Arlanzón reservoir

Burgos · Castilla y León

Duero basin Reservoirs in Castilla y León

Province: Burgos
Basin: Duero
River: Arlanzón
Dam: Gravity · 1933

36.4%

Current level

8 hm³

Stored water

22 hm³

Total capacity

0.0 hm³

Weekly change

-2.0 hm³

Vs. 2025

-4.5 hm³

Vs. 10-year mean

Historical trend

Stored water volume · hm³

hm³

Weekly summary

The Arlanzón reservoir (embalse de Arlanzón), in the Duero basin and linked to Villasur de Herreros / Villorobe, Burgos and Castilla y León, is at 36.4% of its capacity, holding 8 hm³ against a maximum capacity of 22 hm³. It is currently steady in the latest update.

Compared with 2025: below (-9.1 points). Compared with the recent historical mean: below (-20.5 points).

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

References
Reference	Level	Difference
Previous week	36.4%	0.0 pts
Same week 2025	45.5%	-9.1 pts
10-year mean	56.8%	-20.5 pts

Technical data

Characteristics of the dam and its recorded uses.

Characteristics

Municipality: Villasur de Herreros / Villorobe
River: Arlanzón
Dam type: Gravity
Year built: 1933
Surface area: 130 ha
Upstream: — no data
Downstream: Uzquiza

Recorded uses

Water supply
Irrigation
Electricity
Industrial

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

Source: MITECO Inventory of Dams and Reservoirs.

Data: MITECO · AEMET