Martin County Lake Quality
Minnesota, 14 lakes, average grade F (Algae-prone)
Only 14 lakes in Martin County carry an active grade. The county-level summary is therefore representative of those specific lakes, not necessarily of every water body in the county. The county average is F — the most-stressed bracket in our rubric. Most monitored lakes here show persistent nutrient loading and algal pressure.
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 Mud Lake (F); the most-stressed is Mud Lake (F).
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Quick Answers for Martin County
Planning a trip? Check special fishing regulations for Mud Lake, whether the fish are safe to eat, and the best times to fish — or browse the full Minnesota regulations index.
Fishing in Martin County
DNR Reports (20)
Minnesota DNR LakeFinder resources for lakes in Martin County. browse all reports →
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — South SilverFisheries Lake Survey · MN DNR LakeFinder
- —Fisheries Lake Survey — SissetonFisheries Lake Survey · MN DNR LakeFinder
- —Fisheries Lake Survey — BrightFisheries Lake Survey · MN DNR LakeFinder
- —Fisheries Lake Survey — HallFisheries Lake Survey · MN DNR LakeFinder
- —Fisheries Lake Survey — GeorgeFisheries Lake Survey · MN DNR LakeFinder
- —Fisheries Lake Survey — BuddFisheries Lake Survey · MN DNR LakeFinder
- —Fisheries Lake Survey — AmberFisheries Lake Survey · MN DNR LakeFinder
- —Fish Stocking History — AmberFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — AmberPublic Water Access Sites · MN DNR LakeFinder
- —Fish Stocking History — BuddFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — BuddPublic Water Access Sites · MN DNR LakeFinder
- —Fish Stocking History — GeorgeFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — GeorgePublic Water Access Sites · MN DNR LakeFinder
- —Fish Stocking History — HallFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — HallPublic Water Access Sites · MN DNR LakeFinder
- —Public Water Access Sites — BrightPublic Water Access Sites · MN DNR LakeFinder
- —Fish Stocking History — SissetonFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — SissetonPublic Water Access Sites · MN DNR LakeFinder
- —Fish Stocking History — South SilverFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — South SilverPublic Water Access Sites · MN DNR LakeFinder
All Lakes in Martin County
14 lakes · 12 graded, 2 not rated12 graded lakes · 2 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Max Depth | Access |
|---|---|---|---|---|---|---|---|---|
| 1 | FMud LakeMartin | F | 1.6 ft | 125.5 µg/L | 53.4 µg/L | No recent samples | 19 ft | ✓ Public |
| 2 | FClear LakeMartin | F | 1 ft | 74.5 µg/L | 52.1 µg/L | No recent samples | 7 ft | ✓ Public |
| 3 | FGeorge LakeMartin | F | 2 ft | 115 µg/L | 77.4 µg/L | No recent samples | 11 ft | ✓ Public |
| 4 | FHall LakeMartin | F | 3 ft | 96 µg/L | 57.4 µg/L | No recent samples | 27 ft | ✓ Public |
| 5 | FSisseton LakeMartin | F | 2.5 ft | 94 µg/L | 65 µg/L | No recent samples | 19 ft | ✓ Public |
| 6 | FFox LakeMartin | F | 1 ft | 197 µg/L | 65.8 µg/L | No recent samples | 20 ft | ✓ Public |
| 7 | FAmber LakeMartin | F | 2 ft | 108 µg/L | 63.2 µg/L | No recent samples | 19 ft | ✓ Public |
| 8 | FBudd LakeMartin | F | 3.2 ft | 86 µg/L | 64.1 µg/L | No recent samples | 23 ft | ✓ Public |
| 9 | FNorth Silver LakeMartin | F | 4.9 ft | 68 µg/L | 51.2 µg/L | No recent samples | No recent samples | Carry-in |
| 10 | FWillmert LakeMartin | F | 3.3 ft | 68.5 µg/L | 52.1 µg/L | No recent samples | 8 ft | ✓ Public |
| 11 | FBright LakeMartin | F | 1 ft | 110.5 µg/L | 54.1 µg/L | No recent samples | 7 ft | ✓ Public |
| 12 | FTemperance LakeMartin | F | 0.7 ft | 165.5 µg/L | 88.6 µg/L | No recent samples | 5 ft | ✓ Public |
| NRSouth Silver LakeMartin | NR | 3 ft | No recent samples | No recent samples | No recent samples | 22 ft | ✓ Public | |
| NRLittle Tuttle LakeMartin | NR | 1 ft | No recent samples | No recent samples | No recent samples | 7 ft | ✓ Public |
NR = not rated: the monitoring record does not meet the evidence bar for a grade. That is EPA Integrated Reporting Category 3 (insufficient information), not a failing grade. How grading works.
Lake Match
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Six questions — swimming, fishing, quiet, cabins, drive time — and a shortlist of graded lakes that fit, with the water quality behind each one.
Other Counties in Minnesota
See how Martin County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 39 states and 2 Canadian provinces.
Source: EPA National Aquatic Resource Surveys, 2026.