Formation of the “Projeto Rios”. The “Projeto Rios” is an Iberian project coordinated, at national level, by the Portuguese Association of Environmental Education (ASPEA) and which encourages the adoption of 500 meter sections of rivers or streams by organized local groups. Using a simple but rigorous observation methodology that is easy to apply and develop, the groups assume responsibility for monitoring and protecting the chosen section, thus contributing to the environmental improvement of water resources in general and to promoting improvement actions of the section, in particular.