Upper Lam Tsuen River

To alleviate the flood risk in Lam Tsuen River Basin, the DSD undertook the River Improvement Works in Upper Lam Tsuen River in 2007 with construction completed in 2012. Given the extraordinary ecological conservation value of the Upper Lam Tsuen River, in the design the original natural river course was preserved as far as practical with river sections having sufficient drainage capacity being left undisturbed. Fish ladders are provided across cascades to maintain ecological continuity along the river channel. Other conservation measures include the use of gabion walls as river banks to cultivate a natural ecology within the riparian zones, re-use of the original riverbed materials for restoring the rip-rap base of the river channel, and avoiding the use of concrete to create a natural stream environment.