Premodifier: storm water
Head noun: runoff

Same concepts
http://dbpedia.org/resource/Surface_runoff

Narrower concepts

labelprovenanceconfidence
rain gardenisap:3988062570.754579
underground cisternisap:2739183890.706225
parking lotisap:2132629170.623152
gradingisap:2759588650.400115
streetisap:3907750390.208351