ChiroRivers is the monitoring program of bats in aquatic ecosystems. It was launched experimentally in 2007, and its definitive protocol was established in 2008. It represents a simple monitoring program, adapted from the British Waterway Survey(Bat Conservation Trust, UK) which is the long-term survey that started in mid 1990s. Through the monitoring of bat populations along the rivers, we can detect changes in the ecological quality of water and riparian forests! If is essential to maintain this monitoring for many years in order to infer changes in these bat populations and river courses.