Environmental Management
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Ethylene Oxide
Ethylene oxide (EtO) is a flammable, colorless gas used to make other chemicals. It is necessary for the production of a range of products, including antifreeze, textiles, plastics, detergents and adhesives. Ethylene oxide also is used to sterilize…
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Information for delegated counties
The well delegation program gives counties an opportunity to form a partnership with the DNR to protect public health and safety and enhance the potable groundwater resource.This page contains information for Wisconsin counties that are, or wish to…
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Tainter Lake/Lake Menomin Total Maximum Daily Load (TMDL)
Red Cedar River. Image courtesy of Jon H. Fuller, 2019.
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Remote Sensing: Future Directions
Future remote sensing research activities at the DNR will concentrate on an increase in Earth observation monitoring capabilities. These research activities include the optical and biogeochemical characterization of lakes across Wisconsin and the…
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Remote Sensing: Frequently Asked Questions
What is water clarity? Water clarity or Secchi disk depth is probably the most common limnological parameter measured in lakes today. The Secchi disk was invented by Father Pietro Angelo Secchi, an astronomer and scientific adviser to the Pope…
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Remote Sensing: Resources
The capabilities for the remote sensing of water quality at the DNR are tied to the availability of Landsat 7 ETM+ and Landsat 8 OLI-TIRS data through the NASA/USGS Landsat Program. This data is used for the operational satellite retrieval of water…
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Remote Sensing of Water Quality
Remote sensing presents a cost efficient complementary approach for a more comprehensive assessment of lakes across Wisconsin. The use of remote sensing for the assessment of our aquatic resources provides several advantages compared to conventional…