Bao
Ourense · Galicia · Miño - Sil
Capacity
238 hm³
Coordinates
42.219°N, 7.140°W
Operator
CHS
84.5% full
Current fill
84.5%vs 7 days ago
-1.2%losing
vs 1 year ago
-5.4%year-over-year
7-day trend
→stable
Drought context
Storage vs October average
131%of normal
84.5% full on 2026-10-13, against an average of 64.6% for October across 9 years of readings (+19.9 points).
Rain over the last three months · 21 September 2026
Near normal
In the three months to 21 September 2026 the area around Bao had rain close to normal for the season. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −0.28). Rain, not storage.
EU drought indicator · 11 September 2026
Noneno drought signal
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 | 238 hm³ |
| Usable capacity | 214.2 hm³ |
| Primary use | Multi-purpose |
| Operator | CHS |
| Province | Ourense |
| Autonomous community | Galicia |
| River basin | Miño - Sil |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 42.219, -7.140 · Open in Google Maps
About Bao
As of October 13, 2026, Bao is filled to 84.5% of its total capacity, holding roughly 201 hm³ of water out of a maximum 238 hm³. At this level the reservoir is high. Of that total, about 214 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (-1.2 pts), and it is 5.4 points below its level on the same date a year earlier.
Across the readings we hold for Bao — 418 data points between October 16, 2018 and October 13, 2026 — the level has ranged from a low of 46.2% (September 21, 2021) to a high of 96.6% (May 28, 2024). On average the reservoir is fullest around February and at its lowest around November.
It is operated by CHS primarily for multiple purposes. It lies within the Miño - Sil basin at 42.219°N, 7.140°W.
Key facts
- Current fill level
- 84.5%
- Water stored
- 201 hm³
- Total capacity
- 238 hm³
- Usable capacity
- 214 hm³
- 7-day change
- ▼ 1.2 pts
- Year-on-year
- ▼ 5.4 pts
- Primary use
- Multipurpose
- River basin
- Miño - Sil
- Operator
- CHS
- Coordinates
- 42.219°N, 7.140°W
- Last updated
- October 13, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 13 Oct 2026 | 84.5% | 201 |
| 6 Oct 2026 | 85.7% | 204 |
| 29 Sep 2026 | 86.6% | 206 |
| 22 Sep 2026 | 87.4% | 208 |
| 15 Sep 2026 | 91.6% | 218 |
| 8 Sep 2026 | 94.1% | 224 |
| 1 Sep 2026 | 93.3% | 222 |
| 25 Aug 2026 | 93.7% | 223 |
| 18 Aug 2026 | 94.1% | 224 |
| 11 Aug 2026 | 92.4% | 220 |
| 4 Aug 2026 | 93.3% | 222 |
| 28 Jul 2026 | 93.3% | 222 |