Chanza
Huelva · Andalusia · Guadiana
Capacity
338 hm³
Coordinates
37.600°N, 7.454°W
Operator
CHSU
70.4% full
Current fill
70.4%vs 7 days ago
-1.8%losing
vs 1 year ago
-5.9%year-over-year
7-day trend
↓falling
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 338 hm³ |
| Usable capacity | 304.2 hm³ |
| Primary use | Multi-purpose |
| Operator | CHSU |
| Province | Huelva |
| Autonomous community | Andalusia |
| River basin | Guadiana |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 37.600, -7.454 · Open in Google Maps
About Chanza
As of July 27, 2026, Chanza is filled to 70.4% of its total capacity, holding roughly 238 hm³ of water out of a maximum 338 hm³. At this level the reservoir is within its normal operating range. Of that total, about 304 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 1.8 percentage points, and it is 5.9 points below its level on the same date a year earlier.
Across the readings we hold for Chanza — 420 data points between July 17, 2018 and July 27, 2026 — the level has ranged from a low of 35.2% (January 11, 2022) to a high of 96.7% (April 1, 2025). On average the reservoir is fullest around April and at its lowest around October.
It is operated by CHSU primarily for multiple purposes. It lies within the Guadiana basin at 37.600°N, 7.454°W.
Key facts
- Current fill level
- 70.4%
- Water stored
- 238 hm³
- Total capacity
- 338 hm³
- Usable capacity
- 304 hm³
- 7-day change
- ▼ 1.8 pts
- Year-on-year
- ▼ 5.9 pts
- Primary use
- Multipurpose
- River basin
- Guadiana
- Operator
- CHSU
- Coordinates
- 37.600°N, 7.454°W
- Last updated
- July 27, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 27 Jul 2026 | 70.4% | 238 |
| 20 Jul 2026 | 72.2% | 244 |
| 14 Jul 2026 | 74.0% | 250 |
| 7 Jul 2026 | 76.0% | 257 |
| 30 Jun 2026 | 77.8% | 263 |
| 23 Jun 2026 | 79.6% | 269 |
| 16 Jun 2026 | 81.1% | 274 |
| 9 Jun 2026 | 82.5% | 279 |
| 2 Jun 2026 | 84.6% | 286 |
| 26 May 2026 | 86.7% | 293 |
| 19 May 2026 | 88.2% | 298 |
| 12 May 2026 | 89.6% | 303 |
Frequently asked questions
What is the current water level of Chanza?
As of July 27, 2026, Chanza is at 70.4% of its capacity, holding approximately 238 hm³ of water, according to embalses.net data.
Is Chanza reservoir full?
No. As of July 27, 2026, Chanza is within its normal operating range at 70.4% of its capacity