Maryland DNR is proud to present the StreamHealth interactive web site. Learn more about the Maryland Biological Stream Survey, receive an overview on the health of Maryland's waters, and check out a map that contains an incredible amount of data. This collaboration between DNR, the Department of the Environment, and the Governor's office is a valuable teaching resource for all the citizens of Maryland.

Maryland StreamHealth Website

Because the Monitoring and Non-Tidal Assessment Division works all over the state, maps are a good tool to illustrate the data we collect. A variety of projects use maps to plan out sampling areas. Choose a map from the drop down to display it. Clicking a static map will open a larger version. Interactive maps may take longer to load, so consider your connection speed when choosing one to view.

Upcoming Events

  • 2015 MBSS Training
    Learn More
  • 2015 Nutrient and Sediment Monitoring Training
    Irvine Nature Center, May 13, 2015
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Species Spotlight

  • Zebra Mussel

Zebra Mussels

Zebra Mussels (Dreissena polymorpha) are harmful aquatic invasives that have recently expanded their range to the upper Chesapeake Bay.

Learn more in this informative Fact Sheet

Species Spotlight Archives