Urdalur reservoir

Navarra · Navarra

Ebro basin Reservoirs in Navarra

Province: Navarra
Basin: Ebro
River: Alzania
Dam: Roller-compacted concrete · 1994

50.0%

Current level

3 hm³

Stored water

6 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 Urdalur reservoir (embalse de Urdalur), in the Ebro basin and linked to Ciordia, Navarra and Navarra, is at 50.0% of its capacity, holding 3 hm³ against a maximum capacity of 6 hm³. It is currently steady in the latest update.

Compared with 2025: in line with that level. Compared with the recent historical mean: below (-3.3 points).

Its main uses include water supply.

References
Reference	Level	Difference
Previous week	50.0%	0.0 pts
Same week 2025	50.0%	0.0 pts
10-year mean	53.3%	-3.3 pts

Technical data

Characteristics of the dam and its recorded uses.

Characteristics

Municipality: Ciordia
River: Alzania
Dam type: Roller-compacted concrete
Year built: 1994
Surface area: 30 ha
Upstream: — no data
Downstream: Mequinenza

Recorded uses

Water supply
Fishing

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

Source: MITECO Inventory of Dams and Reservoirs.

Data: MITECO · AEMET