Thoonakkadavu Dam is located on the Thoonakkadavu River, a tributary of the Parambikulam River, at Thoonakkadavu in the Parambikulam Wildlife Sanctuary in the Muthalamada Panchayath of Palakkad District, Kerala. It is a small storage reservoir that is a part of the Parambikulam-Aliyar Irrigation Project.[1] The Peruvaripallam Dam is connected to the Parambikulam Dam by a canal [2][3] through a 2.5 km long underground tunnel. The Poringalkuthu reservoir gets water from catchments downstream of Parambikulam and Thunakadavu dams.[4]
An adjacent canal also flows from this river to the reservoir. Reservoir attracts fishing businesses. Tourism is also developed around the Reservoir.[5] Water from Parambikulam dam drains to Thoonakadavu by gravity and after generation of 30 mW power at Sircarpathy, it will go through a Canal to reach Thirumurthi Dam.[6]
The water stored in the dam reservoir is used mainly for agriculture. Kerala needs to get water every year from The Parambikulam-Aliyar project and Tamil Nadu will provide 7.25 TMC from the proposed project.