Using SWAT Model to Determine Runoff, Sediment Yield in Maroon-Dam Catchment

doi:10.20431/2454-6224.0312004

Cited by 5 publications

(3 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In SWAT, runoff and sediment movements are simulated at the HRU level, and the water and sediment are then routed through the stream network to the basin outlet [19]. The water balance equation (Equation (1)) is used to simulate the hydrological components at each HRU.…”

Section: Methodology 231 Swat Model Descriptionmentioning

confidence: 99%

“…Soil erosion is a major environmental issue on a global scale. It reduces water quality and soil productivity, increases sediments in reservoirs, and increases the likelihood of flooding [1]. According to [2], around 40,000 large reservoirs are impacted by siltation worldwide, and it is expected that 0.5 to 1 percent of the total storage capacity is lost annually.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Erosion Risk Assessment for Prioritization of Conservation Measures in the Watershed of Genale Dawa-3 Hydropower Dam, Ethiopia

2022

View full text Add to dashboard Cite

Sedimentation is a leading global problem that affects the environment and dams by reducing the live storage capacity of reservoirs and the life expectance of dams. Hence, prioritizing watersheds according to the risk of soil loss is crucial for extending the useful life of dams and reservoirs. The objectives of this study were to assess sediment flow in the Genale Dawa-3 reservoir, identify subbasins that are prone to soil erosion, and evaluate the impact of different management practices on minimizing sediment yields by using the Soil and Water Assessment Tool (SWAT) model. The SWAT model was calibrated and validated by observed streamflow and sediment data based on the SUFI-2 algorithm by SWAT-CUP, and its performance was assessed. The model simulated the average annual sediment yield; the input to the reservoir was 16.83 ton/ha/yr for the period of 1990–2015. From a total of 31 subbasins, 12 were categorized from high to very severe (11–60 ton/ha/yr) sediment-yielding subbasins and selected for sediment management. The simulated scenarios showed that the average annual sediment reductions at critical erosion hot spots in subbasins after the application of filter strips, soil/stone bund, terracing, and contour farming were 35.03%, 66.54%, 80.88%, and 53.11%, respectively. Therefore, this study concluded that reducing sediment yield by implementing terracing in critical areas at risk of soil erosion was more effective than other soil conservation measures. Overall, this research can help planners and decision-makers to implement appropriate soil conservation measures in the most erosive subwatersheds in order to extend the useful life of the Genale Dawa-3 hydropower dam and reservoir.

show abstract

Section: Methodology 231 Swat Model Descriptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Erosion Risk Assessment for Prioritization of Conservation Measures in the Watershed of Genale Dawa-3 Hydropower Dam, Ethiopia

2022

View full text Add to dashboard Cite

show abstract

“…It was applicable for predicting sediment load, identifying the erosion area, and evaluating the best management strategies in Ethiopia's watersheds under different scenarios [ 41 , 42 ], and [ 43 ]. The fundamental issue of SWAT model over the other hydrological models is its capacity to predict sediment load if the observed streamflow and sediment data are not sufficient and unreliable in the watershed [ 44 ]. Therefore, the QSWATPLUS model was used in this study to assess the impacts of LULC variations on sediment load in the Koka reservoir.…”

Section: Introductionmentioning

confidence: 99%