Koma Lake
Koma Lake in Lake County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 5 ft visibility. Maximum depth: 14 ft. Surface area: 250.09 acres.
- Clarity
- 5 ft
- Max depth
- 14 ft
- Area
- 250 acres
- Public access
- No
Next lake in Lake County
Why Koma Lake has no grade
We grade a lake only when its monitoring record clears the evidence bar: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Koma Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded water clarity, but not phosphorus and algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by MPCA and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Koma Lake is a 250-acre lake in Lake County, Minnesota with a maximum depth of 14 feet. The lake supports 8 documented fish species including bluegill, burbot, and lake whitefish. No public access — the lake is private or restricted.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-07-31. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Koma Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Murky, only visible to about 5 ft. Trophic State Index: 54.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 54 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Koma Lake
Compare lakeside cabins, hotels, and vacation rentals near Koma Lake in Lake County, Minnesota — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Koma Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 14 ft |
| Surface Area | 250 acres |
| Shoreline Length | 5.9 mi |
| Littoral Zone | 100% |
| Public Access | No |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Koma Lake
DNR Fisheries Survey Summary
1 survey on file from MN DNR Fisheries. Most recent: 2013-07-26 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Walleye | 7.83 | 0.58 lb |
| White Sucker | 7.33 | 2.5 lb |
| LKW | 6.00 | 1.71 lb |
| Northern Pike | 1.00 | 2.31 lb |
| Yellow Perch | 1.00 | 0.12 lb |
| Rock Bass | 0.67 | 0.37 lb |
CPUE = catch per unit effort, averaged across surveys (excludes juvenile shoreline seining). Higher CPUE = more abundant in standardized sampling.
Length Distributions
Number of fish caught at each inch class in the most recent survey that recorded lengths. Red dashed line marks an approximate trophy threshold for that species.
Walleye
White Sucker
LKW
Northern Pike
From the 2013-07-26 survey
Koma Lake is 250 acres and has a maximum depth of 15.5 feet. The lake is located over 20 miles northeast of Isabella, Minnesota and entirely within the Boundary Waters Canoe Area and Wilderness. The lake is accessible via 2 portage routes. The first access being a series of three portages (24 rods, 48 rods, and 129…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Koma Lake. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — KomaFisheries Lake Survey · MN DNR LakeFinder
Nearby Lakes in Lake County
Frequently asked questions about Koma Lake
What is the water quality grade for Koma Lake?
- Koma Lake in Lake County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 5 ft visibility. Maximum depth: 14 ft. Surface area: 250.09 acres.
Is Koma Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Koma Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
How deep is Koma Lake?
- Koma Lake has a maximum depth of 14 feet. The lake covers 250.09 acres.
What fish are in Koma Lake?
- Fish species found in Koma Lake include bluegill, burbot, lake whitefish, northern pike, rock bass, walleye, white sucker, yellow perch. Koma Lake is located in Lake County, Minnesota.
Explore Koma Lake across LakeGrade
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Where this data comes from
1 measurement from 1 monitoring station, 2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA1 sample · 2024
Analytical methods
- Field measurement/observation, generic method
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder