The study addresses the state of water resources of the upper Tempisque Watershed located in the Province of Guanacaste, Costa Rica.A brief biophysical description of the study area as well as detailed accounting of availability and use of water resources is provided. It was found that before 2005, water concessions plus the recommended environmental flow requirements for this river exceeded the availability of natural flows during the dry season.A series of recommendations are given in order to maintain environmental flows, avoid social conflict sand meet the water demands of communities,agricultural investors, tourism and real estate developments.
