After that figure out the method and details of flood risk map making system.
然后提出洪水风险图制作的方法和步骤。
Flood risk map reflect the different frequency flood and the scope and extent of a region likely to be flooded.
洪水风险图是反映不同频率的洪水发生时，某一区域可能遭受洪水淹没的范围和程度的地图。
The flood risk map was used in risk information inquiring, flood evaluation, design of emergency and refuge plan to form an integrated system of risk management and decision-making.
完成风险信息查询、灾害评估以及抢险与避难方案的设计等，并形成一套完整的风险管理与决策支持应用系统。
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