The Manayunk Canal was constructed as part of the larger Schuylkill River Navigation System to connect the Flat Rock and Fairmount Pools. The gates were manually operated and regular dredging was performed to maintain navigability. The Manayunk Canal ceased operations in the 1940s. With that came the removal of the lock gates and dredging was discontinued.
Today, the Manayunk Canal has no connection to the river. The canal is stagnant, which leads to algae blooms and the occasional fish kills. Sediment has accumulated upstream of the Feeder Structure further disconnecting the river and the canal, and the upstream area collects significant amounts of trash and debris.
PWD has looked for sustainable ways to reconnect the canal to the river. To be sustainable, the solution must provide for:
- Flow Control (Normal Operations and Flood Control) using manually operated gates
- Debris collection and removal
- Sediment management and removal
- Regular inspections and maintenance
PWD has identified accessibility to be the biggest key to achieving sustainability. In order to do this, PWD will construct a new diversion facility upstream to the Feeder Structure to regulate flow and manage sediment.