land Article Hydrological Responses to Land Use Land Cover Changes in the Fincha’a Watershed, Ethiopia Urgessa Kenea 1, Dereje Adeba 1, Motuma Shiferaw Regasa 2 and Michael Nones 2,* 1 Department of Hydraulic and Water Resources Engineering, Institute of Engineering and Technology, Wollega University, 395 Nekemte, Oromia Region, Ethiopia;
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[email protected] (D.A.) 2 Department of Hydrology and Hydrodynamics, Institute of Geophysics Polish, Academy of Sciences, 01-452 Warsaw, Poland;
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[email protected] Abstract: Land use land cover (LULC) changes are highly pronounced in African countries, as they are characterized by an agriculture-based economy and a rapidly growing population. Understanding how land use/cover changes (LULCC) influence watershed hydrology will enable local governments and policymakers to formulate and implement effective and appropriate response strategies to minimize the undesirable effects of future land use/cover change or modification and sustain the local socio-economic situation. The hydrological response of the Ethiopia Fincha’a watershed to LULCC that happened during 25 years was investigated, comparing the situation in three reference years: 1994, 2004, and 2018. The information was derived from Landsat sensors, respectively Landsat 5 TM, Landsat 7 ETM, and Landsat 8 OLI/TIRS. The various LULC classes were derived via ArcGIS using a supervised classification system, and the accuracy assessment was done using confusion matrixes. For all the years investigated, the overall accuracies and the kappa coefficients were higher than 80%, with 2018 as the more accurate year. The analysis of LULCC revealed that forest decreased Citation: Kenea, U.; Adeba, D.; by 20.0% between the years 1994–2004, and it decreased by 11.8% in the following period 2004–2018.