Fervenza reservoir

A Coruña · Galicia

Galicia Costa basin Reservoirs in GaliciaHydroelectric

Province: A Coruña
Basin: Galicia Costa
River: Xallas
Dam: Gravity · 1966

35.9%

Current level

37 hm³

Stored water

103 hm³

Total capacity

-1.0 hm³

Weekly change

0.0 hm³

Vs. 2025

-3.5 hm³

Vs. 10-year mean

Historical trend

Stored water volume · hm³

hm³

Weekly summary

The Fervenza reservoir (embalse de Fervenza), in the Galicia Costa basin and linked to Dumbría, Vimianzo, Zas y Mazaricos, A Coruña and Galicia, is at 35.9% of its capacity, holding 37 hm³ against a maximum capacity of 103 hm³. It is currently falling, by 1.0 hm³ this week.

Compared with 2025: in line with that level. Compared with the recent historical mean: below (-3.4 points).

Its main uses include water supply and hydroelectric power.

References
Reference	Level	Difference
Previous week	36.9%	-1.0 pts
Same week 2025	35.9%	0.0 pts
10-year mean	39.3%	-3.4 pts

Technical data

Characteristics of the dam and its recorded uses.

Characteristics

Municipality: Dumbría, Vimianzo, Zas y Mazaricos
River: Xallas
Dam type: Gravity
Year built: 1966
Surface area: 1,250 ha
Upstream: — no data
Downstream: Santa Eugenia

Recorded uses

Water supply
Electricity

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

Source: MITECO Inventory of Dams and Reservoirs.

Data: MITECO · AEMET