Cernadilla
Zamora · Castile and León · Duero
Capacity
255 hm³
Coordinates
42.008°N, 6.506°W
Operator
CHD
Current fill
72.9%vs 7 days ago
-2.4%losing
vs 1 year ago
-8.7%year-over-year
7-day trend
↓falling
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 255 hm³ |
| Usable capacity | 229.5 hm³ |
| Primary use | Multi-purpose |
| Operator | CHD |
| Province | Zamora |
| Autonomous community | Castile and León |
| River basin | Duero |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 42.008, -6.506 · Open in Google Maps
About Cernadilla
As of June 9, 2026, Cernadilla is filled to 72.9% of its total capacity, holding roughly 186 hm³ of water out of a maximum 255 hm³. At this level the reservoir is within its normal operating range. Of that total, about 230 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 2.4 percentage points, and it is 8.7 points below its level on the same date a year earlier.
Across the readings we hold for Cernadilla — 418 data points between June 12, 2018 and June 9, 2026 — the level has ranged from a low of 9.8% (August 30, 2022) to a high of 93.7% (May 14, 2024). 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 42.008°N, 6.506°W.
Key facts
- Current fill level
- 72.9%
- Water stored
- 186 hm³
- Total capacity
- 255 hm³
- Usable capacity
- 230 hm³
- 7-day change
- ▼ 2.4 pts
- Year-on-year
- ▼ 8.7 pts
- Primary use
- Multipurpose
- River basin
- Duero
- Operator
- CHD
- Coordinates
- 42.008°N, 6.506°W
- Last updated
- June 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Jun 2026 | 72.9% | 186 |
| 2 Jun 2026 | 75.3% | 192 |
| 26 May 2026 | 76.9% | 196 |
| 19 May 2026 | 78.8% | 201 |
| 12 May 2026 | 76.5% | 195 |
| 5 May 2026 | 76.9% | 196 |
| 28 Apr 2026 | 77.6% | 198 |
| 21 Apr 2026 | 77.3% | 197 |
| 14 Apr 2026 | 76.9% | 196 |
| 7 Apr 2026 | 74.9% | 191 |
| 31 Mar 2026 | 72.5% | 185 |
| 24 Mar 2026 | 72.9% | 186 |
Frequently asked questions
What is the current water level of Cernadilla?
As of June 9, 2026, Cernadilla is at 72.9% of its capacity, holding approximately 186 hm³ of water, according to MITECO data.
Is Cernadilla reservoir full?
No. As of June 9, 2026, Cernadilla is within its normal operating range at 72.9% of its capacity, so it is not full.
Is the water level at Cernadilla rising or falling?
The level at Cernadilla is falling — it dropped 2.4 percentage points over the latest week on record.
How much water can Cernadilla hold?
Cernadilla has a total capacity of 255 hm³, of which about 230 hm³ is usable storage.
Where is Cernadilla reservoir located?
Cernadilla is located in Zamora, Castile and León, Spain, within the Duero basin (coordinates 42.008°N, 6.506°W).
What is Cernadilla used for?
Cernadilla is used primarily for multiple purposes, and is managed by CHD.