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Hongfeng Reservoir


  Hongfeng Reservoir is the Tier I waterpower project of the Maotiaohe River Chain Power Stations. The drainage area under control of the dam site is 1, 596km2. It is of comprehensive benefits of irrigation, supplying water for industrial and living purpose, aquiculture, etc. The project was launched in 1958, and the sluice gate was put down for water storage in November 1959. The first machine set was put into operation in May 1960 and the project was completed at the end of the same year. It is now managed by Hongfeng General Power Plant which is under supervision of Guizhou Provincial Administration of Power Industry. 

  Originally 52.5m at the highest, the dam was the wood sloping rock fill dam. Inside the bank-type plant building were two units of original machine units, each of 10,000kw. The designed average annual power generation was 68.9 million Kwh, and the energy index check result was 54.7 million Kwh in 1989.

  The modification of 2 and 1 machine sets were completed respectively in July 1991 and 1993, and the capacity of either machine set was expanded to 12,000kw, namely the installed gross capacity reached 24,000kw.

  The designed standard for flood control of the Reservoir was originally for resisting flood once in a hundred years with a calibrated water level against flood once in a thousand years. 2-hole breast wall overflow spillway was built. The designed and calibrated flood water levels were respectively 1,240m and1,240.7m. The total reservoir capacity was 642 million m3.

  In 1978, flood-resisting reinforcement was designed based on the criteria of resisting flood once in a hundred years and calibrated water level against flood once in ten thousand years in accordance with the results of review conducted by Guiyang Surveying and Designing Institute, Ministry of Waterpower. The 2-hole overflow spillway was expanded and the emptying hole modified so that the total holes of spillway reached 4. The maximum dam at present is 54.28m high.

  The designed and calibrated flood water levels validated at the beginning of 1992 were respectively1,239.97m and 1,242.58m, and the reservoir gross capacity became 752.88 million m3.