Filters
Check a group to select every species in it, or expand a group for individual species.
Must have ALL selected types (AND logic).
Uses the current official DNR infested-waters release. Choose a species or
"No current official listing"; lakes with unknown identity/coverage are excluded.
for clean lakes. Based on the DNR infested waters list.
Check a group to select every species in it, or expand a group for individual species.
Select one or more clarity categories to include.
Trend of annual secchi means from DNR surveys plus MPCA and citizen monitoring.
Requires readings from at least 3 years spanning 5+ years.
Official assessment classification from the state integrated report.
A missing assessment is not an assessed-not-impaired result.
Loading lake data.
Interactive map of Minnesota lakes. Lake markers are buttons: activate one to open that lake's details. Numbered circles are clusters of nearby lakes: activate one to zoom in or, when fully zoomed, to separate overlapping markers. Use the arrow keys to pan and plus and minus to zoom. The List presentation offers the same results as text cards.