term,name,definition,category,provenance,provenance_uri,note stormSewer,Storm sewer,"An underground conduit created to convey storm drainage into a stream channel or reservoir. If the sewer also conveys liquid waste products, then the ""combined sewer"" secondary site type should be used.",Water Infrastructure Sites,Adapted from USGS Site Types.,,http://wdr.water.usgs.gov/nwisgmap/help/sitetype.html