| Zhuoshui River | |
| Map: | Zhuoshui basin map.png |
| Pushpin Map: | Taiwan |
| Subdivision Type1: | Country |
| Subdivision Type3: | Region |
| Subdivision Name3: | Changhua, Chiayi, Nantou, Yunlin, Taiwan |
| Length: | 203km (126miles) |
| Discharge1 Avg: | 164.8m3/s |
| Source1: | Wushe River |
| Source1 Location: | Hehuanshan East Peak, Nantou County |
| Mouth Location: | Between Changhua County and Yunlin County |
| Basin Size: | 3155.21km2 |
| Tributaries Left: | Chingshui River, Chenyoulan River, Kashe River, and others |
| Tributaries Right: | Shuili River, and others |
| Custom Label: | Bridges |
| Custom Data: | Xiluo Bridge |
The Zhuoshui River, also spelled Choshui or Jhuoshuei River, is the longest river in Taiwan.[1] It flows from its source in Nantou County up to the western border of the county, subsequently forming the border between Yunlin County and Changhua County, with a total length of .[2]
The river serves as an unofficial boundary between the north and south of Taiwan.[3] [4] [5]
It is dammed in its upper reaches by the Wushe and Wujie Dams, and further downstream by the Jiji Weir.
The Zhuoshui River environment has in recent years been seriously degraded both by the construction of a dam across the river at Jiji and by the ongoing activities of the concrete industry.