Valmayor
Community of Madrid · Tajo
Capacity
124 hm³
Coordinates
40.551°N, 4.056°W
Operator
CHT
67.7% full
Current fill
67.7%vs 13 Oct 2026
0.0 ppstable
vs 1 year ago
-15.4 ppyear-over-year
Trend
→stable
Drought context
Storage vs October average
112%of normal
67.7% full on 2026-10-19, against an average of 60.3% for October across 9 years of readings (+7.4 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Valmayor had rain close to normal for the season. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −0.90). Rain, not storage.
EU drought indicator · 11 October 2026
Warningsoil-moisture deficit
The European Drought Observatory's combined reading of rain, soil moisture and vegetation at this point. Watch means rain has been short, Warning that the soil has dried out, Alert that vegetation is visibly stressed; Recovery means the shortfall is easing. Ground conditions, not the reservoir's storage. Spain drought figures →
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 124 hm³ |
| Primary use | Multi-purpose |
| Operator | CHT |
| Region | Community of Madrid |
| River basin | Tajo |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 40.551°N, 4.056°W · Open in Google Maps
About Valmayor
As of October 19, 2026, Valmayor is filled to 67.7% of its total capacity, holding 84 hm³ of water out of a maximum 124 hm³. At this level the reservoir is within its normal operating range.
Since October 13, 2026 the fill level has held broadly steady (+0.0 pp), and it is 15.4 points below its level on the same date a year earlier.
Across the readings we hold for Valmayor — 419 data points between October 16, 2018 and October 19, 2026 — the level has ranged from a low of 46.8% (August 20, 2024) to a high of 99.2% (May 13, 2025). On average the reservoir is fullest around April and at its lowest around September.
It is operated by CHT primarily for multiple purposes. It lies within the Tajo basin at 40.551°N, 4.056°W.
Key facts
- Current fill level
- 67.7% of total capacity
- Water stored
- 84 hm³
- Total capacity
- 124 hm³
- Change since October 13, 2026
- No change
- Year-on-year
- ▼ 15.4 pp
- Primary use
- Multipurpose
- River basin
- Tajo
- Operator
- CHT
- Coordinates
- 40.551°N, 4.056°W
- Last updated
- October 19, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 19 Oct 2026 | 67.7% | 84 |
| 13 Oct 2026 | 67.7% | 84 |
| 6 Oct 2026 | 67.7% | 84 |
| 29 Sep 2026 | 67.7% | 84 |
| 22 Sep 2026 | 67.7% | 84 |
| 15 Sep 2026 | 68.5% | 85 |
| 8 Sep 2026 | 68.5% | 85 |
| 1 Sep 2026 | 69.4% | 86 |
| 25 Aug 2026 | 69.4% | 86 |
| 18 Aug 2026 | 71.0% | 88 |
| 11 Aug 2026 | 72.6% | 90 |
| 4 Aug 2026 | 75.0% | 93 |