| Jinshuitan Dam | |
| Location Map: | China |
| Coordinates: | 28.2125°N 119.5364°W |
| Country: | China |
| Location: | Lishui |
| Status: | O |
| Construction Began: | 1981 |
| Opening: | 1986 |
| Dam Type: | Arch |
| Dam Height: | 1020NaN0 |
| Dam Width Crest: | 50NaN0 |
| Dam Width Base: | 24.60NaN0 |
| Dam Crosses: | Longquan Creek |
| Spillway Count: | 2 |
| Spillway Type: | Shallow and intermediate levels on each, flip-bucket dissipation |
| Spillway Capacity: | Shallow: 31220NaN0 Intermediate: 26380NaN0 |
| Res Name: | Xiangong Lake |
| Res Capacity Total: | 13930000000m2 |
| Res Catchment: | 27610NaN0 |
| Res Surface: | 340NaN0 |
| Res Elevation: | 1840NaN0 |
| Res Max Length: | 660NaN0 |
| Plant Operator: | Zhejiang Provincial Electric Bureau |
| Plant Commission: | 1987-1988 |
| Plant Turbines: | 6 x 50 MW Francis-type |
| Plant Capacity: | 300 MW |
| Plant Annual Gen: | 490 GWh |
The Jinshuitan Dam is an arch dam on Longquan Creek, a tributary of the Oujiang River in Zhejiang Province, China. It is located about 470NaN0 southwest of Lishui. The dam and power station were completed in 1988 and serve several purposes to include hydroelectric power generation, water supply, flood control and navigation. It is the first dam of the Oujiang River cascade to be constructed and creates the second largest lake in Zhejiang.[1]
Construction on the dam began in October 1981 and the river was closed the same month in 1983. In 1986, the reservoir began filling and reached conservation storage level. On 7 April 1987, the first generator went online and by 31 December 1988, the other three generators in the power station were commissioned.[2] [3]
The dam is a double-curvature (variable radius) type with a height of 1020NaN0, crest width of 50NaN0 and base width of 24.60NaN0.[2] Sitting at the head of a 27610NaN0 catchment area, the dam creates Xiangong Lake which has a capacity of 13930000000m2.[4] The lake covers a surface area of 340NaN0 and is 660NaN0 in length.[5] The dam has two spillways that lie on either side of the power station. Each spillway has a shallow and an intermediate opening. The shallow openings have a maximum discharge of 31220NaN0 while the intermediate can discharge 26380NaN0. The power station is located at the base of the dam and contains the six 50 MW Francis turbine-generators which are each supplied with water via a 4.50NaN0 diameter penstock. Between the power station and the east spillway, there is a boat/raft lift to move small vessels and lumber from the river below into the reservoir.[2] [6]