Reservoirs in Euskadi
8 reservoirs monitored
- Reservoirs
- 8
- Provinces
- Araba/Álava, Gipuzkoa/Guipúzcoa
- Basins
- Ebro, Cantábrico Oriental, Cuencas Internas del País Vasco
- Largest
- Ullivarri
Regional overview
The reservoirs of Euskadi stand this week at 62.9% of their capacity, holding 195 hm³ out of a total of 310 hm³.
The regional reserve fell by 2 hm³ compared with the previous week.
The reservoirs of Euskadi are currently at 62.9%, holding 195 hm³ of water out of a total capacity of 310 hm³. In the latest weekly update the regional water reserve fell by 2 hm³. Compared with the same week of 2025: below (-6.8 points). Compared with the 10-year mean: below (-5.8 points). Among the best-supplied reservoirs is Sobrón, while Añarbe is among the lowest levels. Here you can review the trend, the related basins and the detail of each reservoir in the region.
Reference levels
Previous week63.5 %-0.6 pts
Same week 202569.7 %-6.8 pts
10-year mean68.7 %-5.8 pts
Reservoirs by province
Araba/Álava·4 reservoirs·63.0% full
Reservoir / basinCapacityStored waterCurrent levelWeekly change
AlbiñaEbro5 hm³3 hm³60.0 %0 hm³SobrónEbro20 hm³17 hm³85.0 %+1 hm³UllivarriEbro146 hm³91 hm³62.3 %-1 hm³UrrunagaEbro72 hm³42 hm³58.3 %-1 hm³Gipuzkoa/Guipúzcoa·4 reservoirs·62.7% full
Reservoir / basinCapacityStored waterCurrent levelWeekly change
AñarbeCantábrico Oriental38 hm³21 hm³55.3 %-1 hm³Ibai-EderCuencas Internas del País Vasco11 hm³7 hm³63.6 %0 hm³IbiurCantábrico Oriental8 hm³6 hm³75.0 %0 hm³UrkuluCuencas Internas del País Vasco10 hm³8 hm³80.0 %0 hm³