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Delaware Watersheds

Delaware is a beautiful low-lying state full of valuable natural resources. At its highest point, less than 450 feet above sea level, the state sits on a level plan. The northern county, New Castle, is associated with the Appalachian Piedmont; undulating with variant rolling landscapes. As you move south, the state transitions quickly, following the Atlantic Coastal Plan. This is a relatively flat area with sandy and saturated soils. Along the western edge of the state is a broad flat of about 75 to 80 feet in altitude, which creates a divide between two major watersheds. The two major watersheds are the Chesapeake Bay in the west and the Delaware River to the east. The Christina River and the Brandywine Creek are the foremost systems that drain into the Delaware. The Delaware Bay has many sandy beaches, shallow lagoons and is marshy in large areas. The Chesapeake Bay is a large watershed that extends from Virginia at it southern end, and New York to the north. Delaware has numerous streams, rivers and watersheds.

Click on the links below to learn more about Delaware's watersheds. This information is being provided by Delaware's Department of Natural Resources and Environmental Control (DNREC). 

Chesapeake Bay

Delaware Bay

Inland Bays

Piedmont Bay

NEW! 2016 Chesapeake Bay Progress Report (September 2016) - A new progress report details the investment by farmers and forest landowners to improve the health of the Chesapeake Bay watershed through voluntary conservation. Click here to learn more about the new report along with additional state-specific reports in the Bay Watershed.