The reservation by areas is as follows:
- Eastern Cantabrian is 87.7%
- Western Cantabrian 80.7%
- 79.0% Miño-Sil
- Galicia Costa 86.0%
- Internal basins of the Basque Country at 90.5%
- Duero 54.8%
- 36.3% cut
- Guadiana at 37.5%
- Red, Odiel and Stones 64.2%
- 45.5% Guadalete-Barbate
- Guadalquivir at 36.2%
- Andalusian Mediterranean Basin at 48.0%
- 27.8% safe
- Juice at 36.2%
- Ebro at 68.3%
- Inland basins of Catalonia at 62.5%
Rainfall has been abundant in the Mediterranean slope and scarce in the Atlantic slope. The maximum has been produced in Castellón with 145.0 mm (145.0 l / m²).
The situation of the basins, in cubic hectometers, is detailed in the following table:
Ministry for Ecological Transition