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使用GIS和HEC-HMS进行城市洪水的降雨-流水建模
Priyanka Sharad Jawale1,2, A D Thube1
1College of Engineering Pune Technological University (Formerly College of Engineering Pune), Pune, India.
MethodsX
|July 4, 2025
概括
在印度瓦卡德流域使用GIS和HEC-HMS精确的降雨-流水建模,改善了水资源规划. 校准模型增强了洪水预测和城市扩张的水供应评估.
科学领域:
- 水文和水资源水文与水资源
- 环境工程 环境工程
- 地理信息系统 (GIS) 是指地理信息系统.
背景情况:
- 城市水资源管理面临挑战,原因是预测水资源的数据限制.
- 准确的降雨-流水模拟对于快速发展地区的可持续水资源管理和规划至关重要.
- 印度马哈拉施特拉邦PCMC的瓦卡德流域需要更好的水文洞察力,以有效地规划水资源.
研究的目的:
- 使用先进的水文建模技术,模拟瓦卡德流域的降雨-流水过程.
- 通过准确的水文洞察力来加强水资源规划和可用性评估.
- 为城市化地区的水资源管理提供数据驱动的决策框架.
主要方法:
- 使用高分辨率的7米数字海拔模型 (DEM) 划定瓦卡德流域的界限.
- 将30年的降雨数据 (1993-2023) 与GIS和HEC-HMS建模集成.
- 应用土壤保护服务曲线号码 (SCS-CN),SCS单元水文仪 (SCS-UH) 和马斯金库姆路由技术.
主要成果:
- 模型校准显著提高了预测准确性,纳什-萨特克利夫效率 (NASH) 增加了44.23%,达到0.624.
- 根平均平方误差 (RMSE) 减少了51.90%,从1.235降至0.813,百分比偏差 (PBIAS) 从43.69%降至25.70%.
- 确定系数 (R2) 提高了4.14%,从0.67到0.699,表明一个具有竞争力和有效的模型.
结论:
- 开发的水文模型在代表瓦卡德流域的行为方面表现出合理的准确性.
- 该研究为模拟城市洪水和支持基础设施发展规划提供了一个强大的框架.
- 这些发现支持在正在进行的城市扩张的背景下采取积极的水资源管理策略.
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