The Chesapeake Bay watershed includes almost two-thirds of Pennsylvania. Mainly via the Susquehanna River, the state supplies fully half of the Bay’s freshwater flow and the largest share of its agricultural pollution.
Susquehanna River just south of Three Mile Island, where the Conewago Creek drains into the river. Mud plumes are eroded sediment washed into the river after a heavy deluge of rain.
Credit: Jennifer Fetter
A satellite image of the Chesapeake Bay shows the Susquehanna River flowing in from the northwest. Pennsylvania waterways supply half of the Bay's freshwater flow, and the largest share of its agriculture pollution.
Credit: Alamy
The Bay watershed, home to 18 million people, spreads out across six states and the District of Columbia.
Credit: Natural Resources Conservation Service/USDA