This work uses the ParFlow-CLM hydrological model and field observations to assess the hydrological effects of sustainable land management (SLM) methods, including micro-dams, in a Sahelian watershed in Niger. According to the findings, micro-dams improve water availability and drought resistance by significantly lowering runoff while raising infiltration, soil moisture, and groundwater recharge. The results show that in water-scarce Sahelian environments, physically based hydrological modeling is a useful tool for evaluating the advantages of land restoration schemes.