Kanabec County Lake Quality
Minnesota, 7 lakes, average grade D (Poor)
Kanabec County has 7 graded lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. The county-wide average grade is D — water quality issues are persistent across most of the monitored basins. 2 lakes fall into the F bracket outright.
The county's lakes lean shallow, which makes the grades sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest lake on the books is Devil'S Lake (C); the most-stressed is Fish Lake (F).
Quick Answers for Kanabec County
Planning a trip? Check special fishing regulations for Devil'S Lake, whether the fish are safe to eat, and the best times to fish — or browse the full Minnesota regulations index.
DNR Reports (23)
Minnesota DNR LakeFinder resources for lakes in Kanabec County. Showing 12 most recent — browse all reports →
- —Fisheries Lake Survey — PomroyFisheries Lake Survey · MN DNR LakeFinder
- —Fisheries Lake Survey — MoraFisheries Lake Survey · MN DNR LakeFinder
- —Fisheries Lake Survey — LewisFisheries Lake Survey · MN DNR LakeFinder
- —Fisheries Lake Survey — KnifeFisheries Lake Survey · MN DNR LakeFinder
- —Fisheries Lake Survey — FishFisheries Lake Survey · MN DNR LakeFinder
- —Fisheries Lake Survey — DevilsFisheries Lake Survey · MN DNR LakeFinder
- —Fisheries Lake Survey — AnnFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Ann (0289)Aquatic Plant Report · MN DNR LakeFinder
- —Fish Stocking History — AnnFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — AnnPublic Water Access Sites · MN DNR LakeFinder
- —Aquatic Plant Report — Devils (0239)Aquatic Plant Report · MN DNR LakeFinder
- —Aquatic Plant Report — Fish (0284)Aquatic Plant Report · MN DNR LakeFinder
All Lakes in Kanabec County
| Rank | Lake | Grade | Clarity | Max Depth | Phosphorus |
|---|---|---|---|---|---|
| 1 | Devil'S Lake | C | 7.3 ft | 19 ft | - |
| 2 | Lewis Lake | C | 7 ft | 48 ft | - |
| 3 | Pomroy Lake | D | 5.5 ft | 11 ft | - |
| 4 | Mora Lake | D | 5 ft | 24 ft | - |
| 5 | Ann Lake | D | 2 ft | 17 ft | 78.5 µg/L |
| 6 | Fish Lake | F | 2 ft | 8 ft | - |
| 7 | Knife Lake | F | 2.3 ft | 15 ft | 161.5 µg/L |
Source: EPA National Aquatic Resource Surveys, 2026.