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LakeGrade
Eutrophic

Eutrophic Lakes in Minnesota & Wisconsin

High nutrients, frequent algae, reduced clarity. 952 lakes (25% of all graded lakes).

LakeCountyStateGradeClarityDepth
Kettle LakeCarltonMNB
Erie LakeMeekerMNB34 ft
Big Rice LakeSt. LouisMNB5 ft
North Lake 3GoodhueMNB
North White Ash LakePolkWIB16 ft9 ft
Boot LakeVilasWIB19 ft
Big Twin LakeWausharaWIB13 ft
Unnamed LakeDouglasWIB6 ft
Unnamed LakeWashburnWIB
Okauchee Lake-Site No. 1-Near OkaucheeWaukeshaWIB90 ft
L St Germain Lk Site K @ S. Bay LakeVilasWIB53 ft
Lk Superior LakeDouglasWIB
Little Wood LakeBurnettWIB23 ft
Delavan LakeWalworthWIB52 ft
Dunes Lake Just Us of OutletDoorWIB
Inlet To Dunes LakeDoorWIB1 ft
East Wetland Inlet To Lake ReeBayfieldWIB
Indian School LakeSawyerWIB6 ft
Wiley LakeBayfieldWIB
Jessie LakeBeltramiMNB4.6 ft35 ft
South Lindstrom LakeChisagoMNB5.2 ft34 ft
Simian LakeSt. LouisMNB4.5 ft
Chevans Lake DeepCookMNB1.9 ft
Big LakeStearnsMNB6.9 ft42 ft
Unnamed LakeHennepinMNB4.3 ft
Lemay LakeDakotaMNB6.9 ft15.5 ft
Big Pine LakeOtter TailMNB7 ft76 ft
White Iron LakeLakeMNB4.5 ft47 ft
Arrowhead LakeCrow WingMNB6.9 ft13 ft
Comfort LakeChisagoMNB7 ft47 ft
Sand Hill LakePolkMNB6.9 ft17 ft
Elbow LakeCookMNB3.7 ft9 ft
Rush LakeOtter TailMNB6.9 ft68 ft
Upper Twin LakeHubbardMNB6.9 ft12 ft
Toad LakeBeckerMNB7 ft29 ft
Badger LakePolkMNB6.7 ft19 ft
Sarah LakePolkMNB7.9 ft27 ft
Waverly LakeWrightMNB7.4 ft70.5 ft
Shoepack LakeSt. LouisMNB4.6 ft24 ft
Kittleson LakePolkMNB7.1 ft
Peter LakeHennepinMNB9.9 ft
Magda LakeHennepinMNB14.1 ft
Beaver Hut LakeLakeMNB3.4 ft12 ft
West Sturgeon LakeItascaMNB4.1 ft31 ft
Dahler LakeCrow WingMNB4.4 ft
Vermillion LakeCassMNB7.1 ft27 ft
Central Mystic LakeScottMNB
Rice LakeVilasWIB10.7 ft7 ft
Rice LakeGrantWIB15.1 ft
Little St Germain LakeVilasWIB11.5 ft53 ft
Little Trade LakeBurnettWIB11.5 ft19 ft
Helen LakeIowaWIB11.3 ft28 ft
Lake KegonsaDaneWIB12.3 ft32 ft
Crystal LakeBarronWIB10.7 ft22 ft
Magnor LakePolkWIB11.9 ft26 ft
Apple River Flowage LakePolkWIB18 ft18 ft
Mirror LakeSaukWIB15.6 ft
Holcombe Flowage LakeChippewaWIB12.3 ft
Lower Turtle LakeBarronWIB12.3 ft24 ft
Little Blake LakePolkWIB11.5 ft14 ft
Wagner LakeShawanoWIB13.1 ft15 ft
Omer LakePolkWIB16.4 ft
Round LakeHennepinMNC7.4 ft37 ft
Horseshoe LakeChisagoMNC4.6 ft53 ft
Schram LakeBeltramiMNC3.9 ft
Green LakeChisagoMNC6 ft32 ft
George LakeAnokaMNC7.3 ft32 ft
Coon LakeAnokaMNC5.6 ft27 ft
Perch LakeCarltonMNC4.9 ft
Jensen LakeDakotaMNC5 ft
Jaskari LakeCarltonMNC6.4 ft
Rice Portage LakeCarltonMNC1.3 ft
Middle Pigeon LakeItascaMNC7.5 ft
Fannie LakeIsantiMNC7 ft33 ft
Teal Lake DeepCookMNC3.3 ft
Cut Foot Sioux LakeItascaMNC7.5 ft
Mud LakeWrightMNC5.6 ft65 ft
Birch LakeSt. LouisMNC3.9 ft25 ft
Round LakeRamseyMNC8.2 ft
Long LakeMeekerMNC7.5 ft28 ft
Unnamed LakeSt. LouisMNC4.8 ft7 ft
Unnamed LakeOtter TailMNC3.9 ft
Unnamed LakeBrownMNC0.3 ft
Twin LakeRamseyMNC7.9 ft33 ft
Elms LakeIsantiMNC6.9 ft26 ft
Blue LakeIsantiMNC8.9 ft31 ft
Eagle LakeCarltonMNC7 ft35 ft
Auburn LakeCarverMNC7.2 ft84 ft
Colby LakeSt. LouisMNC3.5 ft30 ft
Johanna LakeRamseyMNC7.2 ft43 ft
Fish LakeDakotaMNC6.9 ft33.5 ft
Sand LakeCarltonMNC5 ft27 ft
Beaver LakeRamseyMNC7.9 ft11 ft
Battle Creek LakeWashingtonMNC7.4 ft15.3 ft
Union LakeWrightMNC5.5 ft35 ft
Island LakeItascaMNC8.9 ft35 ft
Portage LakeHubbardMNC5.7 ft17 ft
Gull LakeBeltramiMNC5.9 ft23 ft
Koronis LakeStearnsMNC6 ft132 ft
Silver LakeRamseyMNC7 ft18 ft

Showing 100 of 952 eutrophic lakes.

Frequently Asked Questions

What is an eutrophic lake?

High nutrients, frequent algae, reduced clarity. There are 952 eutrophic lakes in Minnesota and Wisconsin, representing 25% of all graded lakes.

Can you swim in eutrophic lakes?

Eutrophic lakes may have algae blooms that make swimming inadvisable at times. Check for algae advisories before swimming.