Castro
Zamora · Castile and León · Duero
Capacity
27 hm³
Coordinates
41.577°N, 6.184°W
Operator
CHD
85.2% full
Current fill
85.2%vs 7 days ago
-3.7%losing
vs 1 year ago
-3.7%year-over-year
7-day trend
↓falling
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 27 hm³ |
| Usable capacity | 24.3 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. 41.577, -6.184 · Open in Google Maps
About Castro
As of July 27, 2026, Castro is filled to 85.2% of its total capacity, holding roughly 23 hm³ of water out of a maximum 27 hm³. At this level the reservoir is high. Of that total, about 24 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 3.7 percentage points, and it is 3.7 points below its level on the same date a year earlier.
Across the readings we hold for Castro — 420 data points between July 17, 2018 and July 27, 2026 — the level has ranged from a low of 63.0% (February 4, 2020) to a high of 96.3% (May 14, 2019). On average the reservoir is fullest around January and at its lowest around September.
It is operated by CHD primarily for multiple purposes. It lies within the Duero basin at 41.577°N, 6.184°W.
Key facts
- Current fill level
- 85.2%
- Water stored
- 23 hm³
- Total capacity
- 27 hm³
- Usable capacity
- 24 hm³
- 7-day change
- ▼ 3.7 pts
- Year-on-year
- ▼ 3.7 pts
- Primary use
- Multipurpose
- River basin
- Duero
- Operator
- CHD
- Coordinates
- 41.577°N, 6.184°W
- Last updated
- July 27, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 27 Jul 2026 | 85.2% | 23 |
| 20 Jul 2026 | 88.9% | 24 |
| 14 Jul 2026 | 88.9% | 24 |
| 7 Jul 2026 | 85.2% | 23 |
| 30 Jun 2026 | 88.9% | 24 |
| 23 Jun 2026 | 88.9% | 24 |
| 16 Jun 2026 | 85.2% | 23 |
| 9 Jun 2026 | 88.9% | 24 |
| 2 Jun 2026 | 85.2% | 23 |
| 26 May 2026 | 92.6% | 25 |
| 19 May 2026 | 88.9% | 24 |
| 12 May 2026 | 88.9% | 24 |
Frequently asked questions
What is the current water level of Castro?
As of July 27, 2026, Castro is at 85.2% of its capacity, holding approximately 23 hm³ of water, according to embalses.net data.
Is Castro reservoir full?
No. As of July 27, 2026, Castro is high at 85.2% of its capacity, so it is not full.
Is the water level at Castro rising or falling?
The level at Castro is falling — it dropped 3.7 percentage points over the latest week on record.
How much water can Castro hold?
Castro has a total capacity of 27 hm³, of which about 24 hm³ is usable storage.
Where is Castro reservoir located?
Castro is located in Zamora, Castile and León, Spain, within the Duero basin (coordinates 41.577°N, 6.184°W).
What is Castro used for?
Castro is used primarily for multiple purposes, and is managed by CHD.