Hydrolic work — Barriers to water flow in Loir-et-Cher

The problem of barriers to flow affects many areas (environmental ecology) aquatics, sustainable development and renewable energy production, navigation, safety public,...) and is of interest to many actors, who have built inventories or inventories for this purpose. databases, on various scales. These sources of information are most often heterogeneous. both by the nature of the data they provide, their codification, the structure of the databases associates and how they are managed. They each obey their own operating rules, and there was no centralising base in France, prior to the ROE, referencing all the obstacles at the disposal of the territory. From an ecological point of view, these works are at the origin of profound changes in the morphology, hydrology, physico-chemistry, and consecutively environmental biology aquatic (modification of aquatic communities, disruption of ecological processes) fundamentals, alterations in habitat diversity and quality, eutrophication, warm-up and evaporation of water, hindering the free movement of species and sediments...).