The Hongkou Dam is a concrete gravity dam on the Huotong River located 32 km (20 mi) northwest of Ningde

Ningde

Ningde , also known as Mindong , is a prefecture-level city located along the northeastern coast of Fujian province, China. It borders Fuzhou to the south, Wenzhou City and Zhejiang province to the north, and Nanping City to the west.-Administration:...

 in Fujian Province, China. Constructed between 2003 and 2008, the dam serves to produce hydroelectricity

Hydroelectricity

Hydroelectricity is the term referring to electricity generated by hydropower; the production of electrical power through the use of the gravitational force of falling or flowing water. It is the most widely used form of renewable energy...

. Its power station consists of two 100 MW Francis turbine

Francis turbine

The Francis turbine is a type of water turbine that was developed by James B. Francis in Lowell, Massachusetts. It is an inward-flow reaction turbine that combines radial and axial flow concepts....

-generators for an installed capacity of 200 MW. The 130 m (427 ft) tall dam was constructed with roller-compacted concrete

Roller-compacted concrete

Roller-compacted concrete or rolled concrete 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. RCC is a mix of cement/fly ash, water, sand, aggregate...

 and withholds a reservoir

Reservoir

A reservoir , artificial lake or dam is used to store water.Reservoirs may be created in river valleys by the construction of a dam or may be built by excavation in the ground or by conventional construction techniques such as brickwork or cast concrete.The term reservoir may also be used to...

with a storage capacity of 449700000 cubic metre.