@article{fdi:010090732, title = {{A}vailability of the current and future water resources in {C}entral {A}frica, case of the large {S}anaga catchment in {C}ameroon}, author = {{E}bod{\'e}, {V}. {B}. and {D}zana, {J}. {G}. and {O}ngu{\'e}n{\'e}, {R}. and {D}ongu{\'e}, {S}. {B}. and {K}offi, {B}. and {R}iotte, {J}ean and {M}ah{\'e}, {G}il and {B}raun, {J}ean-{J}acques}, editor = {}, language = {{ENG}}, abstract = {{S}tudy region: {M}bakaou and {B}amendjing basins ({S}anaga {R}iver sub-basins). {S}tudy focus: {I}n this study, the availability of water resources was assessed over the period 2002 - 2019, based on the {SWAT} ({S}oil and {W}ater {A}ssessment {T}ool) hydrological model and certain meteorological and spatial reference data available for the region ({M}erra2, {L}andsat, etc.). {F}orecasts of its evolution were then made with the same tool ({SWAT}) over two futures periods (near 2024 - 2035 and medium: 2036 - 205) based on data from four (04) regional climate models ({RCM}s) ({CCC}ma, {HIRHAM}5, {RCA}4 and {REMO}) and future land use and land cover ({LULC}) data simulated using the {CA}-{M}arkov procedure. {T}o separate the impact of climate variability ({CV}) and land use and use and land cover changes ({LULCC}s) on future water resources, two evolution scenarios (experiments) were established: (1) the impact of the {CV}, by associating future climate data with {LULC} from the historical period; (2) the impact of {LULCC}s, by combining future {LULC} maps with climate data from the historical period. {N}ew hydrological insights for the region: {T}he performances of the {SWAT} model are satisfactory in calibration and validation on the two basins with {R} 2 , {NSE} and {KGE} greater than 0.68. {T}wo models ({CCC}ma and {REMO}) predict a decline in water resources in these basins, and two others ({HIRHAM}5 and {RCA}4) the opposite. {T}he {REMO} model seems the most reliable. {I}t predicts a drop in precipitation and runoff ({SURQ}) in the two basins that do not respectively exceed - 19% and - 31%. {CV} is the only forcing whose impact will be visible in the dynamics of future water resources, given the insignificant changes expected in the evolution of {LULC} patterns. {T}he results of this study could contribute to improving the management of water resources in the studied basins and the region.}, keywords = {{C}entral {A}frica ; {S}anaga {R}iver basin ; {SWAT} ; {R}egional climate models ; {C}limate variability ; {L}and use and land cover changes ; {CAMEROUN}}, booktitle = {}, journal = {{J}ournal of {H}ydrology : {R}egional {S}tudies}, volume = {53}, numero = {}, pages = {101815 [23 ]}, year = {2024}, DOI = {10.1016/j.ejrh.2024.101815}, URL = {https://www.documentation.ird.fr/hor/fdi:010090732}, }