Zengwen Reservoir full after heavy rains, begins significant water release

Taiwan's largest reservoir, Zengwen, is operating at 100% capacity following substantial rainfall that has added over 210 million cubic meters of water to its catchment area since August 19. This influx is equivalent to the effective capacity of the Shihmen Reservoir. The Zengwen Reservoir commenced controlled water releases on August 24, having already discharged more than 86 million cubic meters, a volume greater than the entire capacity of the Nanhua Reservoir. The reservoir continues to maintain full water levels. Water authorities initiated releases through the permanent river outlet at 50 cubic meters per second on August 24. With continued rainfall, a second release began on August 25 via the spillway, including flushing operations, to increase storage space and manage potential water from Typhoon Saola. Discharge rates have varied, reaching up to 950 cubic meters per second before being reduced. As of late Wednesday night, both Zengwen and Wushantou reservoirs remain at 100% capacity, holding a combined 550 million cubic meters. Officials are advising downstream communities to stay away from riverbanks for their safety.