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Estimating runoff for analysis of potential flooding Using the Curve Number(CN) method in the Shahrod Basin of Ardabil
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Mousa Abedini *   1, Khodadad Lotfi2 |
1- Associate Professor in Geomorphology, University of Mohaghegh Ardabili, Ardabil, Iran
2- PHD student in Geomorphology, University of Mohaghegh Ardabili, Ardabil, Iran |
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Abstract: (3053 Views) |
| Flooding is a natural phenomenon and the stakes are very important and destructive in the world. Coupled with the loss of life and property every year around the world, and Iran is on. Intense involvement in the development of urban and rural areas and watersheds, without reading and understanding of hydrogeomorphological features of flood plains Leading to increased risk in the Basin and aggravated damages and associated soil erosion caused by floods. Catchment area in the extreme southern part of the province is Ardabil. It is located in the basin due to the rough topography and high altitudes has been Baghrv. In addition, due to the influence of moisture in the Caspian region, is always likely to be discharged outside the drainage basin runoff there. The existence of human settlements, involved in the meadows and slopes, flood risk have increased. Therefore, the research ahead of potential flooding in the basin will be studied. Various methods for determining the amount of runoff and flooding potential zoning there. Most of these methods are based on graphing techniques and the use of empirical formulas, statistical analysis of flood, breakdown of the number of sub-catchment basin, telemetry data and GIS services. To study floods and estimation of the basin volume and peak runoff moment of America Number drop Soil Conservation Service (SCS) was used. Map obtained from the model, using natural fractures were classified in five classes. According to the results of the Central, North West and South and West basins in the zone with great potential and are of great And 5.13 percent of the watershed area has a lot of potential flooding and 14.62 percent also have enormous potential for flooding in the basin area. In the medium potential areas of flooding, the largest catchment area includes the area of 92.89 square kilometers. Potential flood zones 28.14 and 11.89 percent respectively low and very low catchment area are included |
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| Keywords: Shahrod basin, flood hazard, SCS, GIS |
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Full-Text [PDF 1113 kb]
(952 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2017/05/15 | Accepted: 2018/08/2 | Published: 2019/04/8
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