Aluva river is actually the part of the Periyar river flowing through the Aluva town of Ernakulam district in Kerala. The flow of the water is very strong during the heavy monsoon season and the water can rise up to about 6 meters (guess). When the water from the mountains is very less the backwaters from the Arabian Sea flows in.
The main attraction here is the Shiva Temple that get immersed in flood waters during the monsoon which is similar to the phenomenon of the Kottiyur temple in Kannur district. There are a lot of space around this temple for people to do activities including so many temple rituals.
Bathing and swimming in the river is an awesome experience. By morning the cool atmosphere comes up and the warm waters have special effects on our body. If you wish to swim, you are never alone because there are so many other people as well who come here to swim and to take bath everyday.
If you get a chance do visit the Aluva River.