The Zhoumei Rubber Dam is located 230 meters downstream from the Shuangxi Bridge, where Section 6 of Chengde Road meets the Waishuangxi River. The dam plays a critical role in impounding upstream water from Waishuangxi and preventing tidal backflow from the downstream Keelung River. It is crucial for irrigation and flood control in the Zhoumei and Shipai areas. The reconstruction of this rubber dam was completed in July 2013, with the dam measuring 40 meters in length. The right bank of the dam features a semi-cone-shaped stepped fishway, while the left bank is equipped with a regulating box culvert, a sluice gate, and an operation room.