| Dadu River Wu River Black River | |
| Source1 Location: | Central Mountain Range western foothills of Hehuanshan |
| Mouth Location: | Taiwan Strait Taichung City/Changhua County border |
| Basin Size: | 2025.6km2 |
| Subdivision Type1: | Country |
| Subdivision Name1: | Taiwan |
| Length: | 124km (77miles) |
The Dadu River also called the Wu River, is a major river located in the Northwest of Taiwan. With a total length of it is sixth-longest river on the island. [1]
The Dadu River is named after a former port near its mouth, now the Dadu District of Taichung.
It is also known as the, a calque of its Hokkien name. The same name appears in English as the the pinyin romanization of its Mandarin pronunciation. It received the name from the many black-winged birds that used to live along the river.
It flows through Taichung City, Changhua County, and Nantou County for 119km (74miles).[2] [3] [4] It is the 6th-longest river on Taiwan Island and the 4th-largest in terms of drainage area.[2]