Long Lake

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 55 (Eutrophic) and was determined using chlorophyll data. For a Two-Story lake, this is considered Poor.

Long Lake has been monitored by volunteers since 1991. 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 Lake Grants and 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
Long Lake (T37r11ws10) - Site C	663090	Map	2023	Details
Long Lake (T38r11ws35) - Site B	663089	Map	2000	Details
Long Lake - Deep Hole/Site A	663088	Map	2023	Details
Long Lake - Near Slim Creek	663061	Map	2001	Details
Long Lake - Nr Little Mud Lk Outlet	663063	Map	2001	Details
Long Lake - Site D	663091	Map	2023	Details
Long Lake - Site E	663092	Map	2023	Details
Long Lake - Site F	663118	Map	2023	Details