Añarbe
Larraun-Leitzaldea · Navarre · Cantábrico Oriental
Capacity
38 hm³
Coordinates
43.226°N, 1.874°W
Operator
CHCo
55.3% full
Current fill
55.3%vs 7 days ago
-2.6%losing
vs 1 year ago
-18.4%year-over-year
7-day trend
↓falling
Drought context
Storage vs October average
85%of normal
55.3% full on 2026-10-06, against an average of 64.7% for October across 9 years of readings (-9.4 points).
Rain over the last three months · 21 September 2026
Severely dry
In the three months to 21 September 2026 the area around Añarbe had far less rain than normal, a shortfall seen about one year in fifteen. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −1.84). Rain, not storage.
EU drought indicator · 11 September 2026
Warningsoil-moisture deficit
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 | 38 hm³ |
| Usable capacity | 34.2 hm³ |
| Primary use | Multi-purpose |
| Operator | CHCo |
| Province | Larraun-Leitzaldea |
| Autonomous community | Navarre |
| River basin | Cantábrico Oriental |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 43.226, -1.874 · Open in Google Maps
About Añarbe
As of October 6, 2026, Añarbe is filled to 55.3% of its total capacity, holding roughly 21 hm³ of water out of a maximum 38 hm³. At this level the reservoir is within its normal operating range. Of that total, about 34 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 2.6 percentage points, and it is 18.4 points below its level on the same date a year earlier.
Across the readings we hold for Añarbe — 418 data points between October 9, 2018 and October 6, 2026 — the level has ranged from a low of 55.3% (October 6, 2026) to a high of 94.7% (April 28, 2020). On average the reservoir is fullest around May and at its lowest around September.
It is operated by CHCo primarily for multiple purposes. It lies within the Cantábrico Oriental basin at 43.226°N, 1.874°W.
Key facts
- Current fill level
- 55.3%
- Water stored
- 21 hm³
- Total capacity
- 38 hm³
- Usable capacity
- 34 hm³
- 7-day change
- ▼ 2.6 pts
- Year-on-year
- ▼ 18.4 pts
- Primary use
- Multipurpose
- River basin
- Cantábrico Oriental
- Operator
- CHCo
- Coordinates
- 43.226°N, 1.874°W
- Last updated
- October 6, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 6 Oct 2026 | 55.3% | 21 |
| 29 Sep 2026 | 57.9% | 22 |
| 22 Sep 2026 | 57.9% | 22 |
| 15 Sep 2026 | 60.5% | 23 |
| 8 Sep 2026 | 60.5% | 23 |
| 1 Sep 2026 | 63.2% | 24 |
| 25 Aug 2026 | 65.8% | 25 |
| 18 Aug 2026 | 65.8% | 25 |
| 11 Aug 2026 | 68.4% | 26 |
| 4 Aug 2026 | 68.4% | 26 |
| 28 Jul 2026 | 71.1% | 27 |
| 21 Jul 2026 | 71.1% | 27 |