Schéma directeur d'aménagement et de gestion des eaux
Encyclopedia
In France
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

, the schéma directeur d'aménagement et de gestion des eaux (SDAGE) aims to put into effect the principles of the law of 3 January 1992 on the level of the major hydrographic
Hydrography
Hydrography is the measurement of the depths, the tides and currents of a body of water and establishment of the sea, river or lake bed topography and morphology. Normally and historically for the purpose of charting a body of water for the safe navigation of shipping...

 basins
Drainage basin
A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit of the basin, where the waters join another waterbody, such as a river, lake, reservoir, estuary, wetland, sea, or ocean...

. In translation, its name is outline for the organization of the development and management of water resources.

Rationale

Water
Water
Water is a chemical substance with the chemical formula H2O. A water molecule contains one oxygen and two hydrogen atoms connected by covalent bonds. Water is a liquid at ambient conditions, but it often co-exists on Earth with its solid state, ice, and gaseous state . Water also exists in a...

 is a part of the nation's common heritage. Its protection, exploitation and setting into a usable state while respecting natural balances, are of general interest.

The use of water belongs to all, within the framework of laws and regulations as well as of rights already established.

The law

The law of 3 January 1991 is like a United Kingdom
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 Act of Parliament
Act of Parliament
An Act of Parliament is a statute enacted as primary legislation by a national or sub-national parliament. In the Republic of Ireland the term Act of the Oireachtas is used, and in the United States the term Act of Congress is used.In Commonwealth countries, the term is used both in a narrow...

. The main subjects addressed by the SDAGE are written into the law:
  • preservation of aquatic ecosystems, their sites and wetland
    Wetland
    A wetland is an area of land whose soil is saturated with water either permanently or seasonally. Wetlands are categorised by their characteristic vegetation, which is adapted to these unique soil conditions....

    s,
  • protection against any pollution
    Pollution
    Pollution is the introduction of contaminants into a natural environment that causes instability, disorder, harm or discomfort to the ecosystem i.e. physical systems or living organisms. Pollution can take the form of chemical substances or energy, such as noise, heat or light...

     and restoration
    Water purification
    Water purification is the process of removing undesirable chemicals, materials, and biological contaminants from contaminated water. The goal is to produce water fit for a specific purpose...

     of the quality of the water,
  • development and protection of the resource as drinking water
    Drinking water
    Drinking water or potable water is water pure enough to be consumed or used with low risk of immediate or long term harm. In most developed countries, the water supplied to households, commerce and industry is all of drinking water standard, even though only a very small proportion is actually...

  • exploitation of water as an economic resource and sharing that resource.


The SDAGE scheme was drawn up together by the national, regional and département governments and is managed by the agence de l'eau (water agency).

How it works

The SDAGE serves as a general framework for the development and management of the water of each hydrographic unit, system or aquifer
Aquifer
An aquifer is a wet underground layer of water-bearing permeable rock or unconsolidated materials from which groundwater can be usefully extracted using a water well. The study of water flow in aquifers and the characterization of aquifers is called hydrogeology...

). These are the schémas d'aménagement et de gestion des eaux (SAGE), that is water resource development and management outlines.

The aquifer and the hydro-electric and recreational uses of water in the Ain
Ain River
The Ain is a river in eastern France. In the Franco-Provençal language it is known as the En.-Global position:The river rises at an altitude of some 700 metres, near the village of La Favière, in the Jurassic limestone of the southern end of the Jura mountains and flows into the Rhône about 40...

 valley compose a clear example of a site where a coordinated approach could be productive. However, the schéma is flexible enough to include specific needs as for example, that of Artois
Artois
Artois is a former province of northern France. Its territory has an area of around 4000 km² and a population of about one million. Its principal cities are Arras , Saint-Omer, Lens and Béthune.-Location:...

-Picardie
Picardie
Picardy is one of the 27 regions of France. It is located in the northern part of France.-History:The historical province of Picardy stretched from north of Noyon to Calais, via the whole of the Somme department and the north of the Aisne department...

 which is concerned specifically with the former mining basin of the Nord and Pas-de-Calais départements and the consequences of past and current exploitation of the région's coal
Coal
Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure...

.

External links

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