Añarbe reservoir

Gipuzkoa/Guipúzcoa · Euskadi

Cantábrico Oriental basin Reservoirs in Euskadi

Province: Gipuzkoa/Guipúzcoa
Basin: Cantábrico Oriental
River: Añarbe
Dam: Gravity · 1976

52.6%

Current level

20 hm³

Stored water

38 hm³

Total capacity

-1.0 hm³

Weekly change

-8.0 hm³

Vs. 2025

-8.8 hm³

Vs. 10-year mean

Historical trend

Stored water volume · hm³

hm³

Weekly summary

The Añarbe reservoir (embalse de Añarbe), in the Cantábrico Oriental basin and linked to Arano, Gipuzkoa/Guipúzcoa and Euskadi, is at 52.6% of its capacity, holding 20 hm³ against a maximum capacity of 38 hm³. It is currently falling, by 1.0 hm³ this week.

Compared with 2025: below (-21.0 points). Compared with the recent historical mean: below (-23.2 points).

Its main uses include water supply and hydroelectric power.

References
Reference	Level	Difference
Previous week	55.3%	-2.6 pts
Same week 2025	73.7%	-21.0 pts
10-year mean	75.8%	-23.2 pts

Technical data

Characteristics of the dam and its recorded uses.

Characteristics

Municipality: Arano
River: Añarbe
Dam type: Gravity
Year built: 1976
Surface area: 201 ha
Upstream: — no data
Downstream: No

Recorded uses

Water supply
Electricity

Not recorded: irrigation, industrial, fishing, boating, swimming, picnic, restaurants.

Source: MITECO Inventory of Dams and Reservoirs.

Data: MITECO · AEMET