Trust Fund
Maryland Rivers and Streams


From the Mountains to the Bay

Maryland's freshwater streams are unique in that they run to the largest estuary in the United States. The fingers of the Chesapeake Bay reach every corner of the state, from the Appalachians to the Eastern Shore. In turn, the health of our freshwater resources directly influences the health of the Bay. Monitoring these resources is essential in determining what we can do to preserve and protect not only the Bay, but also the waters in our backyard. Our streams provide recreation opportunities such as canoeing and fishing, grow our crops, feed our reservoirs, and provide valuable habitat for wildlife.

The Monitoring and Non-Tidal Assessment Division (MANTA)

This section of the Department of Natural Resources website contains scientific information about the non-tidal freshwater streams and rivers of Maryland, DNR monitoring programs, and volunteering opportunities with the Stream Waders. You can request data collected from the Maryland Biological Stream Survey, browse publications and reports from other projects, and view agendas for upcoming talks and meetings.

Round Four of MBSS Statewide Sampling

Starting in 2014, the MBSS will be conducting sampling throughout the state to analyze stream conditions. To view more information, check out this link.

MBSS Registry of Certifications

This page lists those applicants certified in MBSS protocols. To view the list and more information, check out this link.

Chesapeake and Atlantic Coastal Bays Trust Fund

If you are looking for more information about projects involved with the Trust Fund, check out this link.

Maryland Stream

Upcoming Events

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

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Maryland Stream Waders

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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