Pavement and Other Hardened Surfaces in the Bay Watershed

This aerial image (below) shows the locations of roads, roofs, parking lots, and other developed surfaces in the Chesapeake Bay watershed that rain cannot penetrate.

Researchers have concluded that when two to 10 percent of a stream or river's drainage area is covered in hardened surfaces, fish and amphibians begin to disappear.

There are local streams in the Bay region whose aquatic life is at risk because their watersheds are at least four to nine percent covered. See three examples.

For more ideas, see "12 Things You Can Do to Clean Up Your Rivers, Streams, and the Chesapeake Bay."

Share Your Clean Water Story

What does the Bay, its rivers and streams mean to you? What impact have the Bay and its local waters had on your life? We'd like to know.

Share Your Story

Save the Bay

Founded in 1967, the Chesapeake Bay Foundation (CBF) is the largest independent conservation organization dedicated solely to saving the Bay.

Save the Bay