The effect of floods on river morphology changes (case study: Sadij River, Hormozgan Province)

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Rahimi Naimeh; Khaleghi Somaiyeh; Salehipour Milani Alireza

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Journal Paper

Paper Information

Journal: HYDROGEOMORPHOLOGY Year:2024 | Volume:11 | Issue:38 Page(s): 160-141

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Information Journal Paper

Title

The effect of floods on river morphology changes (case study: Sadij River, Hormozgan Province)

Author(s)

Rahimi Naimeh | Khaleghi Somaiyeh | Salehipour Milani Alireza | Issue Writer Certificate

Keywords

Flood

Morphological Changes

Curvature coefficient

RNCI

Sadij River

Hormozgan Province

Abstract

In the east of Jask City, four severe floods with high discharge occurred in the Sadij River between 2009 and 2019. This research aims to evaluate the morphological changes of the Sadij River due to the occurrence of floods over a period of 11 years and in the four significant floods during 2009, 2014, 2017, and 2019. Geomorphic effects on the river were extracted using Landsat and Google Earth satellite images. GIS10.5 software and the Fluvial Corridor were used to investigate the morphological changes caused by floods in the river. The erosion and sedimentation levels were evaluated with the RNCI model. The results showed that the average width of the channel decreased by about 38 m, and the length of the river increased by about 3510 m in the floods between 2009 and 2019, corresponding to the increase in the curvature coefficient of the river from 1.40 to 1.56. According to the results of RNCI, the flood of 2019 with a discharge of 1167.73 m³ caused the highest amount of erosion compared to the other floods. Among the studied reaches, the most changes in geometrical parameters belonged to reach B

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