Ash Limés Castellana

Ash Limés Castellana

MLArch Student Landscape Architecture

decorative image for the presentation

Tidal commons:

Designing for people and the river along the tidal Schuylkill River Trail

Forgotten Bottom neighborhood, Philadelphia

Through the design of living shorelines and constructed wetlands structured around freshwater mussel habitat, Tidal Commons demonstrates how the Schuylkill River Trail can function as regenerative infrastructure that supports aquatic ecosystems, deepens community connection, and strengthens resilience to climate change.

The 8-mile freshwater tidal portion of the Schuylkill River extends from Fairmount Dam to its confluence with the Delaware River. The Schuylkill is a living riparian corridor linking terrestrial and riparian systems, and the resources and connectivity it provides for people and wildlife have shaped Philadelphia’s development. During the Industrial Revolution, the tidal Schuylkill and the wetlands along its banks were constricted, filled, and channelized to prioritize the production and transport of goods by port, rail, and road. Industry continues to border approximately 70% of the tidal river. Although public access is gradually being restored through the recreational Schuylkill River Trail, the corridor remains narrow and vulnerable to rising waters and intensifying flood events; meanwhile, ecological systems are slow to recover.

This project reimagines the trail as an ecological and social corridor by reclaiming industrial land and expanding the riparian edge. Through the design of living shorelines and constructed wetlands structured around freshwater mussel habitat, Tidal Commons demonstrates how the Schuylkill River Trail can function as regenerative infrastructure that supports aquatic ecosystems, deepens community connection to a dynamic river, and strengthens resilience to climate change. By widening the river corridor and integrating mussel-centered wetlands with accessible public space, the Schuylkill River and its trail become a shared system where ecological restoration, community, and long-term stewardship are mutually reinforced.