Imp Lake
depth
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Depth scale
Survey readout
Imp Lake is mapped to a depth of 80 ft on the Michigan DNR survey and covers about 93 acres in Gogebic County, Michigan.
Measured from the Michigan DNR inland-lake contour survey.
- Deepest mapped contour
- 80 ft
- Mean depth
- 32.8 ft · estimated
- Surface area
- 93 acres
- Estimated volume
- 3,045 acre-ft · 992M gal
- Shoreline
- 1.67 mi · lobed
- Aquatic vegetation
- 4% of surface · NDVI estimate
- Public access
- Boat Launch
Additional depth details7 contours
- Contour depths
- 0–80 ft
- Recorded point soundings
- 80 ft
14.4% of the surface sits over water shallower than 10 ft; 70.8% 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 Depth, area and volume are estimated from the interpolated survey surface — historical reference, not measurement.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
- 46.21661, -89.07563
- MI DNR lake ID
- L43711
- Vertical exaggeration
- 1.4×
- Basemap
- USDA NAIP · public domain
- Model size
- 2.4 MB
Watercraft rules
county-enforced local controls · MI DNROfficial rule details1 rule
Paddling
Paddling Index methodology v1.0 · calculated 2026-08-21Imp Lake has a heavily wooded and largely undeveloped setting, generally sheltered geometry, limited nearby major-road exposure. Watercraft controls: High-speed boating prohibited.
Why this score?5 components
Included in the index
| Component | Rating | Points of weight | Measurement |
|---|---|---|---|
| Natural setting | Excellent | 30.3 of 35 | 87% natural land cover within 150 m of shore (77% forest, 8% wetland; 8% developed) |
| Geometric wind exposure | Very Good | 22.3 of 29 | mean fetch 721 m · 0% of sampled water within 500 m of shelter · generally short fetch |
| Watercraft controls | High-speed boating prohibited | 15.0 of 18 | High-speed boating prohibited |
| Public access | Not listed | — | No DNR-listed access site. Township, county and road-end launches are not in this source, so this is not evidence that access is poor — the component is excluded and the remaining weights are renormalized. |
| Road isolation | Very Good | 13.3 of 18 | limited nearby major-road exposure · 7 MDOT-classified segments within 1.2 km, peak 1,321 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
- High — 77% forest and 8% wetland cover within 150 m of shore
Compare Michigan lakes by Paddling Index →
Fish you might catch
from angler catches & active stocking2 species with recent evidence in this lake — sized relative to each other. Illustrations are AI-generated representative adults in everyday colours, not photographs (provenance).
Splake
Smallmouth BassHistorically stocked, no recent evidence: Brook Trout (last planted 2008), Brown Trout (last planted 1989), Lake Trout (last planted 1979) — not shown above.
Fishing 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 · 2007–2022Master Angler catches recorded on this lake — too few to show a pattern, so they are listed individually.
DNR stocking
state stocking record · 1979–2026Fish the Michigan DNR has planted in this lake — what was added, distinct from what a survey netted above.
Complete stocking history3 older species
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 distanceImp Lake — common questions
How deep is Imp Lake?
The deepest contour on the Michigan DNR bathymetric survey of Imp Lake is 80 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 Imp Lake?
Imp Lake covers about 93 acres in Gogebic County, Michigan.
What is the average depth of Imp Lake?
The estimated mean depth of Imp Lake is 32.8 ft, calculated from the survey contours.
What fish are in Imp Lake?
Species with survey, catch or recent-stocking evidence include smallmouth bass, splake. The page shows the evidence behind each.
Is there public access to Imp Lake?
Yes. The Michigan DNR boat-launch data identifies 1 public access site on Imp Lake, including Imp Lake.
