Guadalmena
Jaén · Andalusia · Guadalquivir
Capacity
345 hm³
Coordinates
38.390°N, 2.900°W
Operator
CHGu
78.3% full
Current fill
78.3%vs 7 days ago
-0.8%losing
vs 1 year ago
+36.0%year-over-year
7-day trend
→stable
Drought context
Storage vs October average
192%of normal
78.3% full on 2026-10-06, against an average of 40.7% for October across 9 years of readings (+37.6 points).
Rain over the last three months · 21 September 2026
Moderately dry
In the three months to 21 September 2026 the area around Guadalmena had well below normal rain, a shortfall seen about one year in six. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −1.09). Rain, not storage.
EU drought indicator · 11 September 2026
Noneno drought signal
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 | 345 hm³ |
| Usable capacity | 310.5 hm³ |
| Primary use | Multi-purpose |
| Operator | CHGu |
| Province | Jaén |
| Autonomous community | Andalusia |
| River basin | Guadalquivir |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 38.390, -2.900 · Open in Google Maps
About Guadalmena
As of October 6, 2026, Guadalmena is filled to 78.3% of its total capacity, holding roughly 270 hm³ of water out of a maximum 345 hm³. At this level the reservoir is within its normal operating range. Of that total, about 311 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (-0.8 pts), and it is 36.0 points above its level on the same date a year earlier.
Across the readings we hold for Guadalmena — 418 data points between October 9, 2018 and October 6, 2026 — the level has ranged from a low of 15.7% (October 18, 2022) to a high of 95.9% (April 21, 2026). On average the reservoir is fullest around June and at its lowest around November.
It is operated by CHGu primarily for multiple purposes. It lies within the Guadalquivir basin at 38.390°N, 2.900°W.
Key facts
- Current fill level
- 78.3%
- Water stored
- 270 hm³
- Total capacity
- 345 hm³
- Usable capacity
- 311 hm³
- 7-day change
- ▼ 0.8 pts
- Year-on-year
- ▲ 36.0 pts
- Primary use
- Multipurpose
- River basin
- Guadalquivir
- Operator
- CHGu
- Coordinates
- 38.390°N, 2.900°W
- Last updated
- October 6, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 6 Oct 2026 | 78.3% | 270 |
| 29 Sep 2026 | 79.1% | 273 |
| 22 Sep 2026 | 80.0% | 276 |
| 15 Sep 2026 | 80.9% | 279 |
| 8 Sep 2026 | 81.7% | 282 |
| 1 Sep 2026 | 82.6% | 285 |
| 25 Aug 2026 | 83.8% | 289 |
| 18 Aug 2026 | 84.6% | 292 |
| 11 Aug 2026 | 85.5% | 295 |
| 4 Aug 2026 | 86.7% | 299 |
| 28 Jul 2026 | 87.5% | 302 |
| 21 Jul 2026 | 88.4% | 305 |