DOI: 10.36347/sjet

Pages: 49-54

A study of the surface water of Damodar River has been made during the monsoon season (rainy). A remarkable change in physical – chemical qualities has been noticed. A large surface wash out and run off which enhance the value of chemical oxygen demand in Damoder river water in mansoon season. The predominating suspended particulates matters which enhanced the turbidity and it was removed some extent by sedimentation process within 1 hour. The amounts of clay types of particles are less than the amount of silks and sands. Some fraction of resident turbidity, mostly due to ultra clay and colloidal type of particles which cannot be removed easily by simple sedimentation process.