Ullívarri
Álava · Autonomous Community of the Basque Country · Ebro
Capacity
146 hm³
Coordinates
42.924°N, 2.576°W
Operator
CHE
67.1% full
Current fill
67.1%vs 7 days ago
-1.4%losing
vs 1 year ago
-4.8%year-over-year
7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 146 hm³ |
| Usable capacity | 131.4 hm³ |
| Primary use | Multi-purpose |
| Operator | CHE |
| Province | Álava |
| Autonomous community | Autonomous Community of the Basque Country |
| River basin | Ebro |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 42.924, -2.576 · Open in Google Maps
About Ullívarri
As of September 7, 2026, Ullívarri is filled to 67.1% of its total capacity, holding roughly 98 hm³ of water out of a maximum 146 hm³. At this level the reservoir is within its normal operating range. Of that total, about 131 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (-1.4 pts), and it is 4.8 points below its level on the same date a year earlier.
Across the readings we hold for Ullívarri — 419 data points between September 4, 2018 and September 7, 2026 — the level has ranged from a low of 56.2% (October 24, 2023) to a high of 95.2% (December 14, 2021). On average the reservoir is fullest around April and at its lowest around November.
It is operated by CHE primarily for multiple purposes. It lies within the Ebro basin at 42.924°N, 2.576°W.
Key facts
- Current fill level
- 67.1%
- Water stored
- 98 hm³
- Total capacity
- 146 hm³
- Usable capacity
- 131 hm³
- 7-day change
- ▼ 1.4 pts
- Year-on-year
- ▼ 4.8 pts
- Primary use
- Multipurpose
- River basin
- Ebro
- Operator
- CHE
- Coordinates
- 42.924°N, 2.576°W
- Last updated
- September 7, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 7 Sep 2026 | 67.1% | 98 |
| 1 Sep 2026 | 68.5% | 100 |
| 25 Aug 2026 | 69.9% | 102 |
| 18 Aug 2026 | 71.2% | 104 |
| 11 Aug 2026 | 72.6% | 106 |
| 4 Aug 2026 | 74.0% | 108 |
| 28 Jul 2026 | 76.0% | 111 |
| 21 Jul 2026 | 77.4% | 113 |
| 14 Jul 2026 | 79.5% | 116 |
| 7 Jul 2026 | 80.8% | 118 |
| 30 Jun 2026 | 82.9% | 121 |
| 23 Jun 2026 | 84.2% | 123 |