FLOODIS will provide accurate location based application for portable devices. The proposed solution closes a critical gap for disaster management teams, civil protection, field/emergency response units to better address and mitigate crisis situations arising before, during, and after heavy flooding. The project will provide an open-source, location based smart phone application for the general public to enable the capacity for individuals to take pre-cautionary actions, therefore vastly reducing the likelihood of human and economic loss. The project will also consider rescuers relying on professional terminals and legacy communication channels. FLOODIS will combine Earth Observation and GNSS (GPS, Galileo, EGNOS/EDAS) technologies to deliver alerts and interactive maps on flooding risk/events to users in the geographical area at risk. A key and innovative capability of the system will be the ability of the user to send back actual information about the situation “on field” to a remote gateway for ingestion and subsequent dissemination to all other users. As such, it will serve to provide up-to-date, local information to disaster management centres, civil protection agencies, emergency response units, as well as affected citizens.The system will be tested on field in cooperation with some Civil Protection Agencies. The wider scope of the proposed service is to act as a precursor for maximising accessibility of environmental and security related information through location-based dissemination. In terms of business prospects, the market potential of FLOODIS arises by itself. As the flood risk in Europe increases, several organisations responsible for disaster management make great efforts to improve crisis management by investing in communication and information technologies to reduce floods damages. Being a synoptic and interactive location based information system, FLOODIS is expected to impact on greatly on disaster preparedness and damage/accident reduction.