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LakeGrade
Mesotrophic

Mesotrophic Lakes in Minnesota & Wisconsin

Moderate nutrients, good water quality. 1,232 lakes (33% of all graded lakes).

OligotrophicMesotrophicEutrophicHypereutrophic
LakeCountyStateGradeClarityDepth
Pelican LakeOtter TailMNA16.1 ft55 ft
Birch LakeWrightMNA15 ft52 ft
Whitefish LakeCrow WingMNA15.1 ft138 ft
Chippewa LakeDouglasMNA15.1 ft95 ft
Little Toad LakeBeckerMNA15 ft65 ft
Island LakeCrow WingMNA—36 ft
Crooked LakeStearnsMNA15 ft35 ft
Mukooda LakeSt. LouisMNA16.6 ft78 ft
Alexander LakeMorrisonMNA16.5 ft64 ft
George LakeKandiyohiMNA15 ft34 ft
Brickyard LakeCarverMNA15.1 ft43 ft
Little Bass LakeClearwaterMNA—35 ft
Little Hubert LakeCrow WingMNA18 ft41 ft
White Bear LakeWashingtonMNA15 ft83 ft
Pine LakeCassMNA16 ft25 ft
Lougee LakeCrow WingMNA16 ft53 ft
Rose LakeSt. LouisMNA—31 ft
Clamshell LakeCrow WingMNA15.1 ft44 ft
Spring LakeHubbardMNA—36 ft
Lottie LakeDouglasMNA16.1 ft31 ft
Edward LakeCrow WingMNA15.5 ft75 ft
South Sugar LakeItascaMNA15 ft36 ft
Grass LakeRamseyMNA——
Barnesville LakeClayMNA—17 ft
Laxon LakeBeltramiMNA——
Little Sandy LakeSt. LouisMNA——
Cramer LakeLakeMNA—4 ft
Cabin LakeLakeMNA—3 ft
Sioux LakeItascaMNA—34 ft
Craig LakeCassMNA——
Morph LakeItascaMNA——
Spring LakeWaukeshaWIA—22 ft
Spring LakeWashburnWIA—24 ft
Black Hawk LakeIowaWIA17.2 ft42 ft
Round LakeChippewaWIA18.5 ft18 ft
Pewaukee LakeWaukeshaWIA18.9 ft45 ft
Big LakeVilasWIA—30 ft
Lake of the FallsIronWIA16.4 ft23 ft
Turtle Flambeau Flowage LakeIronWIA19.7 ft—
Shadow LakeOcontoWIA19.7 ft—
Browns LakeRacineWIA15.9 ft44 ft
Lost LakeMarinetteWIA—18 ft
Van Zile LakeForestWIA17.2 ft17 ft
Long Lake 44-40eIronWIA18 ft34 ft
Rush LakeVilasWIA16.4 ft—
Big Bass LakeMarathonWIA19.7 ft13 ft
Blueberry LakeVilasWIA——
Pike LakePolkWIA—33 ft
Ward LakeBurnettWIA—21 ft
Unnamed LakeOzaukeeWIA——
Patrick LakeAdamsWIA16.4 ft21 ft
Lower Kimball LakeWashburnWIA19.7 ft—
Gates LakeAshlandWIA—17 ft
Smith LakeMarinetteWIA—11 ft
Peters LakeWalworthWIA18.3 ft—
Taylor Lake-Deep HoleBayfieldWIA19.7 ft15 ft
Lake ThirtyBarronWIA15.8 ft27 ft
Okauchee Lake-Site No. 4-at OkaucheeWaukeshaWIA—90 ft
Okauchee Lake-Site No. 3-at OkaucheeWaukeshaWIA—90 ft
Lk Superior .09 Mi N of Poplar Creek Mouth LakeDouglasWIA——
Cloud LakeForestWIA—25 ft
Tea LakeAshlandWIA—48 ft
Trout Bog LakeVilasWIA—24 ft
Crystal Bog LakeVilasWIA—8 ft
Billy Boy Flowage LakeSawyerWIA—46 ft
Little Trout LakeVilasWIA—98 ft
Lake HelenPortageWIA—20 ft
Little Mccall LakeMarinetteWIA—21 ft
Park Creek PondDouglasWIA—7 ft
Round Lake Northeast SiteChippewaWIA—18 ft
Sanborn LakeVilasWIA—13 ft
Moss Lake EastVilasWIA—29 ft
Amy Bell LakeWashingtonWIA—37 ft
Trego LakeWashburnWIA—36 ft
Little Archibald LakeOcontoWIA—65 ft
Tambling LakeVilasWIA—11 ft
Moldenhauer LakeOzaukeeWIA—32 ft
Greater Bass LakeLangladeWIA—25 ft
Csmi 2015 Station Q LakeMilwaukeeWIA——
Big LakeCarltonMNA11.8 ft25 ft
Crooked LakeCassMNA12 ft74 ft
Ames LakeItascaMNA10 ft51 ft
Lower Birch LakeIsantiMNA10.8 ft—
Lost LakeSt. LouisMNA15.1 ft—
Steamboat LakeCassMNA12 ft93 ft
Third LakeCarltonMNA10.2 ft—
Sofie LakeCarltonMNA15.4 ft—
Pat Martin LakeCarltonMNA13.6 ft—
Lac LakeCarltonMNA14.6 ft—
Taylor Lake DeepCookMNA10.6 ft—
Trout Lake DeepCookMNA10.7 ft—
Ml-Thains LakeMille LacsMNA16.1 ft42 ft
Ml-Seventeen LakeAitkinMNA18.8 ft42 ft
Ml LakeMille LacsMNA20.2 ft42 ft
Ml LakeMille LacsMNA22.2 ft42 ft
Ml-Vineland LakeMille LacsMNA25.6 ft42 ft
Ml-Peterson LakeMille LacsMNA20.2 ft42 ft
Ml-Malone LakeMille LacsMNA17.5 ft42 ft
Boxell LakeCassMNA14.5 ft27 ft
East Hunter LakeSherburneMNA22.1 ft—

Showing 100 of 1,232 mesotrophic lakes.

Frequently Asked Questions

What is an mesotrophic lake?

Moderate nutrients, good water quality. There are 1,232 mesotrophic lakes in Minnesota and Wisconsin, representing 33% of all graded lakes.

Can you swim in mesotrophic lakes?

Mesotrophic lakes are generally good for swimming with moderate clarity and low algae risk.