Determination of Homogeneous Hydrological Regions for Estimating Runoff in Ungauged Catchments Using Cluster Analysis (Case Study: Ardabil Province)

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Poorseifollahi Batoul; Kanooni Amin; Nikpour Mohammadreza; RAMEZANI MOGHADAM JAVAD

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Journal: JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION Year:2021 | Volume:10 | Issue:2 Page(s): 97-112

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Title

Determination of Homogeneous Hydrological Regions for Estimating Runoff in Ungauged Catchments Using Cluster Analysis (Case Study: Ardabil Province)

Author(s)

Poorseifollahi Batoul | Kanooni Amin | Nikpour Mohammadreza | RAMEZANI MOGHADAM JAVAD | Issue Writer Certificate

Keywords

ClusteringQ2

DischargeQ2

Homogeneous regionQ1

Principal component analysisQ1

Abstract

Grouping of catchments based on their climatic factors and physiographic characteristics is a prerequisite for regional analysis of runoff and its use for estimating Discharge of catchments without Discharge measurement station. In this study, catchments located in Ardabil province were separated into homogeneous hydrological zones using Discharge, mean annual precipitation and physiographic characteristics of catchments and hierarchical Clustering method. Due to the large number of parameters, by using Principal component analysis, the first four components with 83. 6% of total variance were selected as inputs for cluster analysis. Then, the optimal number of clusters was determined by using hierarchical method and drawing the tree diagram, and finally the final Clustering was done by K-means method. Subsequently, the sub-catchments that followed a hydrological process were identified using the Dalrymple uniformity test. The results of the uniformity test showed that by excluding stations outside the confidence limits of each cluster, catchments that were similar in terms of annual Discharge and other physiographic and meteorological parameters were clustered. Therefore, the number of sub catchments located in clusters 1, 2, 3 and 4 were 8, 4, 9 and 9 catchments, respectively, which can be used in regional analysis to estimate runoff and floods in catchments without Discharge measurement data.

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APA: Copy

Poorseifollahi, Batoul, Kanooni, Amin, Nikpour, Mohammadreza, & RAMEZANI MOGHADAM, JAVAD. (2021). Determination of Homogeneous Hydrological Regions for Estimating Runoff in Ungauged Catchments Using Cluster Analysis (Case Study: Ardabil Province). JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION, 10(2 ), 97-112. SID. https://sid.ir/paper/411271/en

Vancouver: Copy

Poorseifollahi Batoul, Kanooni Amin, Nikpour Mohammadreza, RAMEZANI MOGHADAM JAVAD. Determination of Homogeneous Hydrological Regions for Estimating Runoff in Ungauged Catchments Using Cluster Analysis (Case Study: Ardabil Province). JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION[Internet]. 2021;10(2 ):97-112. Available from: https://sid.ir/paper/411271/en

IEEE: Copy

Batoul Poorseifollahi, Amin Kanooni, Mohammadreza Nikpour, and JAVAD RAMEZANI MOGHADAM, “Determination of Homogeneous Hydrological Regions for Estimating Runoff in Ungauged Catchments Using Cluster Analysis (Case Study: Ardabil Province),” JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION, vol. 10, no. 2 , pp. 97–112, 2021, [Online]. Available: https://sid.ir/paper/411271/en

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