Stormwater treatment pond water-quality load and concentration data at Cherokee Park, Madison, Wisconsin, 2020–24

A stormwater pond in Cherokee Park, Madison, Wisconsin was monitored to determine if changes to street cleaning operations in the contributing drainage area would influence pollution reduction efficiency. Event-based water samples were collected from the ponds inlets and outlet from September 2020 through October 2024 and analyzed for nitrogen, phosphorus, sediment and chloride. Continuous dissolved oxygen and temperature were measured at the center of the pond between May 2022 and October 2024. This data set includes paired concentration and load data for 62 events at the inlets and outlet as well as daily mean dissolved oxygen and temperature.