The Guanshan Canal irrigation area is situated at the southern end of the Huadong Valley, in the northwestern part of Taitung County. It falls under the administrative jurisdiction of Haiduan Township, Guanshan Town, and Luye Township in Taitung County. The irrigated area lies between the Central Mountain Range to the west and the Coastal Mountain Range to the east. The main channel, stretching from Haiduan Township through Guanshan Town to Xinfeng Village in Luye Township, spans a total length of 18.8 km. It irrigates 2,036 hectares of farmland in the longitudinal valley plain between the Xinwulu River, Beinan River, and Luye River.