Taipei's Dunhua North Road Underground Drainage Project to be Completed by 2029, Storing Volume Equivalent to 16 Swimming Pools
Taipei City is constructing the Dunhua North Road underground reservoir, a 1.1km pipe capable of storing 32,000 tons of rainwater to enhance flood control. The NT$1.7 billion project, using shield tunneling, is set to begin in July and complete by the end of 2029.
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- 📰 Published: April 8, 2026 at 11:38
- 🔍 Collected: April 8, 2026 at 12:00 (22 min after Published)
- 🤖 AI Analyzed: April 20, 2026 at 12:42 (288h 42m after Collected)
Mayor Chiang Wan-an of Taipei City announced last year that the city would pioneer the construction of an underground pipe-shaped flood retention facility, the "Dunhua North Road Reservoir Facility" (Dunbei Underground Drainage). This facility will utilize MRT shield tunneling technology to construct storage pipes, enabling it to provide a buffer function immediately upon the arrival of heavy rains.
The Taipei City Public Works Department, Water Resources Engineering Office, announced in a press release today that the bid for the Dunbei Underground Drainage project has completed its evaluation and award process, with Xiangyi Construction Engineering Co., Ltd. winning the bid. Construction is scheduled to commence in July and be completed by the end of ROC year 118 (2029).
The Water Resources Office explained that this project, with a budget of approximately NT$1.7 billion, will extend south from Dunbei Park to Nanjing East Road. It will feature a storage pipe with an inner diameter of 6.1 meters and a length of 1117 meters, providing a total storage capacity of 32,000 tons, equivalent to the volume of 16 standard swimming pools. This will effectively enhance regional drainage capacity and further strengthen the urban flood control system.
The Water Resources Office stated that the project draws upon the experience of Japan's Tokyo Gaikaku Water Retention Facility, employing shield tunneling technology for construction approximately 20 to 35 meters underground. Excavation will proceed without disturbing surface traffic, surrounding commercial activities, or affecting ground-level recreational spaces. By connecting with the surrounding drainage system, it will function like underground minimally invasive surgery. Upon completion, it will not only improve the city's capacity to withstand rainfall and speed up post-disaster recovery but also become a new landmark for disaster prevention. (Editor: Li Xizhang) 1150408
The Taipei City Public Works Department, Water Resources Engineering Office, announced in a press release today that the bid for the Dunbei Underground Drainage project has completed its evaluation and award process, with Xiangyi Construction Engineering Co., Ltd. winning the bid. Construction is scheduled to commence in July and be completed by the end of ROC year 118 (2029).
The Water Resources Office explained that this project, with a budget of approximately NT$1.7 billion, will extend south from Dunbei Park to Nanjing East Road. It will feature a storage pipe with an inner diameter of 6.1 meters and a length of 1117 meters, providing a total storage capacity of 32,000 tons, equivalent to the volume of 16 standard swimming pools. This will effectively enhance regional drainage capacity and further strengthen the urban flood control system.
The Water Resources Office stated that the project draws upon the experience of Japan's Tokyo Gaikaku Water Retention Facility, employing shield tunneling technology for construction approximately 20 to 35 meters underground. Excavation will proceed without disturbing surface traffic, surrounding commercial activities, or affecting ground-level recreational spaces. By connecting with the surrounding drainage system, it will function like underground minimally invasive surgery. Upon completion, it will not only improve the city's capacity to withstand rainfall and speed up post-disaster recovery but also become a new landmark for disaster prevention. (Editor: Li Xizhang) 1150408