empty riverbed

Volume of water falls in 10 river basins; rises in two

West Algarve basin has lowest amount of water stored overall

The volume of water stored fell at the end of April in 10 river basins and rose in two, compared to the previous month, according to data from the National Water Resources Information System (SNIRH).

Of the 60 reservoirs monitored, 35 had water availability greater than 80% of the total volume and six less than 40%.

At the end of April, the western Algarve basin, with 13.3%, had the lowest amount of water stored overall, as has been the case for over a year.

The average storage for the month of April in the western Algarve basin was 76.5%, according to the SNIRH.

The basins of Mira (35.7%) and Arade (39.6%) also had less water available.

The basins of Ave (86.9%), Tejo (86.1%), Douro (85.2%), Mondego (83.5%), Cávado (83.3%), Lima (82.2%), Guadiana (81%), Oeste (77.2%) and Sado (60.1%) had the highest levels.

The April 2023 storages by river basin were higher than the April storage averages (1990/91 to 2021/22), except for the basins of Mondego, Sado, Guadiana, Mira, Ribeiras do Algarve and Arade.

Each hydrographical basin may correspond to more than one reservoir.