In several regions, the rivers are low, the recharging of the underground layers is late, and the floors remain dry. After the trauma of the summer of 2022, the discourse of the public authorities on the sharing of the resource seems to be inflated.
by Martine Valo
It is still too early to find out if France will know again a dry year, after that, historic, of 2022. But we can already see that the rains in recent weeks have not been enough to re -inflate Very numerous rivers that experience decreases of severe and late levels, particularly in Provence. They also do not allow to reassure on the state of the soil, nor on the level of underground reserves, worrying in several regions. Residents of a dozen departments are still prohibited to water their lawn and wash their car. The restrictions of use still in force at home have often been for more than six consecutive months. In early January, the north and south of Deux-Sèvres remain classified on a reinforced alert, as well as part of the Lozère, Haute-Garonne, Pyrénées-Orientales and Ain. Part of the lot is on alert; The whole Ille-et-Vilaine, Savoy and half of the Jura are placed in vigilance.
In Météo-France as in the geological and mining research office (BRGM), the observation is the same: overall, the layoff of the tablecloths arrives with a month and a half, even two months late. Not only is it not yet raining enough, but fall was abnormally hot. However, before reaching underground geological layers, precipitation must be able to infiltrate. The temperatures which remained exceptionally high after summer slowed down the rest of the vegetation, which continued to capture water until December. It is only at this time that the floors were able to gorge with humidity, in a way superior to normal in the Southeast and Brittany, but not in the old Languedoc-Roussillon region or in the center of the metropolis. In Allier, Creuse, Puy-de-Dôme, Haute-Vienne, the earth lacks water, as well as throughout the southwest quarter of the country.
“In these regions, the situation is comparable to what we usually know in early November, sums up Simon Mittelberger, climatologist at Météo-France. As for the snow, he is almost classic in the Southern Alps , a little lower in the Northern Alps, but very in deficit in the Pyrenees. However, this can change in January February, “he concluded cautiously. The situation could certainly straighten in the coming weeks, especially for reactive tablecloths. But in the instead of inertial -which take two or three months to recharge, as in the Paris basin for example -, “the levels will probably not go up above normal except exceptional rainfall this winter”, observes the BRGM.
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