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Kukule River

The Kukule is a river in Sabaragamuwa Province in southwestern Sri Lanka. The Kukule Ganga Dam and reservoir lies along the river

The Kukule Ganga Dam is a 110 m (360 ft) gravity dam built across the Kukule River in the Sabaragamuwa Province of Sri Lanka. The run-of-river-type dam feeds an underground hydroelectric power station located approximately 5 kilometres (3.1 mi) away, via tunnel.

Dam & Reservoir
The gravity dam is built across the Kukule River, which is a major mid-basin tributary of the Kalu River. The dam measures 110 m (361 ft) and 20 m (66 ft) in length and height respectively, with four spillways, and a sand trap on the left-bank.[1] Each spillway gate measures 9.3 m (31 ft) high and 12 m (39 ft) wide, and uses the same automated technology as the Victoria Dam.[3]
The dam creates the Kukule Ganga Reservoir, which has a capacity and catchment area of 1,630,000 m3 (58,000,000 cu ft) and 312 km2 (120 sq mi) respectively. After passing through the dam and sand traps, water from the reservoir is fed into a 5.71 km (3.55 mi) long tunnel, which leads to the underground power station. The tunnel from the dam to the power station, with an internal diameter of 10.5–4.8 m (34.4–15.7 ft), creates a gross head of 185 m (607 ft).
Power Station
Water from the tunnel is fed into the 80 MW underground power station, consisting of two 40 MW units. This capacity was intentionally limited to 70 MW due to load issues.[4] The power station generates an average of 317 GWh annually.[2]
Two transformers step up the voltage of the power generated to 132 kV, which is then transferred to the national grid at the Mathugama Substation, via a 27 kilometres (17 mi) long 132 kV double-circuit transmission line.

It's a really grate experience to visit there and enjoy the beauty of this beautiful river. Sri lanka is one of the gift of nature which has tons of beautiful places to visit. And remember to protect those gifts of nature for the future generations too.

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