Browsing by Author "Kakembo, Vincent,"

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    Comparison of extreme weather events and streamflow from drought indices and a hydrological model in River Malaba, Eastern Uganda
    (International Journal of Environmental Studies, 2013) Barasa, Bernard,; Kakembo, Vincent,; Mugagga, Frank; Egeru, Anthony
    The study examined the applicability of the Combined Drought Index (CDI), Standardized Precipitation Index (SPI) and IHACRES (identification of unit hydrographs and component flows from rainfall, evaporation and streamflow data) model in characterizing extreme weather events in relation to streamflow variations of the River Malaba. The results showed that the extreme weather events return period had reduced from 4–10 to 1–3 years over the catchment. The CDI was a better predictor of drought events (2005–2006) than the SPI, which was better for flood events (2006, 1997 and 2008) in the catchment. The performance of the IHACRES model with a Nash–Sutcliffe efficiency of 0.89 comparatively corresponded with the results obtained from the SPI and CDI drought indices especially during recorded events of severe drought (2005) and flood (1997). These results coincided with the La-Nina events that were recorded over the catchment and Uganda at large.