Guístolas reservoir

Ourense · Galicia

Miño - Sil basin Reservoirs in GaliciaHydroelectric

Province: Ourense
Basin: Miño - Sil
River: Navea
Dam: Gravity · 1952

60.0%

Current level

3 hm³

Stored water

5 hm³

Total capacity

0.0 hm³

Weekly change

0.0 hm³

Vs. 2025

+0.2 hm³

Vs. 10-year mean

Historical trend

Stored water volume · hm³

hm³

Weekly summary

The Guístolas reservoir (embalse de Guístolas), in the Miño - Sil basin and linked to Puebla Trieves, Ourense and Galicia, is at 60.0% of its capacity, holding 3 hm³ against a maximum capacity of 5 hm³. It is currently steady in the latest update.

Compared with 2025: in line with that level. Compared with the recent historical mean: above (+4.0 points).

Its main uses include water supply and hydroelectric power.

References
Reference	Level	Difference
Previous week	60.0%	0.0 pts
Same week 2025	60.0%	0.0 pts
10-year mean	56.0%	+4.0 pts

Technical data

Characteristics of the dam and its recorded uses.

Characteristics

Municipality: Puebla Trieves
River: Navea
Dam type: Gravity
Year built: 1952
Surface area: 37 ha
Upstream: Chandreja
Downstream: Montefurado

Recorded uses

Water supply
Electricity
Fishing

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

Source: MITECO Inventory of Dams and Reservoirs.

Data: MITECO · AEMET