Manchester Hydrological Appraisal & Flood Corridors
Environment Agency RoFSW Catchments: River Irwell, River Mersey & River Medlock Catchment
High-density urban drainage corridor. Low-lying zones along the Irwell Basin and River Medlock feature Environment Agency statutory defences. Surface water runoff (RoFSW) is the primary urban flood consideration across high-density Victorian terraces.