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
0.0%stable
vs 1 year ago
N/A7-day trend
→stable
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 |
| River | Guadiana |
| Province | Portalegre |
| Autonomous community | Alentejo |
| River basin | Guadiana |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 38.893, -7.197 · Open in Google Maps
About Caia
As of July 21, 2026, Caia is filled to 82.0% of its total capacity, holding roughly 185 hm³ of water out of a maximum 225 hm³. At this level the reservoir is high. Of that total, about 203 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts).
Across the readings we hold for Caia — 1 data points between July 21, 2026 and July 21, 2026 — the level has ranged from a low of 82.0% (July 21, 2026) to a high of 82.0% (July 21, 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%
- Water stored
- 185 hm³
- Total capacity
- 225 hm³
- Usable capacity
- 203 hm³
- 7-day change
- No change
- Primary use
- Multipurpose
- River
- Guadiana
- River basin
- Guadiana
- Operator
- RH7
- Coordinates
- 38.893°N, 7.197°W
- Last updated
- July 21, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 21 Jul 2026 | 82.0% | 185 |
Frequently asked questions
What is the current water level of Caia?
As of July 21, 2026, Caia is at 82.0% of its capacity, holding approximately 185 hm³ of water, according to SNIRH data.
Is Caia reservoir full?
No. As of July 21, 2026, Caia is high at 82.0% of its capacity, so it is not full.
Is the water level at Caia rising or falling?
The level at Caia has been broadly stable over the latest week on record (0.0 points).
How much water can Caia hold?
Caia has a total capacity of 225 hm³, of which about 203 hm³ is usable storage.
Where is Caia reservoir located?
Caia is located in Portalegre, Alentejo, Portugal, within the Guadiana basin (coordinates 38.893°N, 7.197°W).
What is Caia used for?
Caia is used primarily for multiple purposes, and is managed by RH7.