San Antón
Baztan-Bidasoa · Navarre · Cantábrico Oriental
Capacity
5 hm³
Coordinates
43.275°N, 1.773°W
Operator
CHCo
80.0% full
Current fill
80.0%vs 7 days ago
0.0%stable
vs 1 year ago
0.0%year-over-year
7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 5 hm³ |
| Usable capacity | 4.5 hm³ |
| Primary use | Multi-purpose |
| Operator | CHCo |
| Province | Baztan-Bidasoa |
| Autonomous community | Navarre |
| River basin | Cantábrico Oriental |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 43.275, -1.773 · Open in Google Maps
About San Antón
As of September 7, 2026, San Antón is filled to 80.0% of its total capacity, holding roughly 4 hm³ of water out of a maximum 5 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts), and it sits close to where it was a year earlier.
Across the readings we hold for San Antón — 419 data points between September 4, 2018 and September 7, 2026 — the level has ranged from a low of 80.0% (September 25, 2018) to a high of 100.0% (September 4, 2018). On average the reservoir is fullest around January and at its lowest around September.
It is operated by CHCo primarily for multiple purposes. It lies within the Cantábrico Oriental basin at 43.275°N, 1.773°W.
Key facts
- Current fill level
- 80.0%
- Water stored
- 4 hm³
- Total capacity
- 5 hm³
- 7-day change
- No change
- Year-on-year
- No change
- Primary use
- Multipurpose
- River basin
- Cantábrico Oriental
- Operator
- CHCo
- Coordinates
- 43.275°N, 1.773°W
- Last updated
- September 7, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 7 Sep 2026 | 80.0% | 4 |
| 1 Sep 2026 | 80.0% | 4 |
| 25 Aug 2026 | 80.0% | 4 |
| 18 Aug 2026 | 80.0% | 4 |
| 11 Aug 2026 | 80.0% | 4 |
| 4 Aug 2026 | 80.0% | 4 |
| 28 Jul 2026 | 80.0% | 4 |
| 21 Jul 2026 | 100.0% | 5 |
| 14 Jul 2026 | 100.0% | 5 |
| 7 Jul 2026 | 100.0% | 5 |
| 30 Jun 2026 | 100.0% | 5 |
| 23 Jun 2026 | 100.0% | 5 |