La Jarosa
Community of Madrid · Tajo
Capacity
7 hm³
Coordinates
40.668°N, 4.123°W
Operator
CHT
42.9% full
Current fill
42.9%vs 7 days ago
0.0%stable
vs 1 year ago
-14.2%year-over-year
7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 7 hm³ |
| Usable capacity | 6.3 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. 40.668, -4.123 · Open in Google Maps
About La Jarosa
As of July 27, 2026, La Jarosa is filled to 42.9% of its total capacity, holding roughly 3 hm³ of water out of a maximum 7 hm³. At this level the reservoir is within its normal operating range. Of that total, about 6 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 14.2 points below its level on the same date a year earlier.
Across the readings we hold for La Jarosa — 420 data points between July 17, 2018 and July 27, 2026 — the level has ranged from a low of 14.3% (October 15, 2019) to a high of 100.0% (March 9, 2021). 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 40.668°N, 4.123°W.
Key facts
- Current fill level
- 42.9%
- Water stored
- 3 hm³
- Total capacity
- 7 hm³
- Usable capacity
- 6 hm³
- 7-day change
- No change
- Year-on-year
- ▼ 14.2 pts
- Primary use
- Multipurpose
- River basin
- Tajo
- Operator
- CHT
- Coordinates
- 40.668°N, 4.123°W
- Last updated
- July 27, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 27 Jul 2026 | 42.9% | 3 |
| 20 Jul 2026 | 42.9% | 3 |
| 14 Jul 2026 | 42.9% | 3 |
| 7 Jul 2026 | 57.1% | 4 |
| 30 Jun 2026 | 57.1% | 4 |
| 23 Jun 2026 | 57.1% | 4 |
| 16 Jun 2026 | 57.1% | 4 |
| 9 Jun 2026 | 71.4% | 5 |
| 2 Jun 2026 | 71.4% | 5 |
| 26 May 2026 | 71.4% | 5 |
| 19 May 2026 | 71.4% | 5 |
| 12 May 2026 | 71.4% | 5 |
Frequently asked questions
What is the current water level of La Jarosa?
As of July 27, 2026, La Jarosa is at 42.9% of its capacity, holding approximately 3 hm³ of water, according to embalses.net data.
Is La Jarosa reservoir full?
No. As of July 27, 2026, La Jarosa is within its normal operating range at 42.9% of its capacity, so it is not full.
Is the water level at La Jarosa rising or falling?
The level at La Jarosa has been broadly stable over the latest week on record (0.0 points).
How much water can La Jarosa hold?
La Jarosa has a total capacity of 7 hm³, of which about 6 hm³ is usable storage.
Where is La Jarosa reservoir located?
La Jarosa is located in Community of Madrid, Spain, within the Tajo basin (coordinates 40.668°N, 4.123°W).
What is La Jarosa used for?
La Jarosa is used primarily for multiple purposes, and is managed by CHT.