Bowatenna Dam

The Bowatenna Dam is a 100 ft high gravity dam at Bowatenna, in Central Province of Sri Lanka. The dam was built in June 1981, and is used primarily for irrigation. A 40 MW power station is also constructed 5800 ft downstream, for hydroelectric power generation.

Reservoir and spillways
The dam creates the iconic Bowatenna Reservoir, measuring approximately 11800 ft and 10500 ft at its widest and longest latitude and longitude, respectively. The reservoir has an active capacity of 21000 acre.ft and a maximum surface elevation of 800 ft.

The dam consists of six spillways, measuring a combined width of 222 ft, or 16 ft each. The spillways combined has a maximum discharge capacity of 125000 ft3/s.

After the completion of the Moragahakanda Dam, a percentage of water from the Bowatenna Reservoir would also be transferred to the new Moragahakanda Reservoir, to be located approximately 3 mi away, via tunnel.

Power station
The power station, located 5800 ft downstream, consists of a single Fuji 40 MW unit. The power station was commissioned in June 1981.