| Chenyoulan River | |
| Pushpin Map: | Nantou County |
| Pushpin Map Alt: | Map showing the confluence of Chenyoulan and Zhuoshui Rivers |
| Pushpin Map Caption: | Chenyoulan River at its confluence with Zhuoshui River |
| River System: | Zhuoshui River basin |
| Source1 Location: | Mount Yushan |
| Mouth Location: | Zhuoshui River at Shuili, Nantou |
| Mouth Coordinates: | 23.779°N 120.866°W |
| Basin Size: | 448km2 |
| Subdivision Type1: | Country |
| Subdivision Name1: | Taiwan |
| Length: | 42.4km (26.3miles) |
| Discharge1 Max: | 2500m3/s |
The Chenyoulan River or Chenyulan River is a river in Nantou County, Taiwan.[1] It is a tributary of the Zhuoshui River. Villages in the water shed include Dongpu and Fengqui. Its tributary streams are Junkeng, Shibachong, Shalixian, Heshe and Neimaopu Streams. The catchment area is 450 m2 and its length is 42.4 km. The average slope is 5%. The upper reaches drain the north slopes of Yushan up to 3910 metres elevation. The path of the river has been set by the Chenyulan fault.