Sistema Valle de Arán
Ebro
Capacity
22 hm³
Coordinates
0.000°N, 0.000°E
Operator
Ebro
40.9% full
Current fill
40.9%vs 7 days ago
0.0%stable
vs 1 year ago
-4.6%year-over-year
7-day trend
→stable
Drought context
Storage vs October average
67%of normal
40.9% full on 2026-10-13, against an average of 60.6% for October across 9 years of readings (-19.7 points).
Technical specifications
| Total capacity | 22 hm³ |
| Usable capacity | 22 hm³ |
| Primary use | — |
| Operator | Ebro |
| River basin | Ebro |
About Sistema Valle de Arán
As of October 13, 2026, Sistema Valle de Arán is filled to 40.9% of its total capacity, holding roughly 9 hm³ of water out of a maximum 22 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts), and it is 4.6 points below its level on the same date a year earlier.
Across the readings we hold for Sistema Valle de Arán — 418 data points between October 16, 2018 and October 13, 2026 — the level has ranged from a low of 13.6% (April 7, 2026) to a high of 54.5% (October 16, 2018). On average the reservoir is fullest around November and at its lowest around May.
It is operated by Ebro. It lies within the Ebro basin at 0.000°N, 0.000°E.
Key facts
- Current fill level
- 40.9%
- Water stored
- 9 hm³
- Total capacity
- 22 hm³
- 7-day change
- No change
- Year-on-year
- ▼ 4.6 pts
- River basin
- Ebro
- Operator
- Ebro
- Coordinates
- 0.000°N, 0.000°E
- Last updated
- October 13, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 13 Oct 2026 | 40.9% | 9 |
| 6 Oct 2026 | 40.9% | 9 |
| 29 Sep 2026 | 13.6% | 3 |
| 22 Sep 2026 | 13.6% | 3 |
| 15 Sep 2026 | 13.6% | 3 |
| 8 Sep 2026 | 13.6% | 3 |
| 1 Sep 2026 | 13.6% | 3 |
| 25 Aug 2026 | 13.6% | 3 |
| 18 Aug 2026 | 13.6% | 3 |
| 11 Aug 2026 | 13.6% | 3 |
| 4 Aug 2026 | 13.6% | 3 |
| 28 Jul 2026 | 13.6% | 3 |