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Nature
Plans and maps of the Pennypack Creek Watershed in Philadelphia
MEET YOUR ENEMY: THE RAT
Requiem for a stream: Adams Run in Oak Lane
Glossary of Drainage Terms
The Water and Drainage History of Philadelphia
The Water and Drainage History of Philadelphia, Part 6
The Water and Drainage History of Philadelphia, Part 5
The Water and Drainage History of Philadelphia, Part 4
The Water and Drainage History of Philadelphia, Part 3
The Water and Drainage History of Philadelphia, Part 2
Streams, islands, and ferries of early Philadelphia
Flashback Friday … the 13th!