Cernadilla reservoir

Zamora · Castilla y León

Duero basin Reservoirs in Castilla y LeónHydroelectric

Province: Zamora
Basin: Duero
River: Tera
Dam: Gravity · 1969

13.3%

Current level

34 hm³

Stored water

255 hm³

Total capacity

-1.0 hm³

Weekly change

0.0 hm³

Vs. 2025

-12.1 hm³

Vs. 10-year mean

Historical trend

Stored water volume · hm³

hm³

Weekly summary

The Cernadilla reservoir (embalse de Cernadilla), in the Duero basin and linked to Cernadilla - Manzanal de Arriba, Zamora and Castilla y León, is at 13.3% of its capacity, holding 34 hm³ against a maximum capacity of 255 hm³. It is currently falling, by 1.0 hm³ this week.

Compared with 2025: in line with that level. Compared with the recent historical mean: below (-4.7 points).

Its main uses include water supply and hydroelectric power.

References
Reference	Level	Difference
Previous week	13.7%	-0.4 pts
Same week 2025	13.3%	0.0 pts
10-year mean	18.1%	-4.7 pts

Technical data

Characteristics of the dam and its recorded uses.

Characteristics

Municipality: Cernadilla - Manzanal de Arriba
River: Tera
Dam type: Gravity
Year built: 1969
Surface area: 1,394 ha
Upstream: Puente Porto
Downstream: Valparaiso

Recorded uses

Water supply
Electricity
Fishing
Boating
Swimming

Not recorded: irrigation, industrial, picnic, restaurants.

Source: MITECO Inventory of Dams and Reservoirs.

Data: MITECO · AEMET