The prototype intends to help water managers in their decisions making to: 

1. Anticipate drought and maintain minimum rivers flows in Summer.
2. Ensure the refilling of reservoirs at the end of the Winter.
3. Adapt the management in Winter to possible flooding events at Spring while ensuring efficient low flows support in Summer and Autumn.

Behind these decisions, the major stakes concern fresh water supply and flood control over big metropolitan areas as Paris and irrigation for agriculture in sensitive regions as Garonne catchment.