San Juan reservoir

Madrid · Comunidad de Madrid

Province
Madrid
Basin
Tajo
River
Alberche
Dam
Gravity · 1955

51.4%

Current level

71 hm³

Stored water

138 hm³

Total capacity

-2.0 hm³

Weekly change

-11.0 hm³

Vs. 2025

+6.9 hm³

Vs. 10-year mean

Historical trend

Stored water volume · hm³

hm³

Technical data

Characteristics of the dam and its recorded uses.

Characteristics

Municipality
San Martín de Valdeiglesias
River
Alberche
Dam type
Gravity
Year built
1955
Surface area
650 ha
Upstream
El Burguillo
Downstream
Picadas

Recorded uses

Water supplyRECORDED
IrrigationRECORDED
ElectricityRECORDED
IndustrialRECORDED
FishingRECORDED
BoatingRECORDED
SwimmingRECORDED
PicnicNOT RECORDED
RestaurantsRECORDED

Source: MITECO Inventory of Dams and Reservoirs.

Data: MITECO · AEMET