Speaking at a ceremony to mark the completion of works on the main drainage channels for river indus , river beas and river sutlej , the director of territory development , mr wong hung - kin , said today ( september 17 ) that the works for these three rivers in the river indus basin were sizable and entailed the straightening and widening of some 9km of existing meandering rivers with raised river embankments . the works also included the re - provisioning of existing facilities that were affected by the projects such as the reconstruction of 12 river - crossing bridges 拓展署署长黄鸿坚今日（九月十七日）在梧桐河、双鱼河及石上河主要排水道工程竣工典礼上致辞时表示，整项梧桐河盆地的治河工程涉及上述三条位于新界北区的主要河道，规模庞大，新河道总长约9公里，将原来迂回曲折的河道拉直及扩阔，并且将河堤加高及重置受工程影响的原有设施，包括12条过河桥梁。
Using a " vortex intake " device , the underground drainage system has the dual benefit of relieving storm flow in downstream urban areas in districts such as western and kennedy town , and avoiding the difficulty of constructing or enlarging drains and culverts in urban areas and the resultant disruption to traffic that may ensue . the " vortex intake " project is a significant piece of hku s research achievements , and exemplifies the collaboration between academia , industry and government 漩涡进水口的水力工程，不单可以纾缓西区及坚尼地城一带于暴雨时，因大量急湍的水流往下冲而造成水浸及危险的问题，还避免了在市区兴建或扩建排水道及暗渠的工程；在闹市中进行此类工程十分困难及费时，并且一定会阻碍交通，带来不便。
