The subject of the present study is the local social movements that develop opposing the sitting of an infrastructure or development project. It mainly focuses on the study and analysis of the example of Vovousa, where according to a proposed project, a part of the water flow of Aoos River which flows through the village of Vovousa will be pumped from an upflow point to the nearby lake of Pigon Aoos hydroelectric plant, rising strong opposition from the local community. The proposed project is presented and studied in terms of both techno-economic and social impact. For the study of the social procedures that take place during the creation and the evolution of the social movement, a combined methodology was used. A series of semi-structured interviews both from key persons and simple residents was conducted, while in the same time a systematic observation and recording of any related actions was ensured. Taking part in various procedures of the movement like assemblies, events and info conferences was also part of the studying process. The results of the research indicate that the social movement of Vovousa is not a NIMBY (Not In My BackYard) movement but a mature social movement, with political goals, clear arguments and wide acceptance by the society, locally as well as nationally.