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Explore Long Island's Rivers & Streams!

The River Revival Project Map identifies all of the more than 125 rivers and streams in Nassau and Suffolk County. It identifies where migratory fish have access and where they don't, where river herring runs exists, and where reconnectivity projects are complete, planned or proposed. 

The mapping project is a collaborative effort between Seatuck, the Peconic Estuary Program and the Long Island Sound Study.

How to use the map:

  • Zoom in and scroll around the island to explore rivers and streams near you. Click on waterways or impoundments for more information.
  • Green sections are accessible to migratory fish
  • Red sections are inaccessible to migratory fish because of dams or other barriers
  • Fish icons identify tributaries where river herring runs are known to exist
  • Stars identify existing, planned or proposed connectivity projects - click on them to learn more.
  • Purple stars identify priority projects outlined in Seatuck's Diadromous Fish Restoration Strategy.
  • Want to see more map detail? Click on the "Basemap" tab on the top left navigaton bar for the gallery of options.

Click here to explore the River Revival Map

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