Tourism development requires supporting water resources, yet often lacks sufficient hydrogeological knowledge to guide water management and development steps. The Government of Haiti (GOH) has identified tourism as a strategic initiative to stimulate growth of the national economy and has targeted the southwest coast of Haiti based on its beaches, mountains, and tourism potential. Initial planning for a proposed 5,590 ha eco-tourism zone in the region led the Haiti Ministry of Tourism and International Financial Institutions to evaluate water resources and water security to determine the feasibility of supplying 5,300 m3/day of water from a locally known aquifer with current agricultural and domestic demands. Aquifer characterization and groundwater modeling led to the determination that the Bwa Dom aquifer could not sustainably support the integrated demands of the proposed eco-tourism zone and existing irrigation and domestic demands. The technical analysis led to the creation of alternative development concepts more integrated with the regional hydroscape, thereby preserving renewable resources to enable the growth of the local agricultural economy in parallel with eco-tourism development.