Sau
Barcelona · Catalonia · Cuencas Internas de Cataluña
Capacity
165 hm³
Coordinates
41.976°N, 2.384°E
Operator
ACA
Current fill
95.2%vs 7 days ago
+3.1%gaining
vs 1 year ago
+27.9%year-over-year
7-day trend
↑rising
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 165 hm³ |
| Usable capacity | 148.5 hm³ |
| Primary use | Multi-purpose |
| Operator | ACA |
| Province | Barcelona |
| Autonomous community | Catalonia |
| River basin | Cuencas Internas de Cataluña |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 41.976, 2.384 · Open in Google Maps
About Sau
As of June 9, 2026, Sau is filled to 95.2% of its total capacity, holding roughly 157 hm³ of water out of a maximum 165 hm³. At this level the reservoir is high. Of that total, about 149 hm³ is usable (live) storage.
Over the most recent week on record the fill level has risen by 3.1 percentage points, and it is 27.9 points above its level on the same date a year earlier.
Across the readings we hold for Sau — 418 data points between June 12, 2018 and June 9, 2026 — the level has ranged from a low of 1.2% (March 5, 2024) to a high of 100.0% (January 28, 2020). On average the reservoir is fullest around June and at its lowest around October.
It is operated by ACA primarily for multiple purposes. It lies within the Cuencas Internas de Cataluña basin at 41.976°N, 2.384°E.
Key facts
- Current fill level
- 95.2%
- Water stored
- 157 hm³
- Total capacity
- 165 hm³
- Usable capacity
- 149 hm³
- 7-day change
- ▲ 3.1 pts
- Year-on-year
- ▲ 27.9 pts
- Primary use
- Multipurpose
- River basin
- Cuencas Internas de Cataluña
- Operator
- ACA
- Coordinates
- 41.976°N, 2.384°E
- Last updated
- June 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Jun 2026 | 95.2% | 157 |
| 2 Jun 2026 | 92.1% | 152 |
| 26 May 2026 | 91.5% | 151 |
| 19 May 2026 | 91.5% | 151 |
| 12 May 2026 | 91.5% | 151 |
| 5 May 2026 | 88.5% | 146 |
| 28 Apr 2026 | 88.5% | 146 |
| 21 Apr 2026 | 87.3% | 144 |
| 14 Apr 2026 | 87.9% | 145 |
| 7 Apr 2026 | 89.7% | 148 |
| 31 Mar 2026 | 87.3% | 144 |
| 24 Mar 2026 | 88.5% | 146 |
Frequently asked questions
What is the current water level of Sau?
As of June 9, 2026, Sau is at 95.2% of its capacity, holding approximately 157 hm³ of water, according to MITECO data.
Is Sau reservoir full?
Sau is essentially full, sitting at 95.2% of capacity as of June 9, 2026.
Is the water level at Sau rising or falling?
The level at Sau is rising — it gained 3.1 percentage points over the latest week on record.
How much water can Sau hold?
Sau has a total capacity of 165 hm³, of which about 149 hm³ is usable storage.
Where is Sau reservoir located?
Sau is located in Barcelona, Catalonia, Spain, within the Cuencas Internas de Cataluña basin (coordinates 41.976°N, 2.384°E).
What is Sau used for?
Sau is used primarily for multiple purposes, and is managed by ACA.