Long Lake
depth
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Depth scale
Survey readout
Long Lake is mapped to a depth of 57 ft on the Michigan DNR survey and covers about 348 acres in Ionia County, Michigan.
Measured from the Michigan DNR inland-lake contour survey.
- Deepest sounding
- 57 ft
- Mean depth
- 11.6 ft · estimated
- Surface area
- 348 acres
- Estimated volume
- 4,011 acre-ft · 1,307M gal
- Shoreline
- 3.6 mi · lobed
- Aquatic vegetation
- 2% of surface · NDVI estimate
- Public access
- Boat Launch
Additional depth details9 contours
- Contour depths
- 0–57 ft
- Recorded point soundings
- 57 ft, 21 ft
62.2% of the surface sits over water shallower than 10 ft; 21.2% 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 Depth, area and volume are estimated from the interpolated survey surface — historical reference, not measurement.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
- 43.11308, -85.12292
- MI DNR lake ID
- L14784
- Vertical exaggeration
- 1.74×
- Basemap
- USDA NAIP · public domain
- Model size
- 2.3 MB
Paddling
Paddling Index methodology v1.0 · calculated 2026-08-21Long Lake has a substantially developed setting, moderate open-water exposure, 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 | 3.8 of 30 | 34% natural land cover within 150 m of shore (8% forest, 25% wetland; 46% developed) |
| Geometric wind exposure | Good | 12.7 of 25 | mean fetch 1,321 m · 0% of sampled water within 500 m of shelter · moderate open-water 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 · 11 trailer spaces |
| Road isolation | Mixed | 4.0 of 15 | nearby higher-volume roads · 38 MDOT-classified segments within 1.2 km, peak 1,272 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 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 — 8% forest and 25% wetland cover within 150 m of shore
Compare Michigan lakes by Paddling Index →
Fish you might catch
from angler catches, DNR surveys & active stocking14 species with recent evidence in this lake — sized relative to each other. Illustrations are AI-generated representative adults in everyday colours, not photographs (provenance).
Longnose Gar
Northern Pike
Channel Catfish
Walleye
Largemouth Bass
Bullhead
Black CrappieCrappie
Yellow Perch
Bluegill
Rock Bass
Warmouth
Hybrid Sunfish
PumpkinseedFishing rules for this lake Beta
Size and daily limits for the 14 species found here — 13 open to harvest, 1 with a special rule or closed season.
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.
Official rule text for this lake
“no size limit on Northern Pike and up to five (5) Northern Pike may be retained in the daily possession limit with only one (1) 24-inches or greater.” — FO-206
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 · 2000–2025Trophy-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.
Catch details by species10 species
Biggest on record
Bait: night crawler (8) · artificial lure (6) · live bait (3)
Method: still fishing (19) · spincasting (4) · trolling (2) · ice fishing (2)
Fishery
surveyed 2016 · DNR SFR 2022-329Gamefish Northern Pike 58 · Largemouth Bass 1
Panfish Pumpkinseed 260 · Yellow Perch 108 · Warmouth 45
All survey species8 species
Gamefish
Panfish
DNR stocking
state stocking record · 1988–1990Fish the Michigan DNR has planted in this lake — what was added, distinct from what a survey netted above.
No stockings recorded since 1990 — shown as history.
Non-native species records
2 recordsMussels & snails
- Zebra Mussel
Plants & algae
- Starry Stonewort
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.
Bait & 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 57 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 348 acres in Ionia County, Michigan.
What is the average depth of Long Lake?
The estimated mean depth of Long Lake is 11.6 ft, calculated from the survey contours.
What fish are in Long Lake?
Species with survey, catch or recent-stocking evidence include channel catfish, largemouth bass, northern pike, walleye, black crappie, bluegill. The page lists all 14 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.
