Grand Portage Lake NE basin Deep Hole
The annual report displays Secchi, Chemistry and Temperature/D.O. profiles (where applicable) for a year.
Summarizes Secchi and Chemistry results for the most recent monitoring season.
Shows average summer (July-August) Secchi readings by year.
Trophic State Index Graph
Displays average summer (July-August) Trophic State Index (TSI) values for Secchi, Chlorophyll a and Total Phosphorus by year.
Trophic State Index (TSI) Graph
Download Secchi, Total Phosphorus, Chlorophyll, Temperature and D.O. data all years (where available).