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Lake Du Bay
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 66 (Eutrophic) and was determined using Secchi data. For a Reservoir lake, this is considered Fair.
Lake Du Bay was monitored by volunteers between 1993 and 2022. 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 |
|---|
| Lake DuBay - N Marietta Ln | 10051991 | Map | 2022 | Details |
| Lake Dubay - Basin Above County DB | 503200 | Map | 2009 | Details |
| Lake Dubay - Basin Above Hwy 34 | 503201 | Map | 2008 | Details |
| Lake Dubay - Deep Area Across From Little Eau Pleine River Inle | 503164 | Map | 2003 | Details |
| Lake Dubay - Deep Area Upstream Sth 34 Off Seagull Landing | 373445 | Map | 2015 | Details |
| Lake Dubay - Deep Hole - Upstream Dam | 503163 | Map | 2015 | Details |
| Lake Dubay - Little Eau Claire Basin | 503203 | Map | 2010 | Details |
| Lake Dubay - Mouth Of Little Eau Claire Bay | 503204 | Map | 2009 | Details |
| Lake Dubay - T26n R7e S20 | 119 | Map | 1976 | Details |
| Wisconsin River - 2/3 Mi Ab Cmsp And P Rr Bridge | 373294 | Map | 1977 | Details |
| Wisconsin River - Above Dubay Dam - Deep Hole | 503003 | Map | 2018 | Details |
| Wisconsin River - Dubay Dam | 503170 | Map | 2000 | Details |
| Wisconsin River - Near Knowlton Cemetery | 373295 | Map | 1977 | Details |
| Wisconsin River at South End Of Big Island | 373293 | Map | 1977 | Details |