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 7 days ago
0.0%stable
vs 1 year ago
-14.6%year-over-year
7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 124 hm³ |
| Usable capacity | 111.6 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. 40.551, -4.056 · Open in Google Maps
About Valmayor
As of October 6, 2026, Valmayor is filled to 67.7% of its total capacity, holding roughly 84 hm³ of water out of a maximum 124 hm³. At this level the reservoir is within its normal operating range. Of that total, about 112 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts), and it is 14.6 points below its level on the same date a year earlier.
Across the readings we hold for Valmayor — 418 data points between October 9, 2018 and October 6, 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%
- Water stored
- 84 hm³
- Total capacity
- 124 hm³
- Usable capacity
- 112 hm³
- 7-day change
- No change
- Year-on-year
- ▼ 14.6 pts
- Primary use
- Multipurpose
- River basin
- Tajo
- Operator
- CHT
- Coordinates
- 40.551°N, 4.056°W
- Last updated
- October 6, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 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 |
| 28 Jul 2026 | 77.4% | 96 |
| 21 Jul 2026 | 79.0% | 98 |