Maranhão
Portalegre · Alentejo · Tejo
Capacity
213 hm³
Coordinates
38.907°N, 8.150°W
Operator
RH5
86.3% full
Current fill
86.3%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
Moderately dry
In the three months to 11 October 2026 the area around Maranhão 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 −1.18). Rain, not storage.
EU drought indicator · 11 October 2026
Watchrainfall 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. Portugal drought figures →
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 213 hm³ |
| Usable capacity | 191.7 hm³ |
| Primary use | Multi-purpose |
| Operator | RH5 |
| Province | Portalegre |
| Region | Alentejo |
| River basin | Tejo |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 38.907°N, 8.150°W · Open in Google Maps
About Maranhão
As of October 27, 2026, Maranhão is filled to 86.3% of its total capacity, holding 183.8 hm³ of water out of a maximum 213 hm³. At this level the reservoir is high. Of that total, 191.7 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 Maranhão — 1 data points between October 27, 2026 and October 27, 2026 — the level has ranged from a low of 86.3% (October 27, 2026) to a high of 86.3% (October 27, 2026).
It is operated by RH5 primarily for multiple purposes. It lies within the Tejo basin at 38.907°N, 8.150°W.
Key facts
- Current fill level
- 86.3% of total capacity
- Water stored
- 183.8 hm³
- Total capacity
- 213 hm³
- Usable capacity
- 191.7 hm³
- 7-day change
- N/A
- Primary use
- Multipurpose
- River basin
- Tejo
- Operator
- RH5
- Coordinates
- 38.907°N, 8.150°W
- Last updated
- October 27, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 27 Oct 2026 | 86.3% | 183.8 |