Hart Lake
depth
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Depth scale
Survey readout
Hart Lake is mapped to a depth of 17 ft on the Michigan DNR survey and covers about 4.9 acres in Oakland County, Michigan.
Measured from the Michigan DNR inland-lake contour survey.
- Deepest sounding
- 17 ft
- Mean depth
- 7.7 ft · estimated
- Surface area
- 4.9 acres
- Estimated volume
- 38 acre-ft · 12M gal
- Shoreline
- 0.37 mi · round
- Aquatic vegetation
- 26% of surface · NDVI estimate
- Public access
- Boat Launch · Rec Passport
- In
- Bald Mountain Recreation Area · 4,519 ac
Additional depth details4 contours
- Contour depths
- 0–17 ft
- Recorded point soundings
- 17 ft, 17 ft
68.1% of the surface sits over water shallower than 10 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 Depth, area and volume are estimated from the interpolated survey surface — historical reference, not measurement.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
- 42.78294, -83.19882
- MI DNR lake ID
- L9478
- Vertical exaggeration
- 3.0×
- Basemap
- USDA NAIP · public domain
- Model size
- 0.3 MB
Paddling
Paddling Index methodology v1.0 · calculated 2026-08-21Hart Lake has a heavily wooded and largely undeveloped setting, well sheltered geometry, some nearby classified 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 | Excellent | 27.2 of 30 | 88% natural land cover within 150 m of shore (27% forest, 61% wetland; 11% developed) |
| Geometric wind exposure | Excellent | 25.0 of 25 | mean fetch 143 m · 100% of sampled water within 500 m of shelter · short fetch in most directions |
| 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 | Excellent | 15.0 of 15 | 2 sites with DNR boating-facility records · carry-in launch · 2 trailer spaces |
| Road isolation | Good | 9.1 of 15 | some nearby classified roads · 6 MDOT-classified segments within 1.2 km, peak 5,793 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
- High — narrow throughout — passing wakes would reach most of the water
- Aquatic vegetation
- Moderate — approximately 26% 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 — 27% forest and 61% wetland cover within 150 m of shore
Compare Michigan lakes by Paddling Index →
Fish you might catch
from angler catches1 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 BassFishing rules for this lake Beta
Size and daily limits for the 1 species found here — 1 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 · 1997One Master Angler catch is on record for this lake: 24″ largemouth bass in 1997.
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.
At the lake
community-mapped amenities · straight-line distanceBait & tackle nearby
licensed retail bait dealers · straight-line distanceHart Lake — common questions
How deep is Hart Lake?
The deepest contour on the Michigan DNR bathymetric survey of Hart Lake is 17 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 Hart Lake?
Hart Lake covers about 4.9 acres in Oakland County, Michigan.
What is the average depth of Hart Lake?
The estimated mean depth of Hart Lake is 7.7 ft, calculated from the survey contours.
What fish are in Hart Lake?
Species with survey, catch or recent-stocking evidence include largemouth bass. The page shows the evidence behind each.
Is there public access to Hart Lake?
Yes. The Michigan DNR boat-launch data identifies 1 public access site on Hart Lake, including Hart Lake.
