Construction of the Taoyuan Canal irrigation system facilitated the management of irrigation facilities and irrigation water allocation for Lateral Canal 9 of the Taoyuan Canal.

1924, Established and originally named Dajue Monitoring Station.
1948, Renamed Dajue Management Station.
1956, Renamed Xinpo Workstation.
Location: The original and current address is Dajue Village, Guanyin Township, though later, due to divided management, it was relocated to No. 676, Section 2, Zhongshan Road, Neighborhood 4, Datong Village, Guanyin Township.
Building and land: it was self- owned land during the period of Japanese rule (No. 38-6, 39-1, and 39-2, Dajue Section, Guanyin Township, covering an area of 897m²) with a self-built Japanese-style wooden house occupying an area of 165m². In 1963, a one-story concrete office was expanded (floor area 93m²) and renovated in 1976 into a two-story concrete office (floor area 257.28m²).

When the workstation was first established it managed 17 storage pools and 10 river weirs for Lateral Canal 9 of Taoyuan Canal and an irrigation area of 1,730 hectares. In 1961, it helped to accommodate residents relocated from the Shimen Reservoir flooded area and developed reclaimed land, increasing the area by 50 hectares. In 1983, after Guanyin Industrial was established in 1982, farmland in Poliao and Xinpo was readjusted. With the number of small factories and residential communities increasing each year, the original cultivated land fell in size and return water was largely used. As a result, the number of irrigation structures and irrigation area in the jurisdiction changed. Currently, there are 17 water storage pools, 14 river weirs, and an irrigation area of 1,737 hectares.