Long Lake
depth
Get directions
Depth scale
Survey readout
Long Lake is mapped to a depth of 12 ft on the Michigan DNR survey and covers about 174 acres in Oakland County, Michigan.
Measured from the Michigan DNR inland-lake contour survey.
- Deepest sounding
- 12 ft
- Mean depth
- 5.5 ft · estimated
- Surface area
- 174 acres
- Estimated volume
- 964 acre-ft · 314M gal
- Shoreline
- 3.02 mi · irregular
- Aquatic vegetation
- 4% of surface · NDVI estimate
- Public access
- Boat Launch · Rec Passport
Additional depth details4 contours
- Contour depths
- 0–12 ft
- Recorded point soundings
- 12 ft, 12 ft, 12 ft, 12 ft, 12 ft, 12 ft
Other waters with a public launch on this map: Union Lake. Their launches are not marked on the model — only Long Lake’s own are.
86.9% of the surface sits over water shallower than 10 ft; the survey shows 3 distinct basins. Depth, area and volume are estimated from the interpolated survey surface — historical reference, not measurement.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.
⚠ Not for navigationSpot an error? Send a correction
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
- 42.61006, -83.45628
- MI DNR lake ID
- L9310
- Vertical exaggeration
- 3.0×
- Basemap
- USDA NAIP · public domain
- Model size
- 2.4 MB
Paddling
Paddling Index methodology v1.0 · calculated 2026-08-21Long Lake has a substantially developed setting, generally sheltered geometry, substantial 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 | 0.6 of 30 | 10% natural land cover within 150 m of shore (6% forest, 5% wetland; 80% developed) |
| Geometric wind exposure | Very Good | 15.5 of 25 | mean fetch 1,005 m · 0% 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 | Excellent | 15.0 of 15 | 3 sites with DNR boating-facility records · carry-in launch · 3 ramp lanes · 36 trailer spaces |
| Road isolation | Modest | 0.8 of 15 | substantial nearby higher-volume roads · 156 MDOT-classified segments within 1.2 km, peak 31,240 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 4% 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 — 6% forest and 5% wetland cover within 150 m of shore
Compare Michigan lakes by Paddling Index →
Fish you might catch
from DNR surveys24 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
Walleye
Largemouth Bass
Smallmouth Bass
Brown Bullhead
Black Bullhead
Black Crappie
Yellow Bullhead
Redear Sunfish
Yellow Perch
Bluegill
Rock Bass
Warmouth
Hybrid Sunfish
Pumpkinseed
Green Sunfish
Brook Silverside
Banded Killifish
Bluntnose Minnow
Spotfin Shiner
Blackchin Shiner
Blacknose Shiner
Iowa Darter
Sand ShinerFishing rules for this lake Beta
Size and daily limits for the 24 species found here — 24 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
Fishery
DNR SFR 2020-303Gamefish Largemouth Bass 32 · Northern Pike 23 · Walleye 6 · Smallmouth Bass 2
Panfish Bluegill 779 · Yellow Perch 123 · Rock Bass 84
All survey species24 species
Gamefish
Panfish
Bullhead & catfish
Forage & nongame
Non-native species records
1 recordPlants & algae
- Purple Loosestrife
What does non-native mean?
USGS records identify non-native species that have been documented for this lake or its shoreline. Non-native does not necessarily mean invasive, and historical records do not confirm current presence.
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 distanceLong Lake — common questions
How deep is Long Lake?
The deepest contour on the Michigan DNR bathymetric survey of Long Lake is 12 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 Long Lake?
Long Lake covers about 174 acres in Oakland County, Michigan.
What is the average depth of Long Lake?
The estimated mean depth of Long Lake is 5.5 ft, calculated from the survey contours.
What fish are in Long Lake?
Species with survey, catch or recent-stocking evidence include largemouth bass, northern pike, smallmouth bass, walleye, black bullhead, black crappie. The page lists all 24 species and the evidence behind each.
Is there public access to Long Lake?
Yes. The Michigan DNR boat-launch data identifies 1 public access site on Long Lake, including Long Lake.
