Watersheds Delaware River Watershed

Dauphin and Sydenham car crash, Jan. 17, 1978

Pen and ink drawing of the proposed Delaware Seventh Street Sewer

Plan and profile of proposed Delaware Seventh St. Sewer, 1850

Exploring the Lenapehoking Watershed on Native American Heritage Day

Black-and-white line graph showing two jagged lines on a grid

Diagram Showing Decreased Amount of Dissolved Oxygen in Delaware River, 1913

Black-and-white image of a body of water with trees and shoreline in the far distance

Delaware River at Arch Street from the New Jersey side, 1914

Black-and-white image showing sewer outlet, retaining walls and body of water

Cohocksink Sewer System outlet at Laurel Street

Black-and-white image of a table with numbers in columns

Bacteria in Delaware River, Torresdale Filters, 1913

Water, Water Everywhere – Philadelphia Record, 1937-03-14

Arch Street Ferry, Philadelphia

The City and Port of Philadelphia on the River Delaware from Kensington, 1800

Map of the County of Philadelphia from Actual Survey, 1843

Philadelphia the Manufacturing and Industrial Capital map, 1906