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
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 | 213 hm³ |
| Usable capacity | 191.7 hm³ |
| Primary use | Multi-purpose |
| Operator | RH5 |
| River | Tejo |
| Province | Portalegre |
| Autonomous community | Alentejo |
| River basin | Tejo |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 38.907, -8.150 · Open in Google Maps
About Maranhão
As of September 8, 2026, Maranhão is filled to 86.3% of its total capacity, holding roughly 184 hm³ of water out of a maximum 213 hm³. At this level the reservoir is high. Of that total, about 192 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 Maranhão — 1 data points between September 8, 2026 and September 8, 2026 — the level has ranged from a low of 86.3% (September 8, 2026) to a high of 86.3% (September 8, 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%
- Water stored
- 184 hm³
- Total capacity
- 213 hm³
- Usable capacity
- 192 hm³
- 7-day change
- No change
- Primary use
- Multipurpose
- River
- Tejo
- River basin
- Tejo
- Operator
- RH5
- Coordinates
- 38.907°N, 8.150°W
- Last updated
- September 8, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 8 Sep 2026 | 86.3% | 184 |