Session 3: River and Drainage System in CMA

Chennai Metropolitan Area
• Chennai Metropolitan Area (CMA) covers 1189 Sq. Km.
Present population about 75 Lakhs
Projected to 98 Lakhs in 2011
• Chennai City covers 176 Sq. Km. having Terrain slope varying from 1:5000 to 1:10,000
• The City is drained by 2 rivers besides a number of major & minor drains through
Buckingham Canal into Sea via Ennore Creek, Cooum mouth, Adyar mouth and
Kovalam Creek.
• Major Flood Events in Chennai City experienced during 1943, 1976, 1985,1996 &
2005