Santillana
Community of Madrid · Tajo
Capacity
91 hm³
Coordinates
40.725°N, 3.831°W
Operator
CHT
Current fill
89.0%vs 7 days ago
-2.2%losing
vs 1 year ago
-4.4%year-over-year
7-day trend
↓falling
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 91 hm³ |
| Usable capacity | 81.9 hm³ |
| Primary use | Multi-purpose |
| Operator | CHT |
| Autonomous community | Community of Madrid |
| River basin | Tajo |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 40.725, -3.831 · Open in Google Maps
About Santillana
As of June 9, 2026, Santillana is filled to 89.0% of its total capacity, holding roughly 81 hm³ of water out of a maximum 91 hm³. At this level the reservoir is high. Of that total, about 82 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 2.2 percentage points, and it is 4.4 points below its level on the same date a year earlier.
Across the readings we hold for Santillana — 418 data points between June 12, 2018 and June 9, 2026 — the level has ranged from a low of 31.9% (November 12, 2019) to a high of 100.0% (March 25, 2025). On average the reservoir is fullest around April and at its lowest around October.
It is operated by CHT primarily for multiple purposes. It lies within the Tajo basin at 40.725°N, 3.831°W.
Key facts
- Current fill level
- 89.0%
- Water stored
- 81 hm³
- Total capacity
- 91 hm³
- Usable capacity
- 82 hm³
- 7-day change
- ▼ 2.2 pts
- Year-on-year
- ▼ 4.4 pts
- Primary use
- Multipurpose
- River basin
- Tajo
- Operator
- CHT
- Coordinates
- 40.725°N, 3.831°W
- Last updated
- June 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Jun 2026 | 89.0% | 81 |
| 2 Jun 2026 | 91.2% | 83 |
| 26 May 2026 | 92.3% | 84 |
| 19 May 2026 | 93.4% | 85 |
| 12 May 2026 | 94.5% | 86 |
| 5 May 2026 | 94.5% | 86 |
| 28 Apr 2026 | 95.6% | 87 |
| 21 Apr 2026 | 95.6% | 87 |
| 14 Apr 2026 | 95.6% | 87 |
| 7 Apr 2026 | 95.6% | 87 |
| 31 Mar 2026 | 95.6% | 87 |
| 24 Mar 2026 | 95.6% | 87 |
Frequently asked questions
What is the current water level of Santillana?
As of June 9, 2026, Santillana is at 89.0% of its capacity, holding approximately 81 hm³ of water, according to MITECO data.
Is Santillana reservoir full?
No. As of June 9, 2026, Santillana is high at 89.0% of its capacity, so it is not full.
Is the water level at Santillana rising or falling?
The level at Santillana is falling — it dropped 2.2 percentage points over the latest week on record.
How much water can Santillana hold?
Santillana has a total capacity of 91 hm³, of which about 82 hm³ is usable storage.
Where is Santillana reservoir located?
Santillana is located in Community of Madrid, Spain, within the Tajo basin (coordinates 40.725°N, 3.831°W).
What is Santillana used for?
Santillana is used primarily for multiple purposes, and is managed by CHT.