Pías (San Agustín) reservoir

Ourense · Galicia

Miño - Sil basin Reservoirs in GaliciaHydroelectric

Province: Ourense
Basin: Miño - Sil
River: Bibey
Dam: Homogeneous embankment with facing · 1961

50.0%

Current level

5 hm³

Stored water

10 hm³

Total capacity

0.0 hm³

Weekly change

+1.0 hm³

Vs. 2025

-0.1 hm³

Vs. 10-year mean

Historical trend

Stored water volume · hm³

hm³

Weekly summary

The Pías (San Agustín) reservoir (embalse de Pías (San Agustín)), in the Miño - Sil basin and linked to Viana do Bolo, Pias, Ourense and Galicia, is at 50.0% of its capacity, holding 5 hm³ against a maximum capacity of 10 hm³. It is currently steady in the latest update.

Compared with 2025: above (+10.0 points). Compared with the recent historical mean: below (-1.0 points).

Its main uses include water supply and hydroelectric power.

References
Reference	Level	Difference
Previous week	50.0%	0.0 pts
Same week 2025	40.0%	+10.0 pts
10-year mean	51.0%	-1.0 pts

Technical data

Characteristics of the dam and its recorded uses.

Characteristics

Municipality: Viana do Bolo, Pias
River: Bibey
Dam type: Homogeneous embankment with facing
Year built: 1961
Surface area: 70 ha
Upstream: San Sebastián
Downstream: Bao

Recorded uses

Water supply
Electricity

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

Source: MITECO Inventory of Dams and Reservoirs.

Data: MITECO · AEMET