Eco-hydraulics studies the interactions between the hydraulic phenomena of the landscape and ecosystems dynamics. It is a very recent branch of hydraulics, and it will surely bring to future scientific development and important technical relapses. The case of the fluvial environment is emblematic. It is one of the most precious, biodiversity-rich and often unique natural sites of our plains. For this reason it is fragile and constantly threatened. Ecologists highlighted how the biologic dynamics of this ecosystem strongly depends on hydraulic forcing, such as discharge stochasticity, sediment transport, water flow field, riparian aquifers configuration, hyporheic fluxes and the transport processes of nutrients and chemicals. In turn, the ecosystem has a lot of different effects on the hydraulic and morphologic characteristics of rivers. For example riparian vegetation, whose spatio-temporal dynamics is becoming more and more important to understand different morphodynamic processes.

In this picture, the knowledge of physical phenomena and the mathematical modeling make  Hydraulics a key discipline to collaborate with ecologists and geochemicals in order to formulate quantitative bio-morphodynamic and bio-geochemical models of the fluvial environment.