It is proposed to lay 0.5 m diameter HDPE (6 kg/sq cm) water mains on east and west banks and 6" diameter HDPE (6 kg/sq cm) branch lines as shown in Drawing to serve the requirements of the proposed new developments. It is assumed that it will be possible to augment the capacity of the Dudheshwar Water Works to provide this additional supply. The population load has been estimated according to the proposed land uses and intensity of Development.
Sewerage
It is proposed to lay trunk sewers parallel to (underneath) the riverside roads on both banks - the East River Drive and the West River Drive. They will terminate at the sewage treatment facilities located near Vasna Barrage. The trunk sewers will serve both, proposed new developments on the reclaimed land and, if it is necessary, existing developments along the riverbank. The sewage load of the proposed new developments is assumed as 80% of the water supply load (excluding the water requirement for gardens and tree plantations).
Storm Water Drainage
At present a number of storm water drains flow into the river, upstream from Vasna Barrage. Many of them are also being illegally used to drain sewage directly into the river. With the retention of water in the river and reclamation of land along the river it will be necessary to: 1) ensure that no sewage flows through the storm water drains and, 2) extend the storm water drains through the reclaimed land and embankments. Separate project is taken up by Ahmedabad Municipal Corporation with support from National River Conservation Directorate, Ministry of Environment and Forest, Government of India. The project is aimed at elimination of discharge of untreated wastewater in to river. In addition to extending the storm water drains, stilling basins will also have to be provided adjacent to the embankments.
