Official name Queen Sirikit Dam Location Uttaradit Province Opening date 1974 Phone +66 55 461 136 Impound Nan River | Country Thailand Status In use Type of dam Embankment Construction began 1968 | |
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Address Pha Lueat, Tha Pla District, Uttaradit 53190, Thailand Owner Electricity Generating Authority of Thailand Similar Bhumibol Dam, Pa Sak Jolasid Dam, Wat Phra Thaen Si La At, Wat Phra Brommathat Thung Ya, Ban Pak Nai | ||
2014 sirikit dam and vicinity uttaradit thailand
The Queen Sirikit Dam is an embankment dam on the Nan River, a tributary of the Chao Phraya River, in Uttaradit Province, Thailand. It is at the southeastern edge of the Phi Pan Nam Range. The dam was built for the purpose of irrigation, flood control and hydroelectric power production. It is named after Queen Sirikit of Thailand.
Contents
Sirikit dam
Background
The Sirikit Dam among others in the Chao Phraya basin were constructed beginning in the 1950s to exploit the agricultural and hydroelectric potential of the basin. Preliminary construction on the dam began in 1968 and it was finished in 1972. The power plant and first three units were commissioned in 1974, the fourth in 1995. Previously in 1964, the Bhumibol Dam was completed on the Ping River, one of two major tributaries of the Chao Phraya including the Nan. The Bhumibol and Sirkit Dams control 22% of the Chao Phraya's annual runoff combined. Both dams also help provide for the irrigation of 1,200,000 ha (4,633 sq mi) in the wet season and 480,000 ha (1,853 sq mi) in the dry season.
Design
The dam is a 113.6 m (373 ft) high and 800 m (2,625 ft) long embankment dam that is 630 m (2,067 ft) wide at its base and 12 m (39 ft) wide at its crest. The dam withholds a reservoir of 9,510,000,000 m3 (7,709,882 acre·ft) of which 6,666,000,000 m3 (5,404,214 acre·ft) is active or "useful" storage. The reservoir has a surface area of 259 km2 (100 sq mi). The dam's spillway consists of a tunnel controlled by two radial gates, it has a capacity of 3,250 m3/s (114,773 cu ft/s). The dam's power station contains 4 x 125 MW Francis turbines for an installed capacity of 500 MW.