Rules
Granada · Andalusia · Cuenca Mediterránea Andaluza
Capacity
111 hm³
Coordinates
36.859°N, 3.496°W
Operator
CHMS
81.1% full
Current fill
81.1%vs 13 Oct 2026
-0.9 pplosing
vs 1 year ago
+16.2 ppyear-over-year
Trend
→stable
Drought context
Storage vs October average
123%of normal
81.1% full on 2026-10-19, against an average of 66.2% for October across 9 years of readings (+14.9 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Rules 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 −0.35). Rain, not storage.
EU drought indicator · 11 October 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 | 111 hm³ |
| Primary use | Multi-purpose |
| Operator | CHMS |
| Province | Granada |
| Region | Andalusia |
| River basin | Cuenca Mediterránea Andaluza |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 36.859°N, 3.496°W · Open in Google Maps
About Rules
As of October 19, 2026, Rules is filled to 81.1% of its total capacity, holding 90 hm³ of water out of a maximum 111 hm³. At this level the reservoir is high.
Since October 13, 2026 the fill level has held broadly steady (-0.9 pp), and it is 16.2 points above its level on the same date a year earlier.
Across the readings we hold for Rules — 419 data points between October 16, 2018 and October 19, 2026 — the level has ranged from a low of 30.6% (February 6, 2024) to a high of 98.2% (May 28, 2019). On average the reservoir is fullest around June and at its lowest around November.
It is operated by CHMS primarily for multiple purposes. It lies within the Cuenca Mediterránea Andaluza basin at 36.859°N, 3.496°W.
Key facts
- Current fill level
- 81.1% of total capacity
- Water stored
- 90 hm³
- Total capacity
- 111 hm³
- Change since October 13, 2026
- ▼ 0.9 pp
- Year-on-year
- ▲ 16.2 pp
- Primary use
- Multipurpose
- River basin
- Cuenca Mediterránea Andaluza
- Operator
- CHMS
- Coordinates
- 36.859°N, 3.496°W
- Last updated
- October 19, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 19 Oct 2026 | 81.1% | 90 |
| 13 Oct 2026 | 82.0% | 91 |
| 6 Oct 2026 | 82.0% | 91 |
| 29 Sep 2026 | 82.9% | 92 |
| 22 Sep 2026 | 84.7% | 94 |
| 15 Sep 2026 | 84.7% | 94 |
| 8 Sep 2026 | 86.5% | 96 |
| 1 Sep 2026 | 88.3% | 98 |
| 25 Aug 2026 | 89.2% | 99 |
| 18 Aug 2026 | 90.1% | 100 |
| 11 Aug 2026 | 91.0% | 101 |
| 4 Aug 2026 | 92.8% | 103 |