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Dalgolla Oya is impounded by the roller-compacted concrete Puhulpola Dam (PD), which is a gravity dam measuring 175 m (574 ft) and 45 m (148 ft) in length and height, respectively. The damming of this river creates the Puhulpola Reservoir (PR), which has a gross storage of 634,826 m 3 (22,418,700 cu ft).
The rebuilt upper reservoir of the Taum Sauk plant, nearing completion in this photo, is the largest RCC dam in North America. [1]Roller-compacted concrete (RCC) or rolled concrete (rollcrete) is a special blend of concrete that has essentially the same ingredients as conventional concrete but in different ratios, and increasingly with partial substitution of fly ash for portland cement. [2]
The Victoria Dam on 15 April 2011, three days after its 26th anniversary of opening Randenigala Dam in 2013 Upstream view of the Kotmale Dam Open spillways of the Rajanganaya Dam Irrigation dams with a length and height of more than 100 m (330 ft) and 10 m (33 ft) are listed, including all the state-run hydroelectric power stations.
The category lists dams constructed primarily with roller-compacted concrete (RCC). They include arch and gravity dams currently proposed, under construction or completed. Contents
On December 14, 2005, a catastrophic failure in the upper reservoir dam put the plant out of operation until it was rebuilt, recertified, and reopened on April 21, 2010. [10] The new upper reservoir dam, rebuilt from the ground up, is the largest roller-compacted concrete dam in North America. [11]
The Rajanganaya Dam (sometimes called Rajangana) is an irrigation dam built across the Kala Oya river, at Rajanganaya, bordering the North Western and North Central provinces of Sri Lanka. The main concrete dam measures approximately 350 m (1,150 ft) and creates the Rajanganaya Reservoir, which has a catchment area of 76,863.60 hectares ...
Both reservoirs will be formed by concrete gravity dams using roller-compacted concrete. Each will have an overflow spillway at the center of their center. The upper reservoir's dam will be 75.5 m (248 ft) tall and 375 m (1,230 ft) long while the lower reservoir dam will be 98 m (322 ft) high and 294 m (965 ft) in length.
The dam creates the Kukule Ganga Reservoir, which has a capacity and catchment area of 1,630,000 m 3 (58,000,000 cu ft) and 312 km 2 (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.