerial basemap and OpenStreetMap shoreline. Colour shows surveyed depth; dark lines are the survey's own isobaths.

Coordinates
45.22195, -84.40980
MI DNR lake ID
L6998
Vertical exaggeration
2.83×
Basemap
USDA NAIP · public domain
Model size
2.5 MB

Paddling

Paddling Index methodology v1.0 · calculated 2026-08-21
82 / 100Very GoodData confidence: High

Cornwall Creek Floodin has a heavily wooded and largely undeveloped setting, generally sheltered geometry, limited nearby major-road exposure. No special watercraft restriction is identified in the current source.

Why this score?5 components

Included in the index

ComponentRatingPoints of weightMeasurement
Natural settingExcellent28.8 of 3094% natural land cover within 150 m of shore (75% forest, 16% wetland; 1% developed)
Geometric wind exposureVery Good18.7 of 25mean fetch 767 m · 16% of sampled water within 500 m of shelter · generally short fetch
Watercraft controlsNone identified7.5 of 15No special watercraft restriction identified in the current DNR source. Motors permitted, subject to general law.
Public accessExcellent15.0 of 151 site with DNR boating-facility records · carry-in launch · 6 trailer spaces
Road isolationVery Good11.7 of 15limited nearby major-road exposure · 6 MDOT-classified segments within 1.2 km, peak 645 vehicles/day

Additional paddling considerations

These describe the lake but are not part of the v1 Paddling Index and do not change the number above.

Wake sensitivity
Low — wide enough that wakes disperse over most of the lake
Aquatic vegetation
Low — approximately 11% mapped coverage · NAIP aerial imagery (NDVI)
Observed motorized activity
Unknown — No lake-level measurement of boat traffic is available. Legal permission to operate motors is not evidence of use.
Wildlife habitat potential
High — 75% forest and 16% wetland cover within 150 m of shore
How this index is calculated. The Paddling Index is a relative composite derived from lake geometry and public environmental, access, roadway and watercraft-control data. It is not a user review, a safety rating, or a prediction of an individual outing. Differences of a few points should not be treated as meaningful — an 84 and an 82 are broadly comparable. Components and weights: natural setting 30%, geometric wind exposure 25%, watercraft controls 15%, public access 15%, road isolation 15%; observed motorboat activity is weighted 0% because no defensible lake-level measurement exists. Where a component has no data the remaining weights are renormalized and the confidence rating is lowered; below Medium confidence no number is shown. Sources: MI DNR Boating Access Sites (2026-08), MI DNR Watercraft Control Areas (2026-08), USGS/MRLC NLCD Land Cover (2021), MDOT Annual Average Daily Traffic (2025) and MI DNR bathymetric survey outline (0 ft isobath). Conditions change quickly — check current weather and local conditions before going out.

Fish you might catch

from angler catches

3 species with recent evidence in this lake — sized relative to each other. Illustrations are AI-generated representative adults in everyday colours, not photographs (provenance).

Largemouth Bass
Bluegill
Pumpkinseed

Fishing rules for this lake Beta

Size and daily limits for the 3 species found here — 3 open to harvest.

These are hook-and-line size, daily limit and season rules. Gear, spearing and bow fishing, spawning closures and rod limits are set by other Fisheries Orders and are not shown here.

