SWAT and IHACRES models for the simulation of rainfall-runoff of Dez watershed

Due to the scarcity of meteorological observation stations in some areas, there is not enough data available for hydrological simulation as one of the main subjects of hydrology and environmental subjects. This can be partially solved by extracting the required data from global climate centers. The...

Full description

Saved in:

Bibliographic Details
Published in:	Climate dynamics Vol. 62; no. 4; pp. 2823 - 2835
Main Authors:	Jaberzadeh, Mohamad, Saremi, Ali, Ghorbanizadeh Kharazi, Hossein, Babazadeh, Hossein
Format:	Journal Article
Language:	English
Published:	Berlin/Heidelberg Springer Berlin Heidelberg 01-04-2024 Springer Nature B.V
Subjects:	Calibration Climate Climate models Climatology Communication Earth and Environmental Science Earth Sciences Evapotranspiration Evapotranspiration models Geophysics/Geodesy Global climate Hydrologic models Hydrology Meteorological observations Oceanography Precipitation Rainfall Rainfall simulators Rainfall-runoff modeling Rainfall-runoff relationships Runoff Simulation Soil water Stream discharge Stream flow Unit hydrographs Watersheds SWAT IHACRES Hydrological simulation Meteorological observation Flooding rate
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	Due to the scarcity of meteorological observation stations in some areas, there is not enough data available for hydrological simulation as one of the main subjects of hydrology and environmental subjects. This can be partially solved by extracting the required data from global climate centers. The essential data for modeling rainfall-runoff of Dez watershed (16,000 km 2 ), Khuzestan province, Iran, for a 20-year period (1990–2010) were obtained from NCEP CFSR climate center. The simulation (calibration and validation) was done by Soil and Water Assessment Tool (SWAT) and Identification of Unit Hydrographs and Component Flows from Rainfall, Evapotranspiration and Streamflow (IHACRES) models. The SWAT-CUP software has been used for optimization, calibrating and analyzing the uncertainty of the SWAT model by communicating with the model. The ability of the models to simulate the runoff of the basin was determined using the coefficient of determination (R 2 ) and Nash–Sutcliffe efficiency (NSE). R 2 and NSE for the SWAT model were 0.75, and 0.78 (calibration), and 0.59 and 0.72 (validation); for the IHACRES model, they were equal to 0.63 and 0.69 (calibration), and 0.54 and 0.66 (validation), respectively. The SWAT model performed better than the IHACRES model by efficiently using the climatic database of NCEP CFSR center. The IHACRES model was also able to simulate the runoff of the watershed with a relatively high correlation with the observational data. It is possible to simulate and predict rainfall-runoff of the Dez watershed using the tested models for taking the measures, which may avoid natural phenomenon including flooding.
ISSN:	0930-7575 1432-0894
DOI:	10.1007/s00382-022-06215-2