Many kinds of pollutants such as suspended solid, oil and grease and heavy metals were enriched in urban road runoff, they can significantly degrade quality of the receiving water and affect hydro-ecosystem. Road runoff water quality was investigated in a Many kinds of pollutants such as suspended solid, oil and grease and heavy metals were enriched in urban road runoff, they can significantly degrade quality of the receiving water and affect hydro-ecosystem. Road runoff water quality was investigated in a