Spanish Water Reserves at 83.5% Capacity
Summary
MITECO's weekly water reserve report dated 21 April 2026 shows Spanish reservoirs storing 46,802 hectómetros cúbicos (hm³), representing 83.5% of total national capacity. Reserves decreased by 118 hm³ (0.2% of total capacity) during the reporting period. Regional variation spans from 57.6% in the Segura basin to 95.2% in internal Basque Country basins, with precipitation described as scarce throughout Spain.
“Actualmente los embalses almacenan 46.802 hectómetros cúbicos de agua”
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What changed
MITECO published its weekly hydrological status bulletin showing Spanish water reserves at 83.5% of total capacity (46,802 hm³), representing a net decrease of 118 hm³ over the reporting period. The bulletin provides capacity percentages for 16 river basin districts, with the Segura basin notably the lowest at 57.6% and internal Basque Country basins the highest at 95.2%. Sparse precipitation was recorded nationally, with the maximum of 20.8 mm in Pontevedra. The bulletin also references a dedicated web dashboard application and weekly data file updates.
This report serves as a reference document for water resource planning and environmental monitoring rather than imposing any compliance obligations. Water management authorities, agricultural irrigation districts, energy producers dependent on hydroelectric generation, and environmental advocacy groups may use this data for operational planning and resource allocation decisions.
Archived snapshot
Apr 23, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
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La reserva hídrica española se encuentra al 83,5 % de su capacidad
Estado de los Embalses
21/04/2026 Actualmente los embalses almacenan 46.802 hectómetros cúbicos de agua
La reserva hídrica española está al 83,5 % de su capacidad total. Los embalses almacenan actualmente 46.802 hectómetros cúbicos (hm³) de agua, disminuyendo durante este período en 118 hm³ (el 0,2 % de la capacidad total de los embalses).
La reserva por ámbitos es la siguiente:
- Cantábrico Oriental al 91,8%
- Cantábrico Occidental al 84,9%
- Miño-Sil al 87,5%
- Galicia Costa al 85,1%
- Cuencas internas del País Vasco al 95,2%
- Duero al 87,3%
- Tajo al 79,7%
- Guadiana al 86,6%
- Tinto, Odiel y Piedras al 88,2%
- Guadalete-Barbate al 90,6%
- Guadalquivir al 87,2%
- Cuenca Mediterránea Andaluza al 76,7%
- Segura al 57,6%
- Júcar al 68,2%
- Ebro al 83,9%
- Cuencas internas de Cataluña al 91,0% Las precipitaciones han sido escasas en toda España. La máxima se ha producido en Pontevedra con 20,8 mm (20,8 l/m²).
La situación de las cuencas, en hectómetros cúbicos, se detalla en el cuadro adjunto:
Esta información está también disponible de forma más visual en la nueva aplicación web del MITECO. Además, todas las semanas se actualiza en este apartado el fichero BD-Embalses_1988-2022.zip, que incluye una tabla con los datos de los embalses peninsulares con capacidad superior a 5 hm³ desde 1988.
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