Ministerio para la Transición Ecológica y el Reto Demográfico

Spanish water resources and reservoir monitoring

Ministerio para la Transición Ecológica y el Reto Demográfico is the government department or statistical office for Spain. It publishes the weekly Boletín Hidrológico giving reservoir storage for every major Spanish reservoir, the national hydrological plans, abstraction and irrigation statistics, and drought management plans by basin authority.

Open — attribution requiredIn useFree

Rights

Licence: Spanish public sector reuse (Ley 37/2007)
Commercial reuse: Yes
Redistribution: Yes
Derivative use: Yes
Attribution required: Yes
Data from Ministerio para la Transición Ecológica y el Reto Demográfico, used under Spanish public sector reuse (Ley 37/2007).
Terms last checked: 23 August 2026

Access and coverage

Publisher: Ministerio para la Transición Ecológica y el Reto Demográfico
Website: https://www.miteco.gob.es/es/agua.html
Geographic coverage: Spain
Temporal coverage: 1988 onwards
Update frequency: weekly
Formats: csv, pdf, xlsx
Bulk download: Available
Registration required: No
Cost to Hydrionis: Free
Domains: reservoir, drought, withdrawal, river flow

Notes

Spain publishes reservoir storage weekly for hundreds of reservoirs, which makes it one of the best open records of drought development anywhere in Europe.