Valuing investments in sustainable land management in the Upper Tana basin, Kenya provides a case study of valuing ecosystem services using the InVEST model (of the Natural Capital Project) to assess the multiple benefits of land management practices in a large, diverse watershed. This study provides detailed analysis of targeted interventions that take into account stakeholder preferences, local environmental and socio-economic conditions. The outputs of the model link biophysical outputs to monetary metrics, including reduced water treatment costs, increased hydropower production, and crop yield benefits.