1. Yuansantze Flood Diversion Project: Construction of a weir, utilizing a spillway to shunt the flood of the Keelung River as it flows into East China Sea, thus lowering the downstream flood level.
2. Depression Area Flood-Control Segmented Constructions: Dividing the depression area of Taipei County into eleven flood-control segments, integrating the constructions of dikes, improvement on branch outlets and bridges, and protective measures on gap emergencies.
3. Coordinated Constructions: Improvement construction of Badu Railway Bridge peripheral area and construction of Yuansan Spillway.
4. Hillside Conservation: Work on forest conservation and soil conservation of upstream storage area of Yuansantze Floodway, reducing the storage area’s earth-flow into Keelung River.
5. Other Projects: Planning and designing of flood-detention areas of Keelung River's Yuansan bottleneck segment, flood areas, and subsequent executable substitute plans.
6. Flood Forecast and Inundation Alarm Systems: The hydraulic observatories within the basin feeding instant data back to the computer data base of Danshuei River basin’s flood control command center, providing the public with Internet inquiries and central supervision, and flood forecast software for forecasting the changes of subsequent water level, which serve as decision basis for withdrawal judgment of the people in the possible flooding areas.
▲Project Duration
From July 2002 to May 2005
▲ Source of Budget
The early stage plan has a special budget of $31.61573 billion NT dollars., budgeted by
the central government according to the “Special Regulations on Keelung River Basin Remediation,? and sanctioned by the Legislative Yuan in the interim meeting on July 17th, 2002.
▲ Anticipated Results
The project enables the bureau to control the rainfall of Huoshaoliao and 18% area of the basin, avoid levying the extensive private lands around middle and downstream areas in Sijhih, improve the bridges, divert 1310 CMS in peak from upper Keelung River with 200-year-frenquency flood 1620 CMS into the East China Sea, and lower the water level of the downstream Keelung River by 1.5 meters in average (3.13 meters in average in Rueifang segment).
After the completion of all the flood-control segments, the segment of Keelung River below Houtong’s Jieshou Bridge can reach the 200-year-flood frequency protection criteria, resisting floods of Nari Typhoon scale. It protects 713 hectares of area in Taipei County and 316 hectares of area in Keelung City.