scholarly journals Evaluation of the Performance of SWAT Model to Simulate Stream Flow of Mojo River Watershed: In the Upper Awash River Basin, in Ethiopia

Hydrology ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 7
Author(s):  
Ahmednasir Amin ◽  
Nade Nuru
Keyword(s):  
River Basin ◽  
Stream Flow ◽  
Swat Model ◽  
River Watershed ◽  
Awash River Basin

Modeling stream flow and sediment yield using the SWAT model: a case study of Ankara River basin, Turkey

2017 ◽  
Vol 39 (3) ◽  
pp. 264-289 ◽  
Author(s):  
Umit Duru ◽  
Mazdak Arabi ◽  
Ellen E. Wohl
Keyword(s):  
River Basin ◽  
Sediment Yield ◽  
Stream Flow ◽  
Swat Model

scholarly journals Modeling Stream Flow Using SWAT Model in the Bina River Basin, India

2020 ◽  
Vol 12 (03) ◽  
pp. 203-222 ◽  
Author(s):  
Fitsum T. Teshome ◽  
Haimanote K. Bayabil ◽  
L. N. Thakural ◽  
Fikadu G. Welidehanna
Keyword(s):  
River Basin ◽  
Stream Flow ◽  
Swat Model

scholarly journals Prediction of the impacts of climate changes on the stream flow of Ajali River Watershed using SWAT model

2018 ◽  
Vol 36 (4) ◽  
pp. 1286
Author(s):  
A.A. Obasi ◽  
K.N. Ogbu ◽  
E.L. Ndulue ◽  
V.N. Ogwo ◽  
C.C. Mbajiorgu
Keyword(s):  
Stream Flow ◽  
Climate Changes ◽  
Swat Model ◽  
River Watershed

scholarly journals The effect of reforestation on stream flow in Upper Nan river basin using Soil and Water Assessment Tool (SWAT) model

2013 ◽  
Vol 1 (2) ◽  
pp. 53-63 ◽  
Author(s):  
Winai Wangpimool ◽  
Kobkiat Pongput ◽  
Chinnapat Sukvibool ◽  
Samran Sombatpanit ◽  
Philip W. Gassman
Keyword(s):  
River Basin ◽  
Stream Flow ◽  
Assessment Tool ◽  
Swat Model ◽  
Water Assessment ◽  
Soil And Water

Simulation of Non-Point Source Pollution Based on SWAT Model - A Case Study of Ashi River Basin

2014 ◽  
Vol 1073-1076 ◽  
pp. 1751-1755
Author(s):  
Fang Ma ◽  
Xiao Feng Jiang ◽  
Li Wang ◽  
Dan Shan ◽  
Xiong Wei Liang ◽  
...  
Keyword(s):  
River Basin ◽  
Stream Flow ◽  
Assessment Tool ◽  
Swat Model ◽  
Validation Period ◽  
Point Source Pollution ◽  
Water Assessment ◽  
Non Point Source Pollution ◽  
Soil And Water

The Soil and Water Assessment Tool (SWAT) model was examined for its applicability in modeling stream-flow and nutrients (total nitrogen, TN and total phosphorus, TP) in Ashi River Basin, China covering an area of 3545 km2. This model was calibrated by using the observed data of monthly flow during 1996-2005 and nutrients (TN and TP) during 2006-2008, and validated by using the observed data of monthly flow during 2006-2010 and water quality during 2009-2010. For stream-flow, the monthly results of RE, R2 and ENS values reached 6.42%, 0.61 and 0.59 respectively for calibration period, whereas these were-12.83%, 0.69 and 0.67, respectively for validation period; for TN calibration, values of RE, R2 and ENS were-18.33%, 0.64 and 0.55 respectively, and for validation period they were-17.34%, 0.68 and 0.57 respectively; for TP calibration, values of RE, R2 and ENS were-4.32%, 0.61 and 0.56 respectively, and for validation period they were-18.02%, 0.67 and 0.58 respectively. Results show that SWAT has applicability in modeling stream-flow and nutrients (TN and TP) in cold and flat area.

scholarly journals IMPACT OF LAND USE LAND COVER CHANGE ON RUN OFF GENERATION IN TUNGABHADRA RIVER BASIN

2018 ◽  
Vol IV-5 ◽  
pp. 367-374 ◽  
Author(s):  
K. Venkatesh ◽  
H. Ramesh
Keyword(s):  
Land Use ◽  
Land Cover ◽  
Land Cover Change ◽  
River Basin ◽  
Stream Flow ◽  
Swat Model ◽  
Coefficient Of Determination ◽  
Land Use Land Cover ◽  
North East ◽  
The Impact

