The Daojiang Canal was formed by merging the Daoye Canal and the Jiangjun Canal. Its primary water source is the Bajhang River, with the tributary Chilan River serving as a secondary source. The main facilities at the river weir include a 182-meter dam, three sediment discharge gates, three arc gates, and six water intakes.

The main line extends over 11,000 meters, irrigating areas in Chiayi City and Shuishang Township, covering an irrigated area of over 1,300 hectares.

For over 300 years, the flow of life through this canal and across the Tropic of Cancer has never ceased, with lush greenery along its banks and abundant ecological resources. It is a vital source of life that has nourished the rich cultural heritage of Chiayi.