Guxian Dam

The Guxian Dam is a concrete gravity dam on the Luo River, a tributary of the Yellow River, in Luoning County, Henan Province, China. The primary purpose of the dam is flood control but it also generates hydroelectricity and provides water for irrigation. The 125 m (410 ft) tall dam withholds a reservoir of 1,175,000,000 m³ (952,588 acre⋅ft) and provides 848,000,000 m³ (687,485 acre⋅ft) in flood storage. The dam's power station contains three 20 MW Francis turbine-generators for a total installed capacity of 60 MW. Construction on the dam began in 1958 but was suspended several times afterwards. It recommenced in 1978 and the reservoir began to fill in 1991. The dam's generators were commissioned in 1992 and the project complete in 1993. The dam's spillway is controlled by five tainter gates and has a maximum discharge capacity of 11,436 m³/s (403,859 cu ft/s). Flip buckets are used at the spillway base to dissipate water. On the right side of the spillway there are two intermediate orifice openings controlled by hydraulic press-operated radial gates. Two bottom outlets are set on the spillway's left side, also controlled by hydraulic press-operated radial gates. To the left of the bottom outlets is the power station.[1][2]

Guxian Dam
Location of Guxian Dam in China
Country	China
Location	Luoning County
Coordinates	34°14′24″N 111°16′38″E
Construction began	1978
Opening date	1993
Dam and spillways
Type of dam	Concrete gravity
Height	125 m (410 ft)
Length	315 m (1,033 ft)
Elevation at crest	553 m (1,814 ft)
Width (crest)	9 m (30 ft)
Spillway type	5 x tainter gate
Reservoir
Total capacity	1,175,000,000 m3 (952,588 acre⋅ft)
Catchment area	5,370 km2 (2,073 sq mi)
Power Station
Commission date	1992
Turbines	3 x 20 MW Francis-type
Installed capacity	60 MW