A very important step in the complex process of environmental reconstruction is to ensure the flow of environmental protection along water courses (flow protection of aquatic ecosystems) and the minimum flow required in any section of a watercourse river, to ensure natural conditions of life of existing ecosystems and future.
In this context, the paper aims to present some of hydromorphological requirements, including compliance protection flow of aquatic ecosystems, which the water courses must meet in order to achieve requirements established by the Framework Directive 60/2000/CEE for the good ecological status of water bodies. | 
