Conséquence de la sécheresse sur l'alimentation en eau potable. Aspect quantitatif

Consequences of the drought on supply of drinking water. Quantitative aspect

Compagnie générale des eaux, Paris

Abstract

The drought of 1976 was felt particularly hard in the west of France. In these regions where underground nappes are rare, the water services are mainly supplied from waterways or reservoirs created for this purpose. We will examine the effect of drought on supplies for the main towns in the west and on the different sized services of this region, according to whether they are supplied by surface water or underground water. Since the drought led to shortages of supplies, we will examine the steps taken firstly to reduce demand: restriction of needs, prevention of waste, regulatory measures, then how to find emergency supplies, or transport by temporary channels or by road. Finally we will draw some conclusions for future installations.