Chimoni Dam was constructed in Chimonipuzha, a tributary of Karuvannur River in Thrissur District. The project is proposed to irrigate a gross area under crop of 35700 hectares. Besides the Irrigation benefit the project also ensures protection of 5600 hectares of land in the Vallivattom- Chettuva area from saline intrusion. The project also afford benefits by way of moderating floods in Karuvannur Basin.

The Chimoni dam and the reservoir is situated 38.00 Km east of Thrissur. Nearest Railway Station Puthukkad is 29 Km away from Chimoni Dam. The project consists of a dam across Chimoni River, a tributary of Karuvannur River, at Echippara in Thrissur district to irrigate 13000 Hectare of Paddy fields and to make possible two crops and single crop in Kole lands. As there is no canal system in this project, the regulated flow from the reservoir is let down into the river and is diverted to fields by means of Regulators constructed at various points. The Storage capacity of the reservoir is 179.00 Mm3 and the water spread area is 10.10 Km2.The project area lies between latitude 10°20’ &10°35’N and longitude 76°06’ & 76°30’E.

This project is completed in the year 1996 and it is constructed as Masonry and earth dam. The length of Masonry dam is 495m and the length of Earth dam is 686.50m. By commissioning of this project, 11000 hectares of paddy fields in Kole lands get water for Puncha and 6200 hectares of Kole fields get additional Mundakan crop besides the 5400 hectares of paddy fields in Chettuvai, Vallivattom, and Brahmakulam area. Flood control is an added advantage.