Añarbe
Larraun-Leitzaldea · Navarre · Cantábrico Oriental
Capacity
38 hm³
Coordinates
43.226°N, 1.874°W
Operator
CHCo
52.6% full
Current fill
52.6%vs 13 Oct 2026
-2.7 pplosing
vs 1 year ago
-18.5 ppyear-over-year
Trend
↓falling
Drought context
Storage vs October average
81%of normal
52.6% full on 2026-10-19, against an average of 64.7% for October across 9 years of readings (-12.1 points).
Rain over the last three months · 11 October 2026
Moderately dry
In the three months to 11 October 2026 the area around Añarbe had well below normal rain, a shortfall seen about one year in six. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −1.09). Rain, not storage.
EU drought indicator · 11 October 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 |
| Primary use | Multi-purpose |
| Operator | CHCo |
| Province | Larraun-Leitzaldea |
| Region | Navarre |
| River basin | Cantábrico Oriental |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 43.226°N, 1.874°W · Open in Google Maps
About Añarbe
As of October 19, 2026, Añarbe is filled to 52.6% of its total capacity, holding 20 hm³ of water out of a maximum 38 hm³. At this level the reservoir is within its normal operating range.
Since October 13, 2026 the fill level has fallen by 2.7 percentage points, and it is 18.5 points below its level on the same date a year earlier.
Across the readings we hold for Añarbe — 419 data points between October 16, 2018 and October 19, 2026 — the level has ranged from a low of 52.6% (October 19, 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
- 52.6% of total capacity
- Water stored
- 20 hm³
- Total capacity
- 38 hm³
- Change since October 13, 2026
- ▼ 2.7 pp
- Year-on-year
- ▼ 18.5 pp
- Primary use
- Multipurpose
- River basin
- Cantábrico Oriental
- Operator
- CHCo
- Coordinates
- 43.226°N, 1.874°W
- Last updated
- October 19, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 19 Oct 2026 | 52.6% | 20 |
| 13 Oct 2026 | 55.3% | 21 |
| 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 |