Banasura Sagar Dam
Dam in Wayanad, Kerala / From Wikipedia, the free encyclopedia
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Banasura Sagar Dam, which impounds the Karamanathodu tributary of the Kabini River, is part of the Indian Banasurasagar Project consisting of a dam and a canal project started in 1979.[1] The goal of the project is to support the Kakkayam Hydro electric power project and satisfy the demand for irrigation and drinking water in a region known to have water shortages in seasonal dry periods. The dam is also known as Kuttiyadi Augmentation Main Earthen Dam. The dam has a height of 38.5 metres (126 ft) and length of 685 metres (2,247 ft).
Banasura Sagar Dam | |
---|---|
Country | India |
Location | Wayanad, Kerala |
Coordinates | 11°40′12″N 75°57′28″E |
Purpose | Multi-purpose |
Status | Operational |
Opening date | 2004 |
Owner(s) | Kerala State Electricity Board |
Dam and spillways | |
Impounds | Tributary of the Kabini River |
Height (foundation) | 38.5 m (126 ft) |
Length | 685.0 m (2,247 ft) |
Spillways | Nil |
Reservoir | |
Creates | Banasurasagar Reservoir |
Total capacity | 209,250,000 m3 (169,642 acre⋅ft) |
Catchment area | 61.44 km2 (24 sq mi) |
Normal elevation | 775.60 m (2,545 ft) |
Power Station | |
Installed capacity | 231.75 MW |
In the dam's reservoir there is a set of islands that were formed when the reservoir submerged the surrounding areas.[2] The islands with the Banasura hills are in the background view.[3] It is the largest earth dam in India and the second largest of its kind in Asia. The dam is made up of massive stacks of stones and boulders.[4]
The Kuttiyadi Augmentation Scheme consists of a main dam known as Banasurasagar Dam, an earth fill dam and a concrete gravity spillway dam and six saddle dams namely, a) Kosani ( Earth fill dam) 13.8 m high b) Near Kottagiri ( Earth fill dam) 11.0 m high c) Kottagiri ( Earth fill dam) 14.5 m high d) Kuttiyadi ( Concrete dam) 16.5 m high e) Nayanmoola ( Earth fill dam) 3.5 m high f) Manjoora ( Earth fill dam) 4.0 m high. All the dams, except Kuttiady saddle, are earth fill dams. The Kuttiyadi saddle dam is a concrete dam. The spillway is located adjacent to the main dam at the right bank of the original river course. The water spread area at FRL / MWL is 12.77 km2. The catchment area of Banasurasagar Dam is 61.44 km2. [5]