Mauritania is one of the Sahelian’s countries most vulnerable to the climate changes, which moreover starts to feel little by little especially in the field of the environment : Drought, desertification, flood, land degradation, soil erosion by water and wind, invasion of the locusts …

In Mauritania both of the environmental dimension and sustainable development belong to the main components already identified as a governmental priority.

In another hand Mauritania has enormous potentialities in term of biodiversity. But this one is threatened of disappearance because of the negative effects of the dryness and desertification. To defeat this threat, many measurements were taken for safeguarding the ecosystem and resulted to the creation of the protected areas: National park of Ban d’ Arguin (NPBA) and the national park of Diawling (NPD).

The implementation of the plans of management of these two parks contributes to the reconstitution of the biodiversity in their several and respective intervention zones.

Studies are currently committed for better knowing the impacts of these two parks on the socio-economic aspect and the environment.

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 The rain falls, infiltrates and supplies the underground tanks; It circulates through the vacuums, the cracks, the fractures and inside the various geological formations, formerly, having undergone tectonic undulations;
  The rain falls, streams and is spread out over all the ground, feeds human beings and is the source of development of all ecosystems. it 's feeds rivers,lacs, aquifers and goes finally into oceans; This scarce and unequal resource show us up to which level its presence is essential in all life and human activities; Water is a scarce resource, difficult to access, sometimes abundant but certainly badly managed; Water is a multi-purpose, resource thus requiring a coherent ,multilevel and interdisciplinary concept of management (Approach GIRE).
   To find water in sufficient quantity and good quality represent a big environmental challenge in which the world communities must invest. 
  A short overflight of the Millennium goals for the Development permit us, to better understand that for the majority of the cases, their achievement could not be possible without taking into consideration the hydrous component which is WATER.
In my viewpoint, The good and reliable practical application of the tools of an IWRM, if those take account of the need of societies in accordance with their cultural and social economic context, Would be more helpful to decrease poverty in the developing countries.
  In other hand the water must be managed on all levels (room, regional, national, international, basin)in order to reach a suitable development.