Portodemouros
Terra de Melide · Galicia · Galicia Costa
Capacity
297 hm³
Coordinates
42.850°N, 8.141°W
Operator
AGA
56.6% full
Current fill
56.6%vs 7 days ago
-0.3%losing
vs 1 year ago
+22.9%year-over-year
7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 297 hm³ |
| Usable capacity | 267.3 hm³ |
| Primary use | Multi-purpose |
| Operator | AGA |
| Province | Terra de Melide |
| Autonomous community | Galicia |
| River basin | Galicia Costa |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 42.850, -8.141 · Open in Google Maps
About Portodemouros
As of September 7, 2026, Portodemouros is filled to 56.6% of its total capacity, holding roughly 168 hm³ of water out of a maximum 297 hm³. At this level the reservoir is within its normal operating range. Of that total, about 267 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (-0.3 pts), and it is 22.9 points above its level on the same date a year earlier.
Across the readings we hold for Portodemouros — 419 data points between September 4, 2018 and September 7, 2026 — the level has ranged from a low of 27.9% (October 28, 2025) to a high of 100.0% (December 24, 2019). On average the reservoir is fullest around February and at its lowest around October.
It is operated by AGA primarily for multiple purposes. It lies within the Galicia Costa basin at 42.850°N, 8.141°W.
Key facts
- Current fill level
- 56.6%
- Water stored
- 168 hm³
- Total capacity
- 297 hm³
- Usable capacity
- 267 hm³
- 7-day change
- ▼ 0.3 pts
- Year-on-year
- ▲ 22.9 pts
- Primary use
- Multipurpose
- River basin
- Galicia Costa
- Operator
- AGA
- Coordinates
- 42.850°N, 8.141°W
- Last updated
- September 7, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 7 Sep 2026 | 56.6% | 168 |
| 1 Sep 2026 | 56.9% | 169 |
| 25 Aug 2026 | 57.2% | 170 |
| 18 Aug 2026 | 57.9% | 172 |
| 11 Aug 2026 | 59.9% | 178 |
| 4 Aug 2026 | 59.9% | 178 |
| 28 Jul 2026 | 60.6% | 180 |
| 21 Jul 2026 | 61.3% | 182 |
| 14 Jul 2026 | 62.0% | 184 |
| 7 Jul 2026 | 62.3% | 185 |
| 30 Jun 2026 | 65.0% | 193 |
| 23 Jun 2026 | 68.4% | 203 |