National water reserveSource: MITECOUpdated 20 Oct 2026

Reservoir levels in Spain

Official data on Spain's national water reserve.

Panoramic view of a mountain reservoir with calm water

Current reserve: 57.20%; 375 reservoirs in the bulletin
Stored water: 32,062hm³; of 56,049 hm³ capacity
Weekly change: −352hm³; since 13 Oct 2026
Same week of 2025: 53.1%; Now +4.1 pts
10-year mean: 42.9%; Now +14.3 pts

10-year mean2025

0254055708090100%

Interactive map and comparison

Data by autonomous community and national trend

Source: MITECO · Updated 20 Oct 2026

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Select an autonomous community to see its details52 weeks

What is happening this week

Weekly context for the national water reserve

Spain's reservoirs are currently 57.2% full, holding 32,062 hm³ of water out of a total capacity of 56,049 hm³ across 375 reservoirs. In the latest weekly update, the national water reserve fell by 352 hm³.

Compared with the same week of 2025: above (+4.1 points). Compared with the 10-year mean: above (+14.3 points). The basins holding the most water include Guadalete-Barbate and Cuencas Internas de Cataluña, while Ebro and Duero are among the lowest.

Weekly change: −352hm³
Against the same week of 2025: +4.1pts
Against the 10-year mean: +14.3pts
Basins with the most water: Guadalete-Barbate74.6%
Cuencas Internas de Cataluña73.0%
Lowest basins: Ebro44.9%
Duero46.5%