BluegillOpen to harvestMinimum size: no size limit · Daily limit: 25 (FO-215 · statewide inland) The 25 is in any combination of the sunfishes — Bluegill, Pumpkinseed, Black and White Crappie, Rock Bass, Green, Longear and Redear Sunfish, Warmouth and hybrids — not 25 of each (FO-215.23A).
Largemouth BassOpen to harvestMinimum size: 14" · Daily limit: 5 (FO-215 · statewide inland) The 5 is in any combination of Largemouth and Smallmouth Bass, not 5 of each (FO-215.23A).
Beta. This panel is newly published. Every value is parsed from the Michigan DNR fisheries orders and hand-checked against the printed digest, but the coverage and wording are still under review. If anything here disagrees with the Michigan DNR's Fisheries Orders or its printed digest, the DNR is right — the signed Fisheries Order is the legal text; the digest summarises it.
BluegillOpen to harvestMinimum size: no size limit · Daily limit: 25 (FO-215 · statewide inland) The 25 is in any combination of the sunfishes — Bluegill, Pumpkinseed, Black and White Crappie, Rock Bass, Green, Longear and Redear Sunfish, Warmouth and hybrids — not 25 of each (FO-215.23A).
Largemouth BassOpen to harvestMinimum size: 14" · Daily limit: 5 (FO-215 · statewide inland) The 5 is in any combination of Largemouth and Smallmouth Bass, not 5 of each (FO-215.23A).
PumpkinseedOpen to harvestMinimum size: no size limit · Daily limit: 25 (FO-215 · statewide inland) The 25 is in any combination of the sunfishes — Bluegill, Pumpkinseed, Black and White Crappie, Rock Bass, Green, Longear and Redear Sunfish, Warmouth and hybrids — not 25 of each (FO-215.23A).

From FO-206.26 (eff. 2026-04-01) / FO-215.23A (eff. 2023-09-15) / FO-254.25 (eff. 2025-10-10), checked against the 2026 Michigan Fishing Regulations digest · verified 2026-08-24. Regulations can change — Michigan DNR rules are the controlling source; verify current regulations before fishing. Official regulations

Compiled from registered Master Angler catches. Silhouettes are stylized and scaled to typical adult sizes relative to one another. Presence is not a promise — fishing isn’t a sure thing.

Notable catches

Master Angler program · 1995–2025

Trophy-size fish anglers caught here and registered with the DNR — what people have actually caught, distinct from what a survey netted or the state stocked below.

14Catches recorded
3Species
Bluegill8 recorded · to 11.5″ · latest 2022
Largemouth Bass4 recorded · to 23.5″ · latest 2025
Pumpkinseed2 recorded · to 10.1″ · latest 2018

Biggest on record

Largemouth Bass23.5″ · 2015 · spincasting · worm
Largemouth Bass22.5″ · 2004 · spincasting
Largemouth Bass22.5″ · 2001 · spincasting · black cuipretworm
Largemouth Bass22″ · 2025 · spincasting · artificial lure
Bluegill11.5″ · 1995 · ice fishing · jig & wax worm

Bait: artificial lure (2) · combination (2)
Method: spincasting (7) · trolling (2) · drift fishing (1)

Master Angler entries are fish that met the program’s minimum size and were registered by the angler — they show what this lake has produced, not what a day here will produce. A catch on record is history, not a species listing: “Fish you might catch” lists only species with current evidence. Source: Michigan DNR Master Angler data.

Bait & tackle nearby

licensed retail bait dealers · straight-line distance
Black River Party Store≈13.1 mi · (989) 733-24809720 M-68/33 Hwy, Onaway · Google · Apple
Dealers licensed by the Michigan DNR to sell live bait; listing is not an endorsement. Distances are straight-line, not driving — and call ahead: hours and stock change. Source: Michigan DNR retail bait dealer data.
Quick answers

Cornwall Creek Floodin — common questions

How deep is Cornwall Creek Floodin?

The deepest contour on the Michigan DNR bathymetric survey of Cornwall Creek Floodin is 25 ft. That is the deepest depth the historical survey map records, which may differ from the deepest point of the lake itself.

How big is Cornwall Creek Floodin?

Cornwall Creek Floodin covers about 162 acres in Cheboygan County, Michigan.

What is the average depth of Cornwall Creek Floodin?

The estimated mean depth of Cornwall Creek Floodin is 10.5 ft, calculated from the survey contours.

What fish are in Cornwall Creek Floodin?

Species with survey, catch or recent-stocking evidence include largemouth bass, bluegill, pumpkinseed. The page shows the evidence behind each.

Is there public access to Cornwall Creek Floodin?

No public launch for Cornwall Creek Floodin appears in the Michigan DNR access data. That is not the same as the lake being private -- municipal and private ramps are not in that source.