縣市國土計畫與逕流分擔計畫連結機制建立

Establishing a Mechanism for Linking Local National Spatial Plan and Runoff Allocation Plan

《國土計畫法》自2016年施行後，規範地方政府需依據全國國土計畫與地方需求進行空間規劃，提供整合防災規劃的機會。然而，高密度都市發展導致不透水面積增加，強降雨時易引發淹水問題。為解決此問題，水利署於2019年推動「逕流分擔與出流管制」，但現行規劃流程與行政體系中，縣市國土計畫與逕流分擔計畫缺乏有效的協調機制。本研究以臺南市鹽水溪流域為例，透過深度訪談與專家問卷，識別兩計畫的關聯議題，並運用聯合分析法篩選最佳整合方案。結果顯示，在規劃階段應蒐集逕流分擔計畫資料，召開工作會議；在整體規劃階段舉行機關協商會議；細部規劃階段舉行協調會議；審議階段則應納入水利專家與相關單位，以確保國土計畫充分考量水資源管理需求。本研究結果可作為政府推動兩計畫整合之參考，以提升都市防洪韌性。

Since the implementation of the Spatial Planning Act in 2016, local governments have been required to develop spatial plans based on the National Spatial Plan and local needs, providing an opportunity to integrate disaster prevention planning. However, high-density urban development has led to an increase in impervious surfaces, making flooding more likely during heavy rainfall. To address this issue, the Water Resources Agency launched the Runoff Sharing and Outflow Control initiative in 2019. However, within the current planning processes and administrative framework, there is a lack of effective coordination mechanisms between county and city spatial plans and runoff sharing plans. This study takes the Yanshui River Basin in Tainan City as an example, using in-depth interviews and expert questionnaires to identify key issues related to the two plans and applying the conjoint analysis method to determine the optimal integration strategy. The results show that runoff sharing plan data should be collected in the planning stage, working meetings should be held, inter-agency consultation meetings should be conducted in the overall planning stage, coordination meetings should be arranged in the detailed planning stage, and hydrology experts and relevant agencies should be included in the review stage to ensure that spatial planning fully considers water resource management needs. The findings of this study can serve as a reference for the government in promoting the integration of these two plans to enhance urban flood resilience.