Stormwater runoff poses a great threat to local water quality and aquatic ecosystem in rapid urbanizing areas.Six watersheds in the city of Shenzhen were selected for study on characteristics of stormwater runoff in four rainfall events.Six indicators of water quality(CODCr
NH3-N
TN
TP
SS and BOD5) were analyzed for the characteristic of water quality and the first flush phenomenon.It could be concluded from the water quality analysis that SS
CODCr and BOD5 were relatively significant in nonpoint source pol...