Udawalawe Dam

The Udawalawe Dam is a large irrigation dam in Udawalawe, in the Southern Province of Sri Lanka. The dam consists of an embankment section and a gravity section, combining the total dam length to approximately 3.9 km (2.4 mi). The dam is also used for hydroelectric power generation, powering two 2 MW units, commissioned in April 1969 (1969-04).^[1]

Uda Walawe Dam
The dam with all four spillways open.
Country	Sri Lanka
Location	Udawalawe
Coordinates	06°26′02″N 80°51′15″E
Purpose	Irrigation, Power
Status	Operational
Dam and spillways
Type of dam	Embankment dam
Impounds	Walawe River
Length	3.9 km (2.4 mi)
Spillways	4
Spillway type	Tainter gate
Reservoir
Creates	Udawalawe Reservoir
Total capacity	267MCM
Maximum length	8.6 km (5.3 mi)
Maximum width	7 km (4.3 mi)
Udawalawe Power Station
Coordinates	06°25′55″N 80°51′02″E
Operator(s)	CEB
Commission date	April 1969 (1969-04)
Type	Conventional
Turbines	3 × 2 MW
Installed capacity	6 MW

The water level of the reservoir is controlled by the five tainter gate spillways located at the eastern end of the dam, with two additional spillways located towards the centre of the dam. The reservoir measures approximately 8.6 km (5.3 mi) in length, with a maximum perpendicular width of 7 km (4.3 mi).^{[citation needed]}

The four tainter gate spillways.

Road over the larger embankment dam.

See also

• Sri Lanka portal
• Water portal
• Renewable energy portal

• Electricity in Sri Lanka
• List of dams and reservoirs in Sri Lanka
• List of power stations in Sri Lanka