Duncan Lake
depth
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Depth scale
Survey readout
Duncan Lake is mapped to a depth of 55 ft on the Michigan DNR survey and covers about 136 acres in Barry County, Michigan.
Measured from the Michigan DNR inland-lake contour survey (depths read from the survey's isobath field; this lake's summary-depth column is blank in the source).
- Deepest mapped contour
- 55 ft
- Mean depth
- 26 ft · estimated
- Surface area
- 136 acres
- Estimated volume
- 3,547 acre-ft · 1,156M gal
- Shoreline
- 4.12 mi · irregular
- Aquatic vegetation
- 2% of surface · NDVI estimate
- Public access
- Boat Launch
Additional depth details8 contours
- Contour depths
- 0–55 ft
- Recorded point soundings
- 55 ft
23.6% of the surface sits over water shallower than 10 ft; 61.9% is deeper than 20 ft. Depth, area and volume are estimated from the interpolated survey surface — historical reference, not measurement.
Compare with another lakeProvenance
Sources: MI DNR inland lake contours, USGS 3DEP, USDA NAIP (public domain), OpenStreetMap (ODbL), MI DNR Boat Launches.
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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
- 42.75413, -85.53256
- MI DNR lake ID
- L23024
- Vertical exaggeration
- 1.81×
- Basemap
- USDA NAIP · public domain
- Model size
- 2.2 MB
Paddling
Paddling Index methodology v1.0 · calculated 2026-08-21Duncan Lake has a substantially developed setting, generally sheltered geometry, nearby higher-volume roads. No special watercraft restriction is identified in the current source.
Why this score?5 components
Included in the index
| Component | Rating | Points of weight | Measurement |
|---|---|---|---|
| Natural setting | Modest | 5.9 of 30 | 34% natural land cover within 150 m of shore (5% forest, 28% wetland; 32% developed) |
| Geometric wind exposure | Very Good | 18.6 of 25 | mean fetch 778 m · 20% of sampled water within 500 m of shelter · generally short fetch |
| Watercraft controls | None identified | 7.5 of 15 | No special watercraft restriction identified in the current DNR source. Motors permitted, subject to general law. |
| Public access | Good | 12.8 of 15 | 1 site with DNR boating-facility records · 1 ramp lane · 15 trailer spaces |
| Road isolation | Mixed | 6.0 of 15 | nearby higher-volume roads · 17 MDOT-classified segments within 1.2 km, peak 5,458 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
- Moderate — narrow in places — wakes would carry across parts of the lake
- Aquatic vegetation
- Low — approximately 2% 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
- Limited — 5% forest and 28% wetland cover within 150 m of shore
Compare Michigan lakes by Paddling Index →
Fish you might catch
from angler catches2 species with recent evidence in this lake — sized relative to each other. Illustrations are AI-generated representative adults in everyday colours, not photographs (provenance).
Northern Pike
CrappieFishing rules for this lake Beta
Size and daily limits for the 2 species found here — 2 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.
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
Notable catches
Master Angler program · 1996–2023Master Angler catches recorded on this lake — too few to show a pattern, so they are listed individually.
Non-native species records
No non-native species recorded in the available dataset. This does not confirm that no non-native species are present.
Source: Midwest Glacial Lakes Partnership Conservation Planner; underlying nonindigenous species records from the USGS Nonindigenous Aquatic Species database.
Bait & tackle nearby
licensed retail bait dealers · straight-line distanceDuncan Lake — common questions
How deep is Duncan Lake?
The deepest contour on the Michigan DNR bathymetric survey of Duncan Lake is 55 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 Duncan Lake?
Duncan Lake covers about 136 acres in Barry County, Michigan.
What is the average depth of Duncan Lake?
The estimated mean depth of Duncan Lake is 26 ft, calculated from the survey contours.
What fish are in Duncan Lake?
Species with survey, catch or recent-stocking evidence include northern pike, crappie. The page shows the evidence behind each.
Is there public access to Duncan Lake?
Yes. The Michigan DNR boat-launch data identifies 1 public access site on Duncan Lake, including Duncan Lake.
