Assessment of Vanes Effectiveness in Controlling Erosion and Deposition Zones at a River Confluence using a 2D model

Ali, Hydar Lafta; Yusuf, Badronnisa; Mohammed, Thamer Ahmed; Shimizu, Yasuyuki; Razak, Mohd Shahrizal Ab; Rehan, Balqis Mohamed

doi:10.30880/ijie.2019.11.02.024

Cited by 2 publications

(1 citation statement)

References 29 publications

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“…Therefore, it is required to control surface runoff that results in erosion and deposing. Controlling erosion and deposition is also used to progress river hydraulic efficiency (Ali et al 2019). Therefore, it is necessary to model surface runoff in this watershed to manage resources to alter the existing situation and improve watershed resources.…”

Section: Introductionmentioning

confidence: 99%

Surface runoff modeling in Ketar watershed, Ethiopia

Sime

Demissie

Tufa

2020

J. Sediment. Environ.

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Surface runoff is a critical input in watershed management. Runoff is a driving force for soil erosion which causes sedimentation of reservoirs located at downstream of watersheds. The present study aimed to model surface runoff using the Soil and Water Assessment Tools (SWAT) model in Ketar watershed, Ethiopia. Ketar river crosses mountainous steep slope areas. High surface runoff from the Ketar watershed flows to Lake Ziway. The Ketar watershed was delineated into 35 subbasins and 147 Hydraulic Response Units (HRUs). In this work, surface runoff was simulated using 36 years meteorological data as input. The model was calibrated and validated for streamflow using sequential uncertainty fitting-2 (SUFI_2) of the SWAT Calibration and Uncertainty Programs (SWAT_CUP). The model calibrated using 12-year measured streamflow data (1988)(1989)(1990)(1991)(1992)(1993)(1994)(1995)(1996)(1997) and validated using 7-year streamflow data (1998)(1999)(2000)(2001)(2002)(2003)(2004). The coefficient of determination (R 2 ) and Nash-Sutcliffe (NSE) were used to measure the performance of the model. R 2 and NSE were 0.82 and 0.7 during calibration and 0.78 and 0.71 during validation, respectively. The results show that there was an excellent relation between monthly observed and simulated streamflow during both calibration and validation. Simulated average monthly surface runoff of the watershed was 112.82 mm per month. The southwest part of the watershed, which was characterized by highest annual surface runoff, covers 27% of the total area.

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Section: Introductionmentioning

confidence: 99%

Surface runoff modeling in Ketar watershed, Ethiopia

Sime

Demissie

Tufa

2020

J. Sediment. Environ.

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Surface runoff modeling using SWAT analysis in Dabus watershed, Ethiopia

Diriba

2021

Sustain. Water Resour. Manag.

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The highlands of Ethiopia are highly threatened by soil erosion. Surface runoff is essential input to manage the watershed. Runoff causes soil erosion which makes sedimentation of reservoirs. The study aimed to simulate surface runoff using the Soil and Water Assessment Tools (SWAT) model in Dabus watershed, Ethiopia. The Dabus River is one of the major tributaries of the Blue Nile River which starts from southeastern highland and flows toward north. Since the topography of the watershed is mountainous steep slope areas, surface runoff is high. The Dabus watershed was delineated into 33 sub-basins and 82 hydraulic response units (HRUs). In this study, surface runoff was simulated using 30 years meteorological data as an input. The model was calibrated and validated for stream flow using sequential uncertainty ftting-2 (SUFI_2) of the SWAT Calibration and Uncertainty Programs (SWAT_CUP). The model was calibrated using 9-year measured streamflow data (1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003) and validated using 8-year streamflow data (2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011). The coefficient of determination (R 2 ) and Nash-Sutclife (NSE) were used to measure the performance of the model. R 2 and NSE were 0.82 and 0.70 during calibration and 0.78 and 0.71 during validation, respectively. The results show that there was very good relation between monthly observed and simulated streamflow during both calibration and validation. Simulated average annual surface runoff of the watershed was 690.84 mm. The southeast part of the watershed was characterized by the highest annual surface runoff. Thus, this study shows that SWAT hydrological model can be used to model Dabus watershed for better assessment and simulation of the hydrological responses. The study recommends more researches which incorporate the land use change of the watershed in the model.

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Assessment of Vanes Effectiveness in Controlling Erosion and Deposition Zones at a River Confluence using a 2D model

Cited by 2 publications

References 29 publications

Surface runoff modeling in Ketar watershed, Ethiopia

Surface runoff modeling in Ketar watershed, Ethiopia

Surface runoff modeling using SWAT analysis in Dabus watershed, Ethiopia

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