Oliana reservoir

Lleida · Catalunya

Ebro basin Reservoirs in Catalunya

Province: Lleida
Basin: Ebro
River: Segre
Dam: Gravity · 1959

46.4%

Current level

39 hm³

Stored water

84 hm³

Total capacity

-1.0 hm³

Weekly change

-14.0 hm³

Vs. 2025

-3.2 hm³

Vs. 10-year mean

Historical trend

Stored water volume · hm³

hm³

Weekly summary

The Oliana reservoir (embalse de Oliana), in the Ebro basin and linked to Oliana y Peramola, Lleida and Catalunya, is at 46.4% of its capacity, holding 39 hm³ against a maximum capacity of 84 hm³. It is currently falling, by 1.0 hm³ this week.

Compared with 2025: below (-16.7 points). Compared with the recent historical mean: below (-3.8 points).

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

References
Reference	Level	Difference
Previous week	47.6%	-1.2 pts
Same week 2025	63.1%	-16.7 pts
10-year mean	50.2%	-3.8 pts

Technical data

Characteristics of the dam and its recorded uses.

Characteristics

Municipality: Oliana y Peramola
River: Segre
Dam type: Gravity
Year built: 1959
Surface area: 443 ha
Upstream: — no data
Downstream: Rialb

Recorded uses

Water supply
Irrigation
Electricity
Industrial
Fishing
Boating
Restaurants

Not recorded: swimming, picnic.

Source: MITECO Inventory of Dams and Reservoirs.

Data: MITECO · AEMET