Confederación Hidrográfica · Spain
Cantábrico Occidental
74.1% llenado medio
Embalses
10
Volumen embalsado
363 hm³
Capacidad total
496 hm³
Críticos
1
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Todos los embalses
10 embalsesAlfilorios
Asturias
Fill level
62.5%
5 hm³
/ 8 cap.
Alsa - Mediajo
Cantábrico Occidental
Fill level
90.9%
20 hm³
/ 22 cap.
Arbón
Asturias
Fill level
87.8%
36 hm³
/ 41 cap.
La barca
Asturias
Fill level
85.3%
29 hm³
/ 34 cap.
La Cohilla
Cantabria
Fill level
8.3%
1 hm³
/ 12 cap.
Doiras
Asturias
Fill level
83.5%
81 hm³
/ 97 cap.
Rioseco
Cantábrico Occidental
Fill level
75.0%
3 hm³
/ 4 cap.
Salime
Asturias
Fill level
66.4%
158 hm³
/ 238 cap.
Somiedo (Lagos)
Cantábrico Occidental
Fill level
N/A
6 hm³ cap.
Tanes
Asturias
Fill level
88.2%
30 hm³
/ 34 cap.
About reservoirs in Cantábrico Occidental
As of July 27, 2026, the reservoirs we track across Cantábrico Occidental that report live levels hold roughly 363 hm³ of water — about 74.1% of their combined capacity. Taken together, Cantábrico Occidental's reservoirs are within their normal operating range.
Across the region, 1 reservoir is at critically low levels. Alsa - Mediajo is the fullest at 90.9%, while La Cohilla is the lowest at 8.3%.
Over the most recent week on record, 1 reservoir rose and 2 reservoirs fell across Cantábrico Occidental.
Storage figures for Cantábrico Occidental come from MITECO; the most recent reading is from July 27, 2026. Each reservoir below links to its own page with full history and seasonal context.
Cantábrico Occidental at a glance
- Reservoirs tracked
- 10
- Average fill
- 74.1%
- Water stored
- 363 hm³
- Combined capacity
- 496 hm³
- At critically low levels
- 1
- Fullest
- Alsa - Mediajo (90.9%)
- Lowest
- La Cohilla (8.3%)
- Last updated
- July 27, 2026
Frequently asked questions
How full are reservoirs in Cantábrico Occidental right now?
As of July 27, 2026, the reservoirs tracked in Cantábrico Occidental that report live levels are 74.1% full overall, holding about 363 hm³ of water.
How many reservoirs are there in Cantábrico Occidental?
reservoirs.earth tracks 10 reservoirs in Cantábrico Occidental, with a combined storage capacity of 496 hm³.
Which reservoir in Cantábrico Occidental is the fullest?
Alsa - Mediajo is currently the fullest reservoir in Cantábrico Occidental, at 90.9% of capacity.
Which reservoir in Cantábrico Occidental is the lowest?
La Cohilla is currently the lowest in Cantábrico Occidental, at 8.3% of capacity.
Where does the reservoir data for Cantábrico Occidental come from?
All storage figures for Cantábrico Occidental come from MITECO, an official source, last updated July 27, 2026.