Surface Water

Surface Water

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    Surface Water Integrated Monitoring System (SWIMS) Database

    Subscribe for updates about the SWIMS system The Surface Water Integrated Monitoring System (SWIMS) is a DNR system that holds chemistry (water, sediment, fish tissue) data, physical data, biological (macroinvertebrate, aquatic invasives) data…

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    Water Quality Standards Rule Updates

    The DNR is conducting rulemaking on several topics related to surface water quality standards, outlined below.

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    Pollutant Load Ratio Estimation Tool (PRESTO)

    The Pollutant Load Ratio Estimation Tool (PRESTO) is a statewide GIS-based tool that compares the average annual phosphorus loads originating from point and nonpoint sources within a watershed. The comparison provides a screening tool for…

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