The Social Movement in Defense of Sogamoso and Chucuri rivers, today constitutes a benchmark for the social movement, whose participation is mainly municipalities affected by the construction of Sogamoso Hydroelectric Power Plant but known as HIDROSOGAMOSO. The movement is the result of a social and ethnographic process of development building that takes into account community participation and the importance of maintaining and strengthening environmental policies for sustainable development. The participation the movement has had during the recent years in regional scenarios, lead me to systematize the experience of the Social Movement in Defense of the Sogamoso and Chucuri Rivers, with the purpose of investigating the importance of collective memory processes in the consolidation and strengthening of social processes. The results obtained from the research, give clear indications that collective memory constitutes an indispensable tool in the construction of the identity of social actors, endowed with recognition and visibility through reports from those affected. This time, it promoted new stages of participation, where, through historical narratives, the demands of the communities are recognized and in this way the construction of peace in the territory and the strengthening of the country's social culture are made visible.