Barrie de la Maza reservoir

A Coruña · Galicia

Galicia Costa basin Reservoirs in GaliciaHydroelectric

Province: A Coruña
Basin: Galicia Costa
River: Tambre
Dam: Gravity · 1958

32.3%

Current level

10 hm³

Stored water

31 hm³

Total capacity

0.0 hm³

Weekly change

+2.0 hm³

Vs. 2025

-0.7 hm³

Vs. 10-year mean

Historical trend

Stored water volume · hm³

hm³

Weekly summary

The Barrie de la Maza reservoir (embalse de Barrie de la Maza), in the Galicia Costa basin and linked to Negreira y Brión, A Coruña and Galicia, is at 32.3% of its capacity, holding 10 hm³ against a maximum capacity of 31 hm³. It is currently steady in the latest update.

Compared with 2025: above (+6.4 points). Compared with the recent historical mean: below (-2.3 points).

Its main uses include water supply and hydroelectric power.

References
Reference	Level	Difference
Previous week	32.3%	0.0 pts
Same week 2025	25.8%	+6.4 pts
10-year mean	34.5%	-2.3 pts

Technical data

Characteristics of the dam and its recorded uses.

Characteristics

Municipality: Negreira y Brión
River: Tambre
Dam type: Gravity
Year built: 1958
Surface area: 270 ha
Upstream: Villagudín
Downstream: No

Recorded uses

Water supply
Electricity
Fishing
Boating

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

Source: MITECO Inventory of Dams and Reservoirs.

Data: MITECO · AEMET