Bao reservoir

Ourense · Galicia

Miño - Sil basin Reservoirs in GaliciaHydroelectric

Province: Ourense
Basin: Miño - Sil
River: Bibey
Dam: Gravity · 1960

81.1%

Current level

193 hm³

Stored water

238 hm³

Total capacity

-8.0 hm³

Weekly change

-21.0 hm³

Vs. 2025

+43.1 hm³

Vs. 10-year mean

Historical trend

Stored water volume · hm³

hm³

Weekly summary

The Bao reservoir (embalse de Bao), in the Miño - Sil basin and linked to O Bolo, Ourense and Galicia, is at 81.1% of its capacity, holding 193 hm³ against a maximum capacity of 238 hm³. It is currently falling, by 8.0 hm³ this week.

Compared with 2025: below (-8.8 points). Compared with the recent historical mean: above (+18.1 points).

Its main uses include water supply, irrigation and hydroelectric power.

References
Reference	Level	Difference
Previous week	84.5%	-3.4 pts
Same week 2025	89.9%	-8.8 pts
10-year mean	63.0%	+18.1 pts

Technical data

Characteristics of the dam and its recorded uses.

Characteristics

Municipality: O Bolo
River: Bibey
Dam type: Gravity
Year built: 1960
Surface area: 820 ha
Upstream: Cenza
Downstream: Montefurado

Recorded uses

Water supply
Irrigation
Electricity
Fishing

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

Source: MITECO Inventory of Dams and Reservoirs.

Data: MITECO · AEMET