Volume 11, Issue 2 (8-2024)
Journal of Spatial Analysis Environmental Hazards 2024, 11(2): 41-56 |
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riahi S, safari A, hisseini S M, ahmadabadi A. Estimation of the flood depthyears in the Qom-Roud River by combining the hydraulic characteristics of the river and the geomorphic characteristics of the catchment area.. Journal of Spatial Analysis Environmental Hazards 2024; 11 (2) : 3
URL: http://jsaeh.khu.ac.ir/article-1-3343-en.html
URL: http://jsaeh.khu.ac.ir/article-1-3343-en.html
1- kharazmi university
2- kharazmi university ,amirsafari@yahoo.com
3- Tehran university
2- kharazmi university ,
3- Tehran university
Abstract: (3109 Views)
In order to plan, manage and exploit water and land resources, awareness of the spatial variability of resources, as well as understanding the response behavior of the watershed in order to model physical processes, has an identical significant role. Due to its location in arid and semi-arid areas, special climatic and geomorphological conditions, Qom-Roud basin is prone to flash floods. Due to the lack of hydrometric and topographical data with high accuracy in the basin, the use of hydraulic models does not lead to accurate results of the hydraulic characteristics of floods. In such a situation, the methods based on the geomorphological features of the basin can be advantageous. In this article, Variable flood stage method (VFS) method is used, which combines the hydraulic characteristics of the river with the geomorphic characteristics of the basin in order to estimate the water depth in the river caused by floods with different return periods. The water depth was investigated for different return periods of two, five, ten, twenty-five, fifty and hundred years. In each period, the highest water depth was in the parts near the outlet and the lowest water depth was in the upstream parts of the river. The research illustrations there is a direct relationship between the depth of water and the area of the sub-basin. The results of this research can be used for basins without hydrometric and topographic statistics with high accuracy in order to estimate the peak speed and flood depth.
Article number: 3
Keywords: flood hazards, Variable flood stage method, Qom-Roud basin, hydraulic model, geomorphy, water depth.
Type of Study: Applicable |
Subject:
Special
Received: 2022/11/5 | Accepted: 2023/01/11 | Published: 2024/08/31
Received: 2022/11/5 | Accepted: 2023/01/11 | Published: 2024/08/31
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