Hydro-meteorological analysis in the wetlands and lakes of the Volta River basin in West Africa

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The utility of reanalysis and global precipitation datasets was examined for hydro-meteorological analysis in the wetlands and lakes of the Volta River basin. Various meteorological patterns were used as input data for a hydrologic and a river flow models, and river flows were simulated. Results indicate that the combination of GPCP precipitation and ERA evaporation produced the most accurate flows. In addition, the results for the GPCP precipitation and ERA evaporation were better than those for the combination of observed precipitation and ERA evaporation. This demonstrates that the combination of GPCP precipitation and ERA evaporation data is very useful for water balance analysis in un-gauged basins.