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National Waterways-3-Feature

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National Waterways: 
National Waterway-3
Archives: 
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Features

Date of declaration  February, 1993
NW-3 consists of

West coast canal (Kottapuram - Kollam)

168 km

Udyogmandal canal (Kochi Pathalam bridge)

23 km

Champakara canal  (Kochi - Ambalamugal) 

14 km 
Total length

205 km
Sea opening- 4 nos

Munambam, Kochi, Kayamkulam and Neendakara
Tidal influence

About 0.70 m to 1.00 m  rise during high tide
Obstacles

Lock gates at Thanneermukkom, and Thrikunnapuzha
Narrow portions 

Alappuzha  Kollam stretch