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Kerala backwaters

Lagoon network in Kerala, India

  • 12 min read
  • 9 chapters
A house Boat View from Vembanad Lake
Augustus Binu : flickr · CC BY-SA 3.0

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Through Kerala, Irrigation and Frog

The backwaters have a unique ecosystem: Freshwater from the rivers meets the seawater from the Arabian Sea. A barrage has been built near Thanneermukkom, so saltwater from the sea is prevented from entering deep inside, keeping the freshwater intact. Such freshwater is extensively used for irrigation purposes. Many unique species of aquatic life including crabs, frogs and mudskippers, water birds such as terns, kingfishers, darters and cormorants, and animals such as otters and turtles live in and along the backwaters. Palm trees, pandanus shrubs, various leafy plants, and bushes grow alongside the backwaters, providing a green hue to the surrounding landscape.

Hydrography

National Waterway 3 from Kollam to Kottappuram covers a distance of 205 km (127 mi) and runs almost parallel to the coastline of southern Kerala, facilitating both cargo movement and backwater tourism. Vembanad, covering an area of 2,033 km2 (785 sq mi), is Kerala's largest lake. The lake has a large network of canals that meander through the region of Kuttanad. The important rivers from north to south are the Valapattanam 110 km (68 mi), Chaliyar 169 km (105 mi), Kadalundipuzha 130 km (81 mi), Bharathappuzha 209 km (130 mi), Chalakudy 130 km (81 mi), Periyar 244 km (152 mi), Pamba 176 km (109 mi), Achankovil 128 km (80 mi), Meenachil 75 km (47 mi), and Kalladayar 121 km (75 mi). Other than these, there are 35 more small rivers and rivulets flowing down from the Ghats. Most of these rivers are navigable up to the midland region, in country craft.

Vembanad Lake is the longest backwater in Kerala, as well as the longest lake in India. The Kochi city, Kuttanad, Kumarakom, and Pathiramanal Island are located in this long backwater. The Vellayani Lake, the Pookode Lake, and the Sasthamcotta Lake are the freshwater lakes in Kerala. Sasthamcotta is the largest among them. The Kerala backwaters host three of the world’s Ramsar Convention-listed wetlands: Ashtamudi Lake, Sasthamkotta Lake, and the Vembanad-Kol wetlands are noted as being wetlands of international importance.

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