Guadarranque reservoir

Cádiz · Andalucía

Cuenca Mediterránea Andaluza basin Reservoirs in Andalucía

Province: Cádiz
Basin: Cuenca Mediterránea Andaluza
River: Guadarranque
Dam: Homogeneous embankment · 1965

75.0%

Current level

66 hm³

Stored water

88 hm³

Total capacity

0.0 hm³

Weekly change

+4.0 hm³

Vs. 2025

+26.2 hm³

Vs. 10-year mean

Historical trend

Stored water volume · hm³

hm³

Weekly summary

The Guadarranque reservoir (embalse de Guadarranque), in the Cuenca Mediterránea Andaluza basin and linked to Los Barrios, Castellar, Cádiz and Andalucía, is at 75.0% of its capacity, holding 66 hm³ against a maximum capacity of 88 hm³. It is currently steady in the latest update.

Compared with 2025: above (+4.5 points). Compared with the recent historical mean: above (+29.8 points).

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

References
Reference	Level	Difference
Previous week	75.0%	0.0 pts
Same week 2025	70.5%	+4.5 pts
10-year mean	45.2%	+29.8 pts

Technical data

Characteristics of the dam and its recorded uses.

Characteristics

Municipality: Los Barrios, Castellar
River: Guadarranque
Dam type: Homogeneous embankment
Year built: 1965
Surface area: 435 ha
Upstream: — no data
Downstream: No

Recorded uses

Water supply
Irrigation
Electricity
Industrial
Fishing
Boating

Not recorded: swimming, picnic, restaurants.

Source: MITECO Inventory of Dams and Reservoirs.

Data: MITECO · AEMET