stormwater

the runoff due to rainfall from roofed areas, termed roofwater, from paved and unpaved areas, termed surface water and from water bearing ground, termed subsoil water

naturally occurring water that results from rainfall on or around the site, or water flowing onto the site

water accumulated or discharged as a result of precipitation and run-off; including roofwater, surface water from paved or unpaved areas, or subsoil water from water-bearing ground
See also: groundwater; surface water