Chanza reservoir

Huelva · Andalucía

Guadiana basin Reservoirs in Andalucía

Province: Huelva
Basin: Guadiana
River: Chanza
Dam: Gravity · 1989

53.8%

Current level

182 hm³

Stored water

338 hm³

Total capacity

-6.0 hm³

Weekly change

-33.0 hm³

Vs. 2025

+26.8 hm³

Vs. 10-year mean

Historical trend

Stored water volume · hm³

hm³

Weekly summary

The Chanza reservoir (embalse de Chanza), in the Guadiana basin and linked to Granado, El, Huelva and Andalucía, is at 53.8% of its capacity, holding 182 hm³ against a maximum capacity of 338 hm³. It is currently falling, by 6.0 hm³ this week.

Compared with 2025: below (-9.8 points). Compared with the recent historical mean: above (+8.2 points).

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

References
Reference	Level	Difference
Previous week	55.6%	-1.8 pts
Same week 2025	63.6%	-9.8 pts
10-year mean	45.6%	+8.2 pts

Technical data

Characteristics of the dam and its recorded uses.

Characteristics

Municipality: Granado, El
River: Chanza
Dam type: Gravity
Year built: 1989
Surface area: 2,239 ha
Upstream: Andévalo
Downstream: No

Recorded uses

Water supply
Irrigation
Electricity
Fishing
Boating

Not recorded: industrial, swimming, picnic, restaurants.

Source: MITECO Inventory of Dams and Reservoirs.

Data: MITECO · AEMET