Skip to main content
LakeQuality
F

Waseca County Lake Quality

Minnesota, 6 lakes, average grade F (Very Poor)

Waseca County has 6 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 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 Reeds Lake (D); the most-stressed is Clear Lake (F).

Loading map…

DNR Reports (14)

Minnesota DNR LakeFinder resources for lakes in Waseca County. Showing 12 most recent — browse all reports →

All Lakes in Waseca County

RankLakeGradeClarityMax DepthPhosphorus
1Reeds LakeD6 ft58 ft-
2St. Olaf LakeD5 ft33 ft-
3Clear LakeF2.5 ft34 ft151 µg/L
4Loon LakeF2 ft9 ft121.5 µg/L
5Elysian (Upper LakeF2 ft--
6Watkins LakeF3.2 ft--

Source: EPA National Aquatic Resource Surveys, 2026.