Understanding the impact of land use/land cover (LULC) and climate patterns on basin runoff is necessary in assessing basin water stress. This assessment requires long-term observed rainfall time series and LULC spatial data. In order to assess the potential water stress, the study used long-term (1981–2007) rainfall data to drive the Pitman monthly rainfall–runoff model to assess changes in runoff for three selected basins: Asa, Ogun and Owena. In spite of the limitations in the availability of spatio-temporal hydro-meteorological data, the model results revealed commensurate increase in the runoff coefficient with decreases in forest cover between 1981 and 2000. Low runoff coefficients of 5.3%, 12.0% and 6.4% were recorded for Asa, Ogun and Owena basins based on C-CAM projection of low rainfall for 2010–2050. These indicated that in the future, water stress in Asa and Owena basins would be much higher, when compared with Ogun basin.
Reference:
Amidu, A, Evison, K, Alabi, S, Sjith, V and Jimmy, A. 2013. Assessing the impact of land use/land cover and climate changes on water stress in the derived savanna. In: Proceedings of H01, IAHS-IAPSO-IASPEI Assembly, Gothenburg, Sweden, 22-26 July 2013
Amidu, A., Evison, K., Alabi, S., Sjith, V., & Jimmy, A. (2013). Assessing the impact of land use/land cover and climate changes on water stress in the derived savanna. http://hdl.handle.net/10204/7892
Amidu, A, K Evison, S Alabi, V Sjith, and A Jimmy. "Assessing the impact of land use/land cover and climate changes on water stress in the derived savanna." (2013): http://hdl.handle.net/10204/7892
Amidu A, Evison K, Alabi S, Sjith V, Jimmy A, Assessing the impact of land use/land cover and climate changes on water stress in the derived savanna; 2013. http://hdl.handle.net/10204/7892 .
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