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Lake Sherwood
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 58 (Eutrophic) and was determined using chlorophyll data. For a Reservoir lake, this is considered Fair.
Lake Sherwood has been monitored by volunteers since 2003. 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. Lake Sherwood is also part of DNR's long term trend monitoring project. 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 |
|---|
| Lake Sherwood - Deep Hole Just Above Dam | 013038 | Map | 2024 | Details |
| Sherwood Lake #1 | 10021841 | Map | 2017 | Details |
| Sherwood Lake (#3) | 10028947 | Map | 2017 | Details |
| Sherwood Lake (#4) | 10028960 | Map | 2017 | Details |
| Sherwood Lake - Drain on dam (#1) | 10031428 | Map | 2011 | Details |
| Sherwood Lake - Drain on dam (#2) | 10031429 | Map | 2011 | Details |
| Sherwood Lake - Sherwood Lake | 014003 | Map | 1979 | Details |