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For information on Lakes in Wisconsin, contact:
Wisconsin DNR Lakes
Division of Water
Bureau of Water Quality

Island Lake - Deep Hole (T47n R01e S25)

Annual Reports

The annual report displays Secchi, Chemistry and Temperature/D.O. profiles (where applicable) for a year.
2023 | 2022 | 2021 | 2020 | 2019 | 2001 | 2000 | 1999 | 1998 | 1997



Narrative Report

Summarizes Secchi and Chemistry results for the most recent monitoring season. 2023 | 2022 | 2021 | 2020 | 2019 | 2001 | 2000 | 1999 | 1998 | 1997

Secchi Graph

Shows average summer (July-August) Secchi readings by year.
Secchi Graph

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

Data Download

Download Secchi, Total Phosphorus, Chlorophyll, Temperature and D.O. data all years (where available).
Data Download