<p><strong>Abstract.</strong> Streamflow can be affected by a number of aspects related to land use and can vary promptly as those factors change. Urbanization, deforestation, mining, agricultural practices and economic growth are some of the factors related to these land use changes which alter the stream flow. In the present study, the impact of land use land cover change (LULC) on stream flow is studied by using SWAT model for Tungabhadra river basin, located in the state of Karnataka, India. Tungabhadra river originates in the Western Ghats of Karnataka and flows towards north-east and joins the river Krishna. The land use maps of 1993, 2003 and 2018 are used for assessing the stream flow changes with respect to LULC. Calibration and validation of the model for streamflow was carried out using the SUFI-2 algorithm in SWAT-CUP for the years 1983&amp;ndash;1993 and 1994&amp;ndash;2000 respectively. Statistical parameters namely Coefficient of Determination (R<sup>2</sup>) &amp;amp; Nash–Sutcliffe (N-S) were used to assess the efficiency and performance of the SWAT model. It was found that the observed and simulated streamflow values are closely matching, which in turn projects that the model results are acceptable. The calibrated model was used for simulation of future dynamic land use scenario to assess the impact on streamflow. The results can be used for conservation of water and soil management.</p>

scholarly journals Assessment of discharge and sediment flows in a river through a combined hydraulic and hydrologic routing techniques

2021 ◽  
Author(s):  
Abebe Tadesse Bulti
Keyword(s):  
Regression Model ◽  
River Basin ◽  
Swat Model ◽  
Model Performance ◽  
Simulation Models ◽  
Flood Routing ◽  
Water Resources Systems ◽  
Awash River Basin ◽  
Routing Method ◽  
Routing Methods

Abstract An advancement of flood routing methods is important for the design and management of the water resources systems. Hydraulic and hydrologic routing approach are widely applied in most simulation models, separately. The combined hydrologic and hydraulic routing method where recent approach to improve the modeling effort in hydrological studies. The main drawback of hydrologic routing methods was inaccuracy on downstream areas of the river basin, where the effect of hydraulic structures and the river dynamics processes are dominant. The hydraulic routing approaches are relatively good on a downstream reaches of a river. This research was done on the Awash River basin at the upstream areas of a Koka dam. A combined hydrologic and hydraulic approach was used to assess the discharge and sediment flow in the river basin. The hydrologic routing method was applied at an upstream part of a river basin through a SWAT model. HEC-RAS model was applied at the middle and downstream areas of the basin based on hydraulic routing principle. The combined routing method can improve the result from the simulation and increases the accuracy in the prediction of the peak flow. It can simulate all the discharges for both short and long-term duration with good model performance indicators. Besides, sediment modeling was done by comparing the regression model, SWAT model, and combination of HEC-RAS and SWAT model. The result from the sediment modeling indicates that the regression model and the combined models show good agreement in predicting the suspended sediment in the Awash River basin.

scholarly journals Assessment of Climate Change Impacts on River Flow Regimes in the Upstream of Awash Basin, Ethiopia: Based on IPCC Fifth Assessment Report (AR5) Climate Change Scenarios

Hydrology ◽  
2020 ◽  
Vol 7 (4) ◽  
pp. 98
Author(s):  
Mekonnen H. Daba ◽  
Songcai You
Keyword(s):  
Climate Change ◽  
River Basin ◽  
River Flow ◽  
Assessment Tool ◽  
Swat Model ◽  
Resource Planning ◽  
Global Climate Models ◽  
Climate Change Scenarios ◽  
Climate Data ◽  
Awash River Basin

The Awash River Basin is the most irrigated area in Ethiopia, which is facing critical water resources problems. The main objective of this study was to assess the impacts of climate change on river flows in the upper Awash Subbasin, Ethiopia, using the soil and water assessment tool (SWAT) hydrological model. The ensemble of two global climate models (CSIRO-Mk3-6-0 and MIROC-ESM-CHEM with RCP4.5 and RCP8.5) for climate data projections (the 2020s, 2050s, and 2080s) and historical climate data from 1981–2010 was considered. Bias-corrections were made for both the GCM data. SWAT model was calibrated and validated to simulate future hydrologic variables in response to changes in rainfall and temperature. The results showed that the projected climate change scenarios were an increase in rainfall for the period of the 2020s but reduced for the periods of 2050s and 2080s. The annual mean temperature increases, ranging from 0.5 to 0.9 °C under RCP4.5 and 0.6 to 1.2 °C under RCP8.5 for all time slices. In the 2020s, annual mean rainfall increases by 5.77% under RCP4.5 and 7.80% under RCP8.5, while in 2050s and 2080s time slices, rainfall decrements range from 3.31 to 9.87% under RCP4.5 and 6.80 to 16.22% under RCP8.5. The change in rainfall and temperature probably leads to increases in the annual streamflow by 5.79% for RCP4.5 and 7.20% for RCP8.5 in the 2020s, whereas decreases by 10.39% and 11.45% under RCP4.5; and 10.79% and −12.38% for RCP8.5 in 2050s and 2080s, respectively. Similarly, in the 2020s, an increment of annual runoff was 10.73% for RCP4.5 and 12.08% for RCP8.5. Runoff reduces by 12.03% and 4.12% under RCP4.5; and 12.65% and 5.31% under RCP8.5 in the 2050s and the 2080s, respectively. Overall, the results revealed that changes in rainfall and temperature would have significant impacts on the streamflow and surface runoff, causing a possible reduction in the total water availability in the subbasin. This study provides useful information for future water resource planning and management in the face of climate change in the upper Awash River basin.

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