| Liuxihe Dam | |
| Location Map: | China |
| Coordinates: | 23.7497°N 113.7694°W |
| Country: | China |
| Location: | Conghua, Guangzhou, Guangdong Province |
| Status: | In use |
| Construction Began: | 1956 |
| Opening: | 1958 |
| Dam Type: | Arch |
| Dam Length: | 255.5m (838.3feet) |
| Dam Height: | 78m (256feet) |
| Dam Width Crest: | 2m (07feet) |
| Dam Width Base: | 22m (72feet) |
| Dam Volume: | 130000m2 |
| Dam Crosses: | Liuxi River |
| Spillway Count: | Two |
| Spillway Type: | Seven controlled surface openings and discharge tunnel |
| Spillway Capacity: | 987m3/s Tunnel: 1070m3/s |
| Res Name: | Liuxihe Reservoir |
| Res Capacity Total: | 325000000m2 |
| Res Catchment: | 539km2 |
| Plant Turbines: | 4 x 12 MW |
| Plant Capacity: | 48 MW |
| Plant Annual Gen: | 147 million kWh |
The Liuxihe Dam is an arch dam on the Liuxi River in Conghua District, Guangzhou, Guangdong Province, China. The main purpose of the project is hydroelectric power generation with additional purposes of flood control and irrigation. The dam is 78m (256feet) tall and was constructed between 1956 and 1958.
In September 1955, planning for dams in the Liuxi River basin began and by January 1956, plans for the Liuxihe Dam were complete. In August 1956, construction on the dam began and excavation commenced the next month and continued until April 1957, removing 680000m2 of rock and material. The same month that excavation was complete, concrete placement began and continued until September 1958. Earlier in August, the first generator was placed online and the rest were operational by the end of 1958. Originally, the dam supported 4 × 10.5 MW generators but in 1993, they were upgraded to 12 MW each.[1]
The dam is a 255.5m (838.3feet) long and 78m (256feet) high double-curvature arch dam with a crest width of 2m (07feet) and base width of 22m (72feet). The dam is composed of 130000m2 of concrete and contains seven openings on its surface to discharge water downstream. Each opening is 11.5m (37.7feet) wide and 4m (13feet) high with a discharge capacity of 141m3/s each. A 237m (778feet) long discharge tunnel with a maximum capacity of 1070m3/s is also built on the dam's right bank.[1]
An axillary dam was built in conjunction with the project in order to protect low-lying areas from the reservoir. It is located about 2km (01miles) northwest of the main dam and is an embankment type. The dam is 29.7m (97.4feet) tall and 220m (720feet) long while having a structural volume of 350000m2. After the completion of the Huanglongdai Dam in June 1975, the downstream side of the auxiliary dam is now the Huanglongdai Reservoir in which it now serves to regulate both.[1]