Rioseco reservoir

Asturias · Asturias / Asturies

Cantábrico Occidental basin Reservoirs in Asturias / Asturies

Province: Asturias
Basin: Cantábrico Occidental
River: Nalón
Dam: Gravity · 1978

75.0%

Current level

3 hm³

Stored water

4 hm³

Total capacity

0.0 hm³

Weekly change

0.0 hm³

Vs. 2025

+0.11 hm³

Vs. 10-year mean

Historical trend

Stored water volume · hm³

hm³

Weekly summary

The Rioseco reservoir (embalse de Rioseco), in the Cantábrico Occidental basin and linked to Sobrescobio, Asturias and Asturias / Asturies, is at 75.0% of its capacity, holding 3 hm³ against a maximum capacity of 4 hm³. It is currently steady in the latest update.

Compared with 2025: in line with that level. Compared with the recent historical mean: above (+2.8 points).

Its main uses include water supply and hydroelectric power.

References
Reference	Level	Difference
Previous week	75.0%	0.0 pts
Same week 2025	75.0%	0.0 pts
10-year mean	72.2%	+2.8 pts

Technical data

Characteristics of the dam and its recorded uses.

Characteristics

Municipality: Sobrescobio
River: Nalón
Dam type: Gravity
Year built: 1978
Surface area: 55 ha
Upstream: Tanes
Downstream: No

Recorded uses

Water supply
Electricity
Fishing

Not recorded: irrigation, industrial, boating, swimming, picnic, restaurants.

Source: MITECO Inventory of Dams and Reservoirs.

Data: MITECO · AEMET