This work has yielded a comprehensive study on the runoff characteristics as well as the sediments from nine different locations of Guwahati, India. The study tries to give a thorough understanding of the sediment-runoff interactions and shows which are the most mobile metals in the runoff sediments of the city. A detailed speciation study of the trace metals was carried out and it was found that the metals in the sediments were bound to different chemical fractions. Cd was the most predominant in the carbonate-bound fraction, while Co and Cu showed predominant presence in the fraction bound...