Vellón,El-(Pedrezuela) reservoir

Madrid · Comunidad de Madrid

Tajo basin Reservoirs in Comunidad de Madrid

Province: Madrid
Basin: Tajo
River: Guadalix
Dam: Arch · 1967

78.0%

Current level

32 hm³

Stored water

41 hm³

Total capacity

0.0 hm³

Weekly change

-2.0 hm³

Vs. 2025

+3.1 hm³

Vs. 10-year mean

Historical trend

Stored water volume · hm³

hm³

Weekly summary

The Vellón,El-(Pedrezuela) reservoir (embalse de Vellón,El-(Pedrezuela)), in the Tajo basin and linked to Pedrezuela, Madrid and Comunidad de Madrid, is at 78.0% of its capacity, holding 32 hm³ against a maximum capacity of 41 hm³. It is currently steady in the latest update.

Compared with 2025: below (-4.9 points). Compared with the recent historical mean: above (+7.6 points).

Its main uses include water supply and irrigation.

References
Reference	Level	Difference
Previous week	78.0%	0.0 pts
Same week 2025	82.9%	-4.9 pts
10-year mean	70.5%	+7.6 pts

Technical data

Characteristics of the dam and its recorded uses.

Characteristics

Municipality: Pedrezuela
River: Guadalix
Dam type: Arch
Year built: 1967
Surface area: 393 ha
Upstream: — no data
Downstream: Castrejón

Recorded uses

Water supply
Irrigation
Fishing
Boating
Restaurants

Not recorded: electricity, industrial, swimming, picnic.

Source: MITECO Inventory of Dams and Reservoirs.

Data: MITECO · AEMET