While the summer has not even started, the situation this year is already “quite exceptional”, commented Violaine Bault, hydrogeologist at BRGM. Because the groundwater situation has already deteriorated in the spring, due to a “very dry” spring. And the heavy rains in May did not reverse the trend.
It had been three months since it rained. All the water was used to moisten the soil and feed the vegetation, very little water reached the groundwater.
Violaine Bault, hydrogeologist at the Geological and Mining Research Office
As Météo-France forecasts for June-July-August temperatures above normal for the majority of France and less rain than normal, the summer of 2021 is also likely to be the scene of a new drought, like the four previous years.
“Very high” risk for the slicks of Alsace and the corridors of the Saône and the Rhône
Thus, the BRGM has classified the water tables of the Alsace plain, the corridors of the Saône and the Rhône, and the Mediterranean coast as a “very high” risk of drought. Many other aquifers are at “high” risk, especially in Brittany and in the center of the country.
Last summer, nearly 90 departments issued orders imposing restrictions on water use.
On the other hand, the risk is low to very low in the Paris Basin and in the Aquitaine Basin.
“That does not necessarily mean that there will be drought decrees, but we suppose so,” commented Violaine Bault.