Lake Mohawksin

Water Quality

One measure of a lakes health is the trophic state, which relates to the amount of algae in the water. The average summer trophic state for the last 5 years was 57 (Eutrophic) and was determined using chlorophyll data. For a Impounded Flowing Water lake, this is considered Good.

Lake Mohawksin has been monitored by volunteers since 2006. Volunteers monitor water clarity with a black and white Secchi disk. Some also collect water samples, which are sent to the State Lab of Hygiene to be analyzed. Volunteers are the source of the majority of Wisconsin's lake water quality data, and their dedication is greatly appreciated. Additional monitoring has been done through projects funded in part by DNR Aquatic Invasive Species Grants. Reports and graphs featuring data collected by volunteers, DNR staff and others can be viewed below.

Water Quality Reports and Graphs

Station Name	Station ID	Map	Max Year	Reports
Lake Mohawksin - Deep Hole	353089	Map	2024	Details
Lake Mohawksin - Near Railroad Tracks	10055908	Map	2020	Details
Lake Mohawksin Site #1	10038151	Map	2012	Details
Lake Mohawksin Site #4-Island	10038152	Map	2012	Details
Lake Mohawksin Site #6	10038156	Map	2012	Details
Lake Mohawksin Site #7 - Hwy Bridge	10038157	Map	2012	Details
Mohawksin Lake - Mohawksin Lake	354004	Map	2022	Details
Somo River - Confluence With Wis R	353116	Map	1997	Details
Wisconsin River at Mt + W Rr Bridge	353054	Map	2008	Details