Impacts of land use and land cover changes on peakdischarge and flow volume in kakia and esamburmbur sub-catchments of narok town, kenya

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Abstract

Due to population growth and an expanding economy, land use/land cover (LULC) change is continuously intensifying and its effects on floods in Kakia and Esamburmbur sub-catchments in Narok town, Kenya, are increasing. This study was carried out in order to evaluate the influence of LULC changes on peak discharge and flow volume in the aforementioned areas. The EventBased Approach for Small and Ungauged Basins (EBA4SUB) rainfall–runoff model was used to evaluate the peak discharge and flow volume under different assumed scenarios of LULC that were projected starting from a diachronic analysis of satellite images of 1985 and 2019. EBA4SUB simulation demonstrated how the configuration and composition of LULC affect peak discharge and flow volume in the selected catchments. The results showed that the peak discharge and flow volume are affected by the variation of the Curve Number (CN) value that is dependent on the assumed LULC scenario. The evaluated peak discharge and flow volume for the assumed LULC scenarios can be used by local Municipal bodies to mitigate floods.

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Umukiza, E., Raude, J. M., Wandera, S. M., Petroselli, A., & Gathenya, J. M. (2021). Impacts of land use and land cover changes on peakdischarge and flow volume in kakia and esamburmbur sub-catchments of narok town, kenya. Hydrology, 8(2). https://doi.org/10.3390/hydrology8020082

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