Riaño
León · Castile and León · Duero
Capacity
641 hm³
Coordinates
42.973°N, 5.011°W
Operator
CHD
62.9% full
Current fill
62.9%vs 7 days ago
-5.0%losing
vs 1 year ago
-0.4%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 July 27, 2026, Riaño is filled to 62.9% of its total capacity, holding roughly 403 hm³ of water out of a maximum 641 hm³. At this level the reservoir is within its normal operating range. Of that total, about 577 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 5.0 percentage points, and it sits close to where it was a year earlier.
Across the readings we hold for Riaño — 420 data points between July 17, 2018 and July 27, 2026 — the level has ranged from a low of 26.1% (October 17, 2023) to a high of 95.5% (May 27, 2025). 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
- 62.9%
- Water stored
- 403 hm³
- Total capacity
- 641 hm³
- Usable capacity
- 577 hm³
- 7-day change
- ▼ 5.0 pts
- Year-on-year
- ▼ 0.4 pts
- Primary use
- Multipurpose
- River basin
- Duero
- Operator
- CHD
- Coordinates
- 42.973°N, 5.011°W
- Last updated
- July 27, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 27 Jul 2026 | 62.9% | 403 |
| 20 Jul 2026 | 67.9% | 435 |
| 14 Jul 2026 | 72.7% | 466 |
| 7 Jul 2026 | 77.4% | 496 |
| 30 Jun 2026 | 81.7% | 524 |
| 23 Jun 2026 | 85.6% | 549 |
| 16 Jun 2026 | 89.2% | 572 |
| 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 |
Frequently asked questions
What is the current water level of Riaño?
As of July 27, 2026, Riaño is at 62.9% of its capacity, holding approximately 403 hm³ of water, according to embalses.net data.
Is Riaño reservoir full?
No. As of July 27, 2026, Riaño is within its normal operating range at 62.9% 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 5.0 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.