The continuously rising water abstraction from rivers and lakes to fulfill urban, agricultural, industrial etc. requirements leads to the deterioration or destruction of fluvial or lacustrine ecosystems, especially when the needs of water ecosystems are not taken into account.
Ιn Greece, even though it has been recognized that the fulfillment of water needs of fluvial and lacustrine ecosystems constitutes an ethical and legal obligation, the procedures to quantify these needs, however, have barely been forwarded. Obviously, the quantification should be based on research and observation data of hydrological, ecological and other parameters of the river or lake.
Since the early 2000s, the determination of minimum water flow and water level – for rivers and lakes, respectively – is an obligation of all EU member states, according to the Directive 2000/60. Greece harmonizes the Directive with the Law 3199/2003.
Recently, the necessity to determine the minimum water flow and level in Greek rivers and lakes is specified in particular measures in almost all River Basin Management Plans, which have been prepared for each Water District.
The project «Improving the knowledge in determining the minimum water level and flow of water bodies» targets to the determination of minimum water level / flow of the water bodies of Lakes Zazari, Cheimaditida, Petron, Vegoritida and Nestos River that will enable the conservation of ecosystems and promote sustainable development.
The project is included in the programme area «GR02 – INTEGRATED MARINE AND INLAND MANAGEMENT» and co-funded from the European Economic Area Financial Mechanism 2009-2014 by 85% and from the Public Investment Program by 15%.