Investigating the effects of land use change on flood hydrograph using HEC-HMS hydrologic model (case study: Ekbatan Dam)

Hydrological modeling academic studies have focused on the response to human-caused land use changes. The effects of land use change on flood degree in the catchment basin of Ekbatan Dam were investigated in this study, which looked at changes that occurred in 1985, 2000, and 2015. A combination of...

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Bibliographic Details
Published in:Natural hazards (Dordrecht) 2021-10, Vol.109 (1), p.145-160
Main Authors: Azizi, Shahla, Ilderomi, Ali Reza, Noori, Hamid
Format: Article
Language:English
Subjects:
Catchment area
Catchment basins
Civil Engineering
Earth and Environmental Science
Earth Sciences
Environmental Management
Flood hydrographs
Floods
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Hydrogeology
Hydrographs
Hydrologic data
Hydrologic models
Hydrologic studies
Hydrology
Image enhancement
Land use
Landsat
Landsat satellites
Mathematical models
Modelling
Natural Hazards
Original Paper
Parameters
Rain
Rainfall
Rainfall runoff
Rainfall-runoff relationships
Remote sensing
Runoff
Runoff volume
Satellite imagery
Spaceborne remote sensing
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Summary:Hydrological modeling academic studies have focused on the response to human-caused land use changes. The effects of land use change on flood degree in the catchment basin of Ekbatan Dam were investigated in this study, which looked at changes that occurred in 1985, 2000, and 2015. A combination of remote sensing and the Hydrologic Engineering Center-Hydrologic Modeling System (HEC-HMS) was used to achieve this goal. First, Landsat satellite images and sensors from Thematic Mapper, Enhanced Thematic Mapper Plus (ETM +), and Operational Land Imager were used to create land use maps for the target years. The weighted curve numbers (CN), a parameter related to infiltration, were then calculated for land uses. The extracted CN value, along with physiographic parameters and rainfall-runoff data, was then imported into the HEC-HMS model to simulate the effect of land use changes on runoff volume. After calibration and validation of the model using five (5) flood events, the simulation results showed an increase in the discharge peak volume of 64.3, 67.3, and 70.5 (m 3 /s) during the years 1985, 2000, and 2015, respectively, which resulted in an increase in the runoff height in these years as well.
ISSN:0921-030X
1573-0840
DOI:10.1007/s11069-021-04830-6