Late afternoon sun over Slim Lake, scattering a bright path across wind-textured water

Martin County Lake Quality

Minnesota, 49 lakes, measured by Minnesota PCA

There are 49 monitored lakes in Martin County. The mix is varied enough that the county-level average tells you the broad strokes, not the choose-this-cabin specifics. 12 of those lakes carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. The monitored lakes here are mostly shallow, productive basins where summer algae is common; each lake page shows its own readings beside the EPA condition class.

The county's lakes lean shallow, which makes the readings sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest measured lake is Mud Lake.

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Where to stay near Martin County

Top-rated places to stay near Martin County

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Quick Answers for Martin County

Cleanest lakes in Martin County →Cleanest lakes in Minnesota →Best swimming lakes in Minnesota →

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

Martin County Fishing Guide

Fish species and the cleanest lakes 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).

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Fisheries Lake Survey — South Silver
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Sisseton
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Bright
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Hall
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — George
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Budd
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Amber
Fisheries Lake Survey · MN DNR LakeFinder
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Fish Stocking History — Amber
Fish Stocking History · MN DNR LakeFinder
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Public Water Access Sites — Amber
Public Water Access Sites · MN DNR LakeFinder
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Fish Stocking History — Budd
Fish Stocking History · MN DNR LakeFinder
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Public Water Access Sites — Budd
Public Water Access Sites · MN DNR LakeFinder
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Fish Stocking History — George
Fish Stocking History · MN DNR LakeFinder
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Public Water Access Sites — George
Public Water Access Sites · MN DNR LakeFinder
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Fish Stocking History — Hall
Fish Stocking History · MN DNR LakeFinder
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Public Water Access Sites — Hall
Public Water Access Sites · MN DNR LakeFinder
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Public Water Access Sites — Bright
Public Water Access Sites · MN DNR LakeFinder
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Fish Stocking History — Sisseton
Fish Stocking History · MN DNR LakeFinder
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Public Water Access Sites — Sisseton
Public Water Access Sites · MN DNR LakeFinder
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Fish Stocking History — South Silver
Fish Stocking History · MN DNR LakeFinder
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Public Water Access Sites — South Silver
Public Water Access Sites · MN DNR LakeFinder

All Lakes in Martin County

49 lakes · 12 ranked on readings, 37 without enough sampling12 lakes ranked on readings · 37 without enough sampling, hidden

Include not-rated lakes (37)

#	Lake	Clarity	Phosphorus	Algae	Trophic	Max Depth	Access
1	Mud LakeMartin	1.6 ft	125.5 µg/L	53.4 µg/L	No recent samples	19 ft	✓ Public
2	Clear LakeMartin	1 ft	74.5 µg/L	52.1 µg/L	No recent samples	7 ft	✓ Public
3	George LakeMartin	2 ft	115 µg/L	77.4 µg/L	No recent samples	11 ft	✓ Public
4	Hall LakeMartin	3 ft	96 µg/L	57.4 µg/L	No recent samples	27 ft	✓ Public
5	Sisseton LakeMartin	2.5 ft	94 µg/L	65 µg/L	No recent samples	19 ft	✓ Public
6	Fox LakeMartin	1 ft	197 µg/L	65.8 µg/L	No recent samples	20 ft	✓ Public
7	Amber LakeMartin	2 ft	108 µg/L	63.2 µg/L	No recent samples	19 ft	✓ Public
8	Budd LakeMartin	3.2 ft	86 µg/L	64.1 µg/L	No recent samples	23 ft	✓ Public
9	North Silver LakeMartin	4.9 ft	68 µg/L	51.2 µg/L	No recent samples	No recent samples	Carry-in
10	Willmert LakeMartin	3.3 ft	68.5 µg/L	52.1 µg/L	No recent samples	8 ft	✓ Public
11	Bright LakeMartin	1 ft	110.5 µg/L	54.1 µg/L	No recent samples	7 ft	✓ Public
12	Temperance LakeMartin	0.7 ft	165.5 µg/L	88.6 µg/L	No recent samples	5 ft	✓ Public
	South Silver LakeMartin	3 ft	No recent samples	No recent samples	No recent samples	22 ft	✓ Public
	Little Tuttle LakeMartin	1 ft	No recent samples	No recent samples	No recent samples	7 ft	✓ Public
	Okamanpeedan LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	5 ft	✓ Public
	Iowa LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	6.6 ft	✓ Public
	Swag LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Perch LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	3 ft	Not recorded
	Murphy LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Martin LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Rose LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Sager LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	East Chain LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	North Silver LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	5.5 ft	Not recorded
	Little Hall LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Lake ImogeneMartin	No recent samples	No recent samples	No recent samples	No recent samples	6.6 ft	✓ Public
	High LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Lake CharlotteMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Kiester LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Canright LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Buffalo LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Eagle LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Clam LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	5.9 ft	✓ Public
	Lake SeymourMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Round LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Pierce LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Clayton LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Dutton SloughMartin	No recent samples	No recent samples	No recent samples	No recent samples	3.3 ft	Not recorded
	Susan LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Fish LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Big Twin LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	13.2 ft	✓ Public
	Watkins LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Fish LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	✓ Public
	Buffalo LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	North LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Little Twin LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Cedar LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	6.5 ft	✓ Public
	Creek LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Round LakeMartin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded

NR = no nutrient or algae reading on record. The measurements are published as the authority reports them. Where the data comes from.

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Source: the Minnesota Pollution Control Agency and the Minnesota DNR. See data sources.