Frankford Creek Watershed Historical Timeline
Frankford Creek Watershed in the context of the development of Philadelphia’s sewers and sewage treatment system
Down Under III: A walk in the Dobson’s Run Storm Relief Sewer, June 15, 2010
Requiem for a stream: A brief history of Dobson’s Run
Down Under, Part 2: Beaver Creek as it appears today
Wooden Pipes in Philadelphia
Aramingo Canal, Then and Now
Still photo from a video sewer inspection, 2000
Half a Century of Clean Water: The Clean Water Act, 1972-2022
“Philadelphia Underground,” Jan. 29, 1961