Of the 60 monitored reservoirs, 11 had water availability greater than 80% of the total volume and 19 less than 40%.
According to SNIRH data available today, at the end of August the Barlavento (8.4%), Sado (21.8%), Arade (28.6%) and Mira (31.8%) basins had the least water availability.
The Lima basin had the largest volume of water, 86.3% of its capacity, followed by the Douro (79.6%), Cávado (78.7%) and Ave (76.9%).
August 2023 storages by river basin were generally higher than the August storage averages (1990/91 to 2021/22), except for the Sado, Guadiana, Mira, Ribeiras do Algarve and Arade basins.
Each river basin may correspond to more than one reservoir.