Arbón reservoir

Asturias · Asturias / Asturies

Cantábrico Occidental basin Reservoirs in Asturias / AsturiesHydroelectric

Province: Asturias
Basin: Cantábrico Occidental
River: Navia
Dam: Embankment, clay core · 1967

92.7%

Current level

38 hm³

Stored water

41 hm³

Total capacity

+2.0 hm³

Weekly change

+2.0 hm³

Vs. 2025

+0.9 hm³

Vs. 10-year mean

Historical trend

Stored water volume · hm³

hm³

Weekly summary

The Arbón reservoir (embalse de Arbón), in the Cantábrico Occidental basin and linked to Coaña, Villayon, Asturias and Asturias / Asturies, is at 92.7% of its capacity, holding 38 hm³ against a maximum capacity of 41 hm³. It is currently rising, by 2.0 hm³ this week.

Compared with 2025: above (+4.9 points). Compared with the recent historical mean: above (+2.2 points).

Its main uses include water supply and hydroelectric power.

References
Reference	Level	Difference
Previous week	87.8%	+4.9 pts
Same week 2025	87.8%	+4.9 pts
10-year mean	90.5%	+2.2 pts

Technical data

Characteristics of the dam and its recorded uses.

Characteristics

Municipality: Coaña, Villayon
River: Navia
Dam type: Embankment, clay core
Year built: 1967
Surface area: 270 ha
Upstream: Doiras
Downstream: No

Recorded uses

Water supply
Electricity
Fishing
Boating
Swimming

Not recorded: irrigation, industrial, picnic, restaurants.

Source: MITECO Inventory of Dams and Reservoirs.

Data: MITECO · AEMET