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Chennai, Chennai district, Tamil Nadu, India (13.08017 80.28383)
Chennai is located on the south–eastern coast of India in the north–eastern part of Tamil Nadu on a flat coastal plain known as the Eastern Coastal Plains. Its average elevation is around 6.7 metres (22 ft), and its highest point is 60 m (200 ft). Chennai is 2,184 kilometres (1,357 mi) south of Delhi, 1,337 kilometres (831 mi) southeast of Mumbai, and 345 kilometres (214 mi) east of Bangalore by road. Two major rivers flow through Chennai, the Cooum River (or Koovam) through the centre and the Adyar River to the south. A third river, the Kortalaiyar, travels through the northern fringes of the city before draining into the Bay of Bengal, at Ennore. The estuary of this river is heavily polluted with effluents released by the industries in the region. Adyar and Cooum rivers are heavily polluted with effluents and waste from domestic and commercial sources, the Coumm being so heavily polluted it is regarded as the city's eyesore. A protected estuary on the Adyar forms a natural habitat for several species of birds and animals. The Buckingham Canal, 4 km (2.5 mi) inland, runs parallel to the coast, linking the two rivers. The Otteri Nullah, an east–west stream, runs through north Chennai and meets the Buckingham Canal at Basin Bridge. Several lakes of varying size are located on the western fringes of the city. Some areas of the city have the problem of excess iron content in groundwater.
Retteri Lake, Chennai Bypass, Ward 25, Zone 3 Madhavaram, Chennai, Mathavaram, Thiruvallur district, Tamil Nadu, 600110, India (13.14124 80.21205)
Coordinates: 13.13084 80.20621 13.15068 80.21516 - Minimum elevation: 2 m - Maximum elevation: 34 m - Average elevation: 11 m
Narayanapuram Lake, Pallavaram Thuraipakkam Radial Road, Kuberan Nagar, Ward 188, Zone 14 Perungudi, Chennai, Chennai district, Tamil Nadu, 600117, India (12.94930 80.20131)
Coordinates: 12.94873 80.20007 12.94979 80.20304 - Minimum elevation: -3 m - Maximum elevation: 154 m - Average elevation: 9 m
Marina Beach (மறீனா கடல்கரை), Kamarajar Promenade, Chepauk, Ward 114, Zone 9 Teynampet, Chennai, Chennai district, Tamil Nadu, 600005, India (13.05188 80.28301)
Coordinates: 13.03837 80.27976 13.06639 80.28934 - Minimum elevation: 0 m - Maximum elevation: 43 m - Average elevation: 5 m
Tholkappiar Ecological Park, Ramakrishna Nagar, Ward 173, Zone 13 Adyar, Chennai, Chennai district, Tamil Nadu, India (13.02215 80.26580)
Coordinates: 13.01874 80.26306 13.02515 80.27350 - Minimum elevation: 0 m - Maximum elevation: 44 m - Average elevation: 6 m
Kallu Kuttai Lake, Taramani Link Road, Ward 179, Zone 13 Adyar, Chennai, Chennai district, Tamil Nadu, 600002, India (12.97799 80.23583)
Coordinates: 12.97791 80.23571 12.97813 80.23593 - Minimum elevation: -3 m - Maximum elevation: 76 m - Average elevation: 6 m
Anna Nedumchalai Lake, Ramappa Road, Rajiv Nagar, Ward 186, Zone 14 Perungudi, Chennai, Chennai district, Tamil Nadu, 600096, India (12.96558 80.24026)
Coordinates: 12.96464 80.23643 12.96792 80.24126 - Minimum elevation: -3 m - Maximum elevation: 76 m - Average elevation: 5 m