1. A place where a stream, pipe, or sewer discharges into a larger body of water or drainage system.
Usage: Usually plural or used in singular form; common in civil engineering and environmental contexts
2. The outlet or opening through which water or other material flows out.
Usage: Technical term used in hydrology and infrastructure management

Examples

• The city installed new outfalls to manage stormwater runoff more effectively.
• Engineers inspected the river outfalls to check for pollution.
• The sewage treatment plant has multiple outfalls along the coast.
• Sediment accumulated near the outfalls of the drainage system.
• Environmental regulations now require monitoring of all industrial outfalls.
• The outfalls discharge treated water back into the natural waterway.