Tanes
Asturias · Cantábrico Occidental
Capacity
34 hm³
Coordinates
43.221°N, 5.428°W
Operator
CHCoc
64.7% full
Current fill
64.7%vs 13 Oct 2026
0.0 ppstable
vs 1 year ago
+5.9 ppyear-over-year
Trend
→stable
Drought context
Storage vs October average
106%of normal
64.7% full on 2026-10-19, against an average of 61.3% for October across 9 years of readings (+3.4 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Tanes had rain close to normal for the season. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −0.26). Rain, not storage.
EU drought indicator · 11 October 2026
Recoverysoil moisture recovering
The European Drought Observatory's combined reading of rain, soil moisture and vegetation at this point. Watch means rain has been short, Warning that the soil has dried out, Alert that vegetation is visibly stressed; Recovery means the shortfall is easing. Ground conditions, not the reservoir's storage. Spain drought figures →
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 34 hm³ |
| Primary use | Multi-purpose |
| Operator | CHCoc |
| Province | Asturias |
| River basin | Cantábrico Occidental |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 43.221°N, 5.428°W · Open in Google Maps
About Tanes
As of October 19, 2026, Tanes is filled to 64.7% of its total capacity, holding 22 hm³ of water out of a maximum 34 hm³. At this level the reservoir is within its normal operating range.
Since October 13, 2026 the fill level has held broadly steady (+0.0 pp), and it is 5.9 points above its level on the same date a year earlier.
Across the readings we hold for Tanes — 419 data points between October 16, 2018 and October 19, 2026 — the level has ranged from a low of 44.1% (November 11, 2025) to a high of 100.0% (May 19, 2026). On average the reservoir is fullest around June and at its lowest around January.
It is operated by CHCoc primarily for multiple purposes. It lies within the Cantábrico Occidental basin at 43.221°N, 5.428°W.
Key facts
- Current fill level
- 64.7% of total capacity
- Water stored
- 22 hm³
- Total capacity
- 34 hm³
- Change since October 13, 2026
- No change
- Year-on-year
- ▲ 5.9 pp
- Primary use
- Multipurpose
- River basin
- Cantábrico Occidental
- Operator
- CHCoc
- Coordinates
- 43.221°N, 5.428°W
- Last updated
- October 19, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 19 Oct 2026 | 64.7% | 22 |
| 13 Oct 2026 | 64.7% | 22 |
| 6 Oct 2026 | 58.8% | 20 |
| 29 Sep 2026 | 64.7% | 22 |
| 22 Sep 2026 | 64.7% | 22 |
| 15 Sep 2026 | 67.6% | 23 |
| 8 Sep 2026 | 70.6% | 24 |
| 1 Sep 2026 | 73.5% | 25 |
| 25 Aug 2026 | 76.5% | 26 |
| 18 Aug 2026 | 79.4% | 27 |
| 11 Aug 2026 | 82.4% | 28 |
| 4 Aug 2026 | 85.3% | 29 |