MONTHLY SIMULATION OF STREAMFLOW AND SEDIMENT USING THE SWAT IN NAZLOCHAI AND PRIORITIZATION OF CRITICAL REGIONS

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ERFANIAN MAHDI; BAYAZI MANSOR; ABGHARI HIRAD; ESMALI OURI ABAZAR

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Journal: WATERSHED ENGINEERING AND MANAGEMENT Year:2016 | Volume:7 | Issue:4 Page(s): 552-562

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Title

MONTHLY SIMULATION OF STREAMFLOW AND SEDIMENT USING THE SWAT IN NAZLOCHAI AND PRIORITIZATION OF CRITICAL REGIONS

Author(s)

ERFANIAN MAHDI | BAYAZI MANSOR | ABGHARI HIRAD | ESMALI OURI ABAZAR | Issue Writer Certificate

Keywords

MODEL CALIBRATIONQ2

PREDICT MONTHLYQ2

SIMULATING MONTHLY FLOWQ2

SUFI2Q2

Abstract

Soil erosion from socio-economic and environmental aspects of view is important, and decision making for applying proper watershed management practices is essential to control or mitigate it. In recent years, the Soil and Water Assessment Tool (SWAT) model as widely-used tool have been applied to simulate flow discharge, sediment yield, and to evaluate watershed management practices in reducing runoff and sediment yield. This research aims to simulate monthly flow discharge and sediment yield using the SWAT model to identify critical sub-watersheds yielding specific sediment in Nazlochai watershed, located in the West of the Urmia Lake. In this study, a monthly stream flow and sediment discharges data series were used during 1997– 2007 for MODEL CALIBRATION and 1993– 96 for validation. To evaluate model efficiency, some statistical criteria consist of the determination coefficient (R2), the Root Mean Square Error (RMSE), the Nash-Sutcliffe Efficiency (NSE), and the Mean Bias Error (MBE) was used. For the sake of MODEL CALIBRATION, validation and uncertainty analysis, the SUFI2 program was utilized, which it is included in the SWAT-CUP software as a public domain program. The NSE values for SIMULATING MONTHLY FLOW discharge in calibration and validation periods were 0. 7 and 0. 85, while for monthly sediment discharge simulation were 0. 65 and 0. 75, respectively. The evaluation criteria showed that the model is satisfactory capable to PREDICT MONTHLY flow and sediment discharges. To identify critical areas, the calibrated model was applied in validation period. Out of 17 sub-watersheds, sub-watersheds 17, 13, and 16 with the highest amounts of Specific Sediment Yield (SPY) in ton/ha/year were identified as critical sub-watersheds and were prioritized respectively for soil conservation and management purposes.

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APA: Copy

ERFANIAN, MAHDI, BAYAZI, MANSOR, ABGHARI, HIRAD, & ESMALI OURI, ABAZAR. (2016). MONTHLY SIMULATION OF STREAMFLOW AND SEDIMENT USING THE SWAT IN NAZLOCHAI AND PRIORITIZATION OF CRITICAL REGIONS. WATERSHED ENGINEERING AND MANAGEMENT, 7(4 ), 552-562. SID. https://sid.ir/paper/234728/en

Vancouver: Copy

ERFANIAN MAHDI, BAYAZI MANSOR, ABGHARI HIRAD, ESMALI OURI ABAZAR. MONTHLY SIMULATION OF STREAMFLOW AND SEDIMENT USING THE SWAT IN NAZLOCHAI AND PRIORITIZATION OF CRITICAL REGIONS. WATERSHED ENGINEERING AND MANAGEMENT[Internet]. 2016;7(4 ):552-562. Available from: https://sid.ir/paper/234728/en

IEEE: Copy

MAHDI ERFANIAN, MANSOR BAYAZI, HIRAD ABGHARI, and ABAZAR ESMALI OURI, “MONTHLY SIMULATION OF STREAMFLOW AND SEDIMENT USING THE SWAT IN NAZLOCHAI AND PRIORITIZATION OF CRITICAL REGIONS,” WATERSHED ENGINEERING AND MANAGEMENT, vol. 7, no. 4 , pp. 552–562, 2016, [Online]. Available: https://sid.ir/paper/234728/en

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