Project Content and Legislative Rationale
In recent years, Taiwan has been significantly impacted by climate change, with frequent occurrences of extreme rainfall events. The combination of rapid urbanization and extensive land development in the upper reaches of river basins has led to an increased and rapid surface runoff compared to the past. This has posed a growing threat of urban flooding, with the accumulation of flood risks becoming more pronounced.
Faced with extreme rainfall events surpassing established protection standards, traditional flood control measures are no longer sufficient. Only through runoff allocation and effluent control measures can land resilience to flooding be enhanced. Appropriately distributing rainfall runoff between waterways and land helps improve land resilience to flooding, reducing the risk of inundation in human settlements solely reliant on waterways for flood accommodation. This approach aims to minimize the risks to life and property, as well as mitigate potential losses.
Due to the relatively novel concept of "runoff allocation and outflow control," a lively video has been created to ensure the public's full understanding. The aim is to provide a quick overview of the government's policy principles and expected outcomes. Through this, it is hoped that the general public will gain a rapid understanding of the government's governance philosophy and anticipated results, encouraging ongoing support for the promotion of various related initiatives.
Significant Achievement Cases
The Water Resources Agency has recently completed the public announcement of the implementation scope for two runoff allocation projects: the drainage of the Tseng-Wen River under central government jurisdiction and the Lukang drainage in Changhua County. These initiatives have demonstrated initial effectiveness.
The runoff allocation measures for the Tseng-Wen River drainage at Andian Elementary School's sports field have been completed. It has a detention area of 0.34 hectares and can handle a runoff volume of 2,196 cubic meters. Additionally, the Lukang drainage runoff allocation project at Luo Jin Elementary School is currently in the construction phase and is expected to be completed in February 2025. It will have a detention area of 0.45 hectares and the capacity to manage a runoff volume of 12,079 cubic meters.