Susquehanna Valley

The valley consists of areas that lie along the main branch of the river, which flows from Upstate New York through Pennsylvania and Maryland into the Chesapeake Bay, as well as areas that lie along the shorter West Branch in Pennsylvania.

[1] As of 2014, seventeen of the oldest covered bridges in the United States were located in the Susquehanna Valley.

[2] Historians and environmentalists at the Chesapeake Conservancy have described the Susquehanna River as the "lifeblood" of the Chesapeake Bay and also as "extension of the Susquehanna Valley that the Atlantic Ocean has steadily flooded over the last 15,000 years.

"[3] Within Pennsylvania, the Susquehanna Valley is linked inextricably with the Chesapeake Bay watershed, which extends from Virginia, West Virginia, Washington, D.C., and Maryland through Delaware, Pennsylvania and New York.

"Located in the middle of the commonwealth, about half of the land in Pennsylvania drains into it.

Susquehanna River in Bradford County, Pennsylvania
The Susquehanna Watershed incorporates all the valley sidewalls within the Susquehanna Valley, including large areas of the southern tier counties of lower New York state , the majority of central Pennsylvania 's Susquehanna Gap above and past Lancaster and York County into upper Maryland , where it meets the headwaters of the Chesapeake Bay above Aberdeen, Maryland .
Counties constituting the Susquehanna Valley region of Pennsylvania . Counties in red are those in which the Susquehanna River and West Branch physically flow, while dark red counties are part of the watershed.