Assessment of flooding using cluster analysis and multivariable regression methods with emphasis on hydro geomorphological parameters (Case study: Maroon catchment)

Sharifi Paichoon, Mohamad; Omidvar, Kamal; Motazaker, Kowsar

doi:10.22111/jneh.2018.22519.1336

Assessment of flooding using cluster analysis and multivariable regression methods with emphasis on hydro geomorphological parameters (Case study: Maroon catchment)

Document Type : Research Article

Authors

¹ Assistant Professor of Geomorphology, Department of GeographyYazd University, Yazd, Iran

² Professor of Climatology, Department of GeographyYazd University, Yazd, Iran

³ Ma. Of Sc. of Geomorphology, Yazd University, Yazd, Iran

10.22111/jneh.2018.22519.1336

Abstract

Flooding is one of the major environmental hazards within the last century that widespread around the globe. Flooding is often thought of as a result of heavy rainfall, but different geomorphic and hydrologic systems have a different response to the precipitation. The main goal of the research is studying of flooding in the Maroon Catchment that severe flooding has been inflicted great losses in the agricultural, residential and deaths sectors over the past years. Usually, after any heavy rainfall, flooding will be expected. Maroon Catchment has located in the in the Kohgiluyeh and Boyer-Ahmad province, between 30° 40´ to 31° 20´ of northern latitudes and 50° 5´ to 51°10´ of eastern longitudes. To evaluate the various effective hydro geomorphologic parameters on flooding in the basin, we specified 18 different variable, but according to cluster analysis and multivariable regression models, effective parameters on the flood in the region were summarized in 6 factors includes: area, perimeter, and width of the equivalent rectangular, the total length of the drainage network, the length of the basin and average flow length. After choosing variable, standardization of them and using different methods, sub-catchment were separated. According to, sub-catchment divide to four homogeneous groups, each group contain some sub-catchment as follows: group 1 includes 1, 2, 3, 4, 7, 8, 9, 17, 10, 20sub-catchments; group 2 includes 5, 6, 11, 14, 16 sub-catchments, group 3 includes 12, 13, 15, 19sub-catchments, and group 4 include 18sub-catchment. On the basis of the parameters and also analysis of them, we were observed that the sub-catchment of the 1 group had severe floods, the 2 group with medium floods, the 3 group with low floods and the 4 group with the intensity of floods.

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References

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