Riaño
León · Castile and León · Duero
Capacity
641 hm³
Coordinates
42.973°N, 5.011°W
Operator
CHD
Current fill
92.5%vs 7 days ago
-1.9%losing
vs 1 year ago
+1.2%year-over-year
7-day trend
↓falling
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 641 hm³ |
| Usable capacity | 576.9 hm³ |
| Primary use | Multi-purpose |
| Operator | CHD |
| Province | León |
| Autonomous community | Castile and León |
| River basin | Duero |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 42.973, -5.011 · Open in Google Maps
About Riaño
As of June 9, 2026, Riaño is filled to 92.5% of its total capacity, holding roughly 593 hm³ of water out of a maximum 641 hm³. At this level the reservoir is high. Of that total, about 577 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 1.9 percentage points, and it is 1.2 points above its level on the same date a year earlier.
Across the readings we hold for Riaño — 418 data points between June 12, 2018 and June 9, 2026 — the level has ranged from a low of 26.1% (October 17, 2023) to a high of 97.0% (June 19, 2018). On average the reservoir is fullest around May and at its lowest around October.
It is operated by CHD primarily for multiple purposes. It lies within the Duero basin at 42.973°N, 5.011°W.
Key facts
- Current fill level
- 92.5%
- Water stored
- 593 hm³
- Total capacity
- 641 hm³
- Usable capacity
- 577 hm³
- 7-day change
- ▼ 1.9 pts
- Year-on-year
- ▲ 1.2 pts
- Primary use
- Multipurpose
- River basin
- Duero
- Operator
- CHD
- Coordinates
- 42.973°N, 5.011°W
- Last updated
- June 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Jun 2026 | 92.5% | 593 |
| 2 Jun 2026 | 94.4% | 605 |
| 26 May 2026 | 94.9% | 608 |
| 19 May 2026 | 93.4% | 599 |
| 12 May 2026 | 91.0% | 583 |
| 5 May 2026 | 89.5% | 574 |
| 28 Apr 2026 | 88.9% | 570 |
| 21 Apr 2026 | 89.4% | 573 |
| 14 Apr 2026 | 89.2% | 572 |
| 7 Apr 2026 | 88.9% | 570 |
| 31 Mar 2026 | 88.3% | 566 |
| 24 Mar 2026 | 87.8% | 563 |
Frequently asked questions
What is the current water level of Riaño?
As of June 9, 2026, Riaño is at 92.5% of its capacity, holding approximately 593 hm³ of water, according to MITECO data.
Is Riaño reservoir full?
No. As of June 9, 2026, Riaño is high at 92.5% of its capacity, so it is not full.
Is the water level at Riaño rising or falling?
The level at Riaño is falling — it dropped 1.9 percentage points over the latest week on record.
How much water can Riaño hold?
Riaño has a total capacity of 641 hm³, of which about 577 hm³ is usable storage.
Where is Riaño reservoir located?
Riaño is located in León, Castile and León, Spain, within the Duero basin (coordinates 42.973°N, 5.011°W).
What is Riaño used for?
Riaño is used primarily for multiple purposes, and is managed by CHD.