Big Eau Pleine Reservoir

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 76 (Hypereutrophic) and was determined using Secchi data. For a Reservoir lake, this is considered Poor.

Big Eau Pleine Reservoir has been monitored by volunteers since 2006. Volunteers monitor water clarity with a black and white Secchi disk. Volunteers are the source of the majority of Wisconsin's lake water quality data, and their dedication is greatly appreciated. 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
Big Eau Pleine Flowage - Near Shore Off County Park Boat Landing	373446	Map	2006	Details
Big Eau Pleine Lake - Deep Hole	373123	Map	2024	Details
Big Eau Pleine Reservoir - Far Dam	373425	Map	1994	Details
Big Eau Pleine Reservoir - Headwater above Dam	373331	Map	2019	Details
Big Eau Pleine Reservoir - Lower	373135	Map	2022	Details
Big Eau Pleine Reservoir - Lower Segment Above Dam	373418	Map	1992	Details
Big Eau Pleine Reservoir - Main Channel River Mile 3	10007758	Map	2022	Details
Big Eau Pleine Reservoir - Middle	373136	Map	2022	Details
Big Eau Pleine Reservoir - Middle Segment Cty Park Landing Near Cth C	373417	Map	2022	Details
Big Eau Pleine Reservoir - Near Dam	373424	Map	1994	Details
Big Eau Pleine Reservoir - Near Shore Sample Just Of Lisa'S Landing	373450	Map	2007	Details
Big Eau Pleine Reservoir - Upper	373137	Map	2022	Details
Big Eau Pleine Reservoir - Upper Segment N Side 1st Bay Above Hwy S Bridge	373419	Map	2023	Details
Big Eau Pleine Resevoir - Big Eau Pleine Resevoir	128	Map	1976	Details
Big Eau Pleine Southeast Point	10020948	Map	2023	Details