AIS IN PA WATERSHEDS

A watershed is the area of land that drains into a waterway. Every spot of land in the world belongs to a watershed. The four major watersheds in Pennsylvania are the Lake Erie, Ohio, Chesapeake Bay, and Delaware River watersheds. AIS can use the tributaries in a watershed as a highway, easily spreading upstream and downstream.

Click on a watershed near you to find out more about invasive threats or view a large map.

Quick Links to AIS in Your Watershed

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