Eiras
Pontevedra · Galicia · Galicia Costa
Capacity
22 hm³
Coordinates
42.345°N, 8.481°W
Operator
AGA
77.3% full
Current fill
77.3%vs 7 days ago
-4.5%losing
vs 1 year ago
-4.5%year-over-year
7-day trend
↓falling
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 22 hm³ |
| Usable capacity | 19.8 hm³ |
| Primary use | Multi-purpose |
| Operator | AGA |
| Province | Pontevedra |
| Autonomous community | Galicia |
| River basin | Galicia Costa |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 42.345, -8.481 · Open in Google Maps
About Eiras
As of July 27, 2026, Eiras is filled to 77.3% of its total capacity, holding roughly 17 hm³ of water out of a maximum 22 hm³. At this level the reservoir is within its normal operating range. Of that total, about 20 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 4.5 percentage points, and it is 4.5 points below its level on the same date a year earlier.
Across the readings we hold for Eiras — 420 data points between July 17, 2018 and July 27, 2026 — the level has ranged from a low of 50.0% (October 14, 2025) to a high of 100.0% (July 17, 2018). On average the reservoir is fullest around April and at its lowest around October.
It is operated by AGA primarily for multiple purposes. It lies within the Galicia Costa basin at 42.345°N, 8.481°W.
Key facts
- Current fill level
- 77.3%
- Water stored
- 17 hm³
- Total capacity
- 22 hm³
- Usable capacity
- 20 hm³
- 7-day change
- ▼ 4.5 pts
- Year-on-year
- ▼ 4.5 pts
- Primary use
- Multipurpose
- River basin
- Galicia Costa
- Operator
- AGA
- Coordinates
- 42.345°N, 8.481°W
- Last updated
- July 27, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 27 Jul 2026 | 77.3% | 17 |
| 20 Jul 2026 | 81.8% | 18 |
| 14 Jul 2026 | 86.4% | 19 |
| 7 Jul 2026 | 86.4% | 19 |
| 30 Jun 2026 | 90.9% | 20 |
| 23 Jun 2026 | 95.5% | 21 |
| 16 Jun 2026 | 95.5% | 21 |
| 9 Jun 2026 | 100.0% | 22 |
| 2 Jun 2026 | 100.0% | 22 |
| 26 May 2026 | 100.0% | 22 |
| 19 May 2026 | 100.0% | 22 |
| 12 May 2026 | 100.0% | 22 |
Frequently asked questions
What is the current water level of Eiras?
As of July 27, 2026, Eiras is at 77.3% of its capacity, holding approximately 17 hm³ of water, according to embalses.net data.
Is Eiras reservoir full?
No. As of July 27, 2026, Eiras is within its normal operating range at 77.3% of its capacity, so it is not full.
Is the water level at Eiras rising or falling?
The level at Eiras is falling — it dropped 4.5 percentage points over the latest week on record.
How much water can Eiras hold?
Eiras has a total capacity of 22 hm³, of which about 20 hm³ is usable storage.
Where is Eiras reservoir located?
Eiras is located in Pontevedra, Galicia, Spain, within the Galicia Costa basin (coordinates 42.345°N, 8.481°W).
What is Eiras used for?
Eiras is used primarily for multiple purposes, and is managed by AGA.