Watersheds Delaware River Watershed

Delaware and Kensington Works (1851-1890)

Frankford Pumping Station (1877)

The Water Supply Problem of Philadelphia, 1899

Native American Heritage Day

Black-and-white photograph depicts a large brick sewer tube lying on a barren landscape

Streams, islands, and ferries of early Philadelphia

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