试谈小型水利工程年径流计算

小型水利工程量多面广 ,一般没有实测水文资料。为了比较准确计算小型水利工程的年径流量 ,应重视基本资料的收集 ,充分利用工程周边的水文站实测雨量、流量资料 ,并对已有短系列资料进行插补延长到 30年以上 ,使其符合流域水情规律。在年径流计算中 ,建议采用面积比法和流域雨量法

Try to talk the small sized water resources project''s annual runoff calculation

The small sized water resources projects are of large number but the most haven't actual survey hydrologic materials. To calculate exactly the small sized water resources project's annual runoff, basic material's collection should be taken into account, the actual survey precipitation and flow materials of hydrologic station around the project should be made full use, and must supplement and elongate hydrologic series to more than thirty years. The square ratio method and basin precipitation method are commended for annual runoff calculation.