On the last day of November and in relation to the last day of the previous month, there was an increase in the volume stored in five river basins and a drop in seven, according to SNIRH.

Of the 60 monitored reservoirs, 11 had water availability greater than 80% of the total volume and 12 had availability below 40%.

At the end of November, the river basin of the Barlavento Algarve continued to be the one with the least reserves at 12.6%, the same value as at the end of October. The average for the month of November in this river basin is 55.1%.

According to data from SNIRH, the Arade basin with 30.4%, Mira with 37%, Lima with 50.6% and Ave with 58.8%, are those that retain the least water.

On the last day of November, the basins of Guadiana (77.8%), Mondego (74.6%), Douro (71.7%), Oeste (70.7%), Cávado (69.5%) and Tagus (66.9%) were those with the highest volume of water.

Each river basin may correspond to more than one reservoir.