The low lying areas of the Vembanad Lake along its southern borders have been reclaimed by constructing barriers and dewatering the area within the barriers by pumping. The entire lake is affected by tidal action of the sea, and because of its permanent connection to the sea, the waters of the lake are always saline except during the monsoon. In order to prevent the intrusion of saline water as well as the effect of tides into the lake and the various waterways in Kuttanad bordering the lake, the construction of a bed regulator across the neck of the Vembanad Lake has been built. Presently, Vembanad Lake is largely a fresh water lake but, near Arabian Sea, the water is definitely saline.
There are many pretty places along the borders of Vembanad Lake, perpetually clothed with beautiful groves of coconut and other trees and with an endless succession of houses, churches and temples. Midway between Alleppey and Cochin (Kochi) stands on its eastern bank the sacred village of Vaikam with a famous Lord Shiva temple (Kottayam District). From here to Cochin, the backwater is of varying breadths, depths containing small patches of land here and there always adorned with coconut trees. The proximity of Alleppey to the extensive Vembanad Lake stretching up to Cochin affords immense water frontage to merchants for transport of goods. Kumarakom, on the banks of Vembanad Lake, has emerged as a favorite backwater holiday destination. The water of the lake is clean, calm and clear and sailing through it is smooth. A houseboat stay and boating in Vembanad Lake, a host to large number of migratory birds, is a unique and exhilarating experience. Nehru Trophy Boat Race competition, a popular tourist attraction and recreational locale, is also held every year in Vembanad Lake in Kuttanad region where it is called as the Punnamada Lake. In order to enjoy beach resort, a tourist should head for Kumarakom whereas to enjoy houseboat experience, Alleppey is the perfect place.
Vembanad Lake can be reached by road from Kochi (65 km)/ Thiruvanthapuram (150 km), by air (Kochi airport is 75 km away) and by train (Kottayam railway station is 16 km away). Best time to visit Vembanad Lake is from September to March.