Hydrological modelling of upper Ebonyi watershed using the SWAT model. (2018)

• Record Type: Journal Article
• Authors: Ndulue, E.L.; Ezenne, G.I.; Mbajiorgu, C.C.; Ogwo, V.; Ogbu, K.N.
• Is Part Of: International journal of hydrology science and technology. Volume 8:Number 2(2018)
• Page Start: 120
• Page End: 133
• Publication Date: 2018
• Subjects: hydrological modelling -- soil and water assessment tool -- SWAT -- upper Ebonyi watershed; Hydrology -- Periodicals; Water resources development -- Periodicals; Hydrology; 553.705
• Languages: English
• ISSNs: 2042-7808

Abstract

In this study, soil and water assessment tool (SWAT) model was applied to the upper Ebonyi Watershed to simulate streamflow and sediment yield. Results of sensitivity analysis, model calibration and model validation showed that the SWAT model performed reasonably for this study area. Streamflow and sediment discharge predictions were calibrated and validated against the daily flow using observed data. The simulated daily flow fit the observed data for the calibrated period with R 2, NSE and PBIAS values of 0.68, 0.58 and –0.871% respectively while the simulated daily sediment yield fit the observed data with R 2, NSE and PBIAS values of 0.53, 0.51 and 24.11% respectively. For the validation period, the values of R 2, NSE and PBIAS values are 0.747, 0.719 and 5.16% for streamflow while, the values of R 2, NSE and PBIAS values are 0.647, 0.606 and 4.92% for sediment yield. Thus, SWAT is an effective tool for watershed management.