The reservation by areas is as follows:
- Cantábrico Oriental se encuentra al 87,7%
- Cantábrico Occidental al 61,2%
- Miño-Sil al 54,0%
- Galicia Costa al 67,0%
- Cuencas internas del País Vasco al 100,0%
- Duero al 54,2%
- Tajo al 48,0%
- Guadiana al 31,6%
- Tinto, Odiel y Piedras al 80,3%
- Guadalete-Barbate al 35,9%
- Guadalquivir al 30,5%
- Cuenca Mediterránea Andaluza al 43,9%
- Segura al 39,0%
- Júcar al 62,2%
- Ebro al 67,9%
- Cuencas internas de Cataluña al 57,8%
Rainfall has considerably affected the entire peninsula. The maximum has occurred in San Sebastián-Donostia with 65.5 mm (65.5 l/m²).
The situation of the basins, in cubic hectometres, is detailed in the attached table:
( Note: At the time of closure of these data, the data corresponding to the flows of Galicia-Costa and the Segura Hydrographic Confederation have not been received).