Designing ecotourism areas in the reservoir area requires a multidisciplinary approach to identifying strategic variables that will determine its success. This study aims to determine the most influential variables in the development of the Kedung Ombo reservoir ecotourism area. The group discussion agreed that there are 33 variables that must be considered in the development of the Kedung Ombo ecotourism area with typology as follows: Input Variables, consisting of: regulation, integration with surrounding land use local awareness of tourism, infrastructure, local entrpreneurship ability, potential of tourism market, tourism actraction, economic potential of tourism business, and community involvement; Relay Variables, consisting of: policy for special permit for invenstment, retribution policy, tax policy, allowance policy, tourism promotion, apparatus role, governance, private investment, and coordination; 3) Autonomous Variables, consisting of: climite, security, natural beauty, developer anderstanding of local norms, potential conflict, and accesibilty. 4) Results Variables, consisting of: fund for community, preservation of local wisdom, employment expansion, forest preservation, concervation of reservoir function, improvement of welfare , and reduction of poverty. The results of this study will be a rich source of information for policy makers in the Kedung Ombo reservoir in developing it as a sustainable ecotourism area.