Caia
Portalegre · Alentejo · Guadiana
Capacity
225 hm³
Coordinates
38.893°N, 7.197°W
Operator
RH7
82.0% full
Current fill
82.0%vs 7 days ago
N/Avs 1 year ago
N/A7-day trend
N/ADrought context
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Caia 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 −0.97). Rain, not storage.
EU drought indicator · 11 October 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. Portugal drought figures →
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 225 hm³ |
| Usable capacity | 202.5 hm³ |
| Primary use | Multi-purpose |
| Operator | RH7 |
| Province | Portalegre |
| Region | Alentejo |
| River basin | Guadiana |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 38.893°N, 7.197°W · Open in Google Maps
About Caia
As of October 27, 2026, Caia is filled to 82.0% of its total capacity, holding 184.5 hm³ of water out of a maximum 225 hm³. At this level the reservoir is high. Of that total, 202.5 hm³ is usable (live) storage.
No reading from about a week earlier is on file, so the 7-day change is not available.
Across the readings we hold for Caia — 1 data points between October 27, 2026 and October 27, 2026 — the level has ranged from a low of 82.0% (October 27, 2026) to a high of 82.0% (October 27, 2026).
It is operated by RH7 primarily for multiple purposes. It lies within the Guadiana basin at 38.893°N, 7.197°W.
Key facts
- Current fill level
- 82.0% of total capacity
- Water stored
- 184.5 hm³
- Total capacity
- 225 hm³
- Usable capacity
- 202.5 hm³
- 7-day change
- N/A
- Primary use
- Multipurpose
- River basin
- Guadiana
- Operator
- RH7
- Coordinates
- 38.893°N, 7.197°W
- Last updated
- October 27, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 27 Oct 2026 | 82.0% | 184.5 |