文献知网节
  • 记笔记

HYDROLOGICAL MODELLING AND FLOOD HAZARD MAPPING OF NULLAH LAI

Bashir Ahmad1Muhammad Shumail Kaleem2Mohsin Jamil Butt3Zakir Hussain Dahri1

1. Pakistan Agricultural Research Council (PARC),Islamabad,Pakistan2. Pakistan Poverty Alleviation Fund,Islamabad,Pakistan3. Department of Meteorology,COMSATS,Islamabad,Pakistan

摘要:Floods are among the most devastating natural hazards in the world causing huge losses of lives and infrastructure. Flooding can be partially avoided but flood hazards can never be ruled out. However, future flood prevention measures require a stronger stress on integrated approaches incorporating flood forecasting and risk uncertainties. Therefore, an appropriate flood modeling and mapping approach is needed to assess the potential damages. This study is carried out by integrating hydrological models with GIS to estimate the flood zone of Nullah Lai in Rawalpindi. HEC-RAS and HEC-Geo RAS hydrological models have been used to delineate the areas vulnerable to flood at different discharge values. A topographic survey of fine resolution of the target area(Kattarian to Gawalmandi Bridges) was used to generate the DEM of the area. Krigging was used to interpolate the elevation data. GIS technology has been used to delineate the variation of topography and to find the inundation depths at various locations in the study area. Inundation area estimated at the discharge value of 3000 m3/sec is 3.4 km2 out of which 2.96 km2 is occupied under the inundation depth from 1 to 5 meters. Maximum inundation depth can go up to 20 meters for this discharge value. Output of the study using HEC-RAS shows that inundated areas and inundation depths are in close approximation with survey based inundation results obtained by JICA. This shows that the integrated modeling approach used in the present study works well in order to delineate areas vulnerable to flood with a good estimation of inundation depths at a specific discharge value.
会议名称:

The 4th Session of 2010 Workshop of Pakistan Academy of Sciences

会议时间:

2010-12-01

会议地点:

Islamabad,Pakistan

  • 专辑:

    工程科技Ⅱ辑

  • 专题:

    水利水电工程

  • 分类号:

    TV87

  • 手机阅读
    即刻使用手机阅读
    第一步

    扫描二维码下载

    "移动知网-全球学术快报"客户端

    第二步

    打开“全球学术快报”

    点击首页左上角的扫描图标

    第三步

    扫描二维码

    手机同步阅读本篇文献

  • HTML阅读
  • CAJ下载
  • PDF下载

下载手机APP用APP扫此码同步阅读该篇文章

下载:5 页码:22-33 页数:12 大小:659k

引文网络
  • 参考文献
  • 引证文献
  • 共引文献
  • 同被引文献
  • 二级参考文献
  • 二级引证文献
  • 批量下载
相关推荐
  • 相似文献
  • 读者推荐
  • 相关基金文献
  • 相关法规
  • 关联作者
  • 相关视频