INVESTIGATING GEOLOGY IMPACT UPON FLOOD OCCURRENCE (CASE STUDY: JONEGHAN WATERSHED BASIN, SHAHR-E-KORD)

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FEIZ NIA S.; MUSAVIAN M.; ABDOLAHIAN DEHKORDI Z.; EBRAHIMI DORCHEH KH.

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Journal: Journal of Range and Watershed Managment Year:2017 | Volume:69 | Issue:4 Page(s): 1017-1029

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Title

INVESTIGATING GEOLOGY IMPACT UPON FLOOD OCCURRENCE (CASE STUDY: JONEGHAN WATERSHED BASIN, SHAHR-E-KORD)

Author(s)

FEIZ NIA S. | MUSAVIAN M. | ABDOLAHIAN DEHKORDI Z. | EBRAHIMI DORCHEH KH. | Issue Writer Certificate

Keywords

GEOLOGYQ2

FLOOD OCCURRENCEQ2

GISQ2

ERODIBILITY OF GEOLOGICAL MATERIALSQ1

JONEGHAN DRAINAGE BASINQ2

Abstract

Physical characteristics of drainage basins such as geological materials, landuse type and vegetation cover, soil type, surface permeability, depth of underground water table, topographical conditions and drainage are important factors in FLOOD OCCURRENCE which affect prevailing equations on water movement in drainage and determine storage capacity of drainage basins. GEOLOGY is one of the most important factors affecting FLOOD OCCURRENCE of drainage basin. In this study it is attempted to investigate the effect of GEOLOGY factor on FLOOD OCCURRENCE in JONEGHAN DRAINAGE BASIN, Shahr-e – Koord, using a new method. In this respect, after preparing base maps consisting of slope amount, GEOLOGY, landuse, erodibility of geological material, soil depth and drainage pattern, studies were performed in two stages as follows: In the first stage, FLOOD OCCURRENCE of hill slopes of each sub- catchment was investigated. For doing so, work unit map was prepared using slope and infiltration maps. Then in each sub-catchment, land use, ERODIBILITY OF GEOLOGICAL MATERIALS and soil depth were overlaid with work unit map one by one and dually. In the second stage, FLOOD OCCURRENCE of drainage was investigated as follows: First, longitudinal profile of main drainage of each subcatchment was prepared using GIS. For investigation of FLOOD OCCURRENCE of drainages, slope and permeability of geological units were used. The results of the first stage showed that permeability, slope, ERODIBILITY OF GEOLOGICAL MATERIALS and soil depth have the greatest effect on FLOOD OCCURRENCE, respectively. Also based on this four – factor method, subcatchments were divided into five FLOOD OCCURRENCE classes as follow: low, low to medium, medium, relatively high, and high. The results of the second stage showed that drainage FLOOD OCCURRENCE belongs to two classes of low to medium and medium. By combining slope and drainage FLOOD OCCURRENCE, it can be concluded that the third subcatchment with medium FLOOD OCCURRENCE is more susceptible to flood relative to other subcatchments. With regard to the results of the present study, it can be concluded that GEOLOGY has high impact on FLOOD OCCURRENCE and permeability of geological materials decrease FLOOD OCCURRENCE in the basin.

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APA: Copy

FEIZ NIA, S., MUSAVIAN, M., ABDOLAHIAN DEHKORDI, Z., & EBRAHIMI DORCHEH, KH.. (2017). INVESTIGATING GEOLOGY IMPACT UPON FLOOD OCCURRENCE (CASE STUDY: JONEGHAN WATERSHED BASIN, SHAHR-E-KORD). JOURNAL OF RANGE AND WATERSHED MANAGEMENT (IRANIAN JOURNAL OF NATURAL RESOURCES), 69(4), 1017-1029. SID. https://sid.ir/paper/162421/en

Vancouver: Copy

FEIZ NIA S., MUSAVIAN M., ABDOLAHIAN DEHKORDI Z., EBRAHIMI DORCHEH KH.. INVESTIGATING GEOLOGY IMPACT UPON FLOOD OCCURRENCE (CASE STUDY: JONEGHAN WATERSHED BASIN, SHAHR-E-KORD). JOURNAL OF RANGE AND WATERSHED MANAGEMENT (IRANIAN JOURNAL OF NATURAL RESOURCES)[Internet]. 2017;69(4):1017-1029. Available from: https://sid.ir/paper/162421/en

IEEE: Copy

S. FEIZ NIA, M. MUSAVIAN, Z. ABDOLAHIAN DEHKORDI, and KH. EBRAHIMI DORCHEH, “INVESTIGATING GEOLOGY IMPACT UPON FLOOD OCCURRENCE (CASE STUDY: JONEGHAN WATERSHED BASIN, SHAHR-E-KORD),” JOURNAL OF RANGE AND WATERSHED MANAGEMENT (IRANIAN JOURNAL OF NATURAL RESOURCES), vol. 69, no. 4, pp. 1017–1029, 2017, [Online]. Available: https://sid.ir/paper/162421/en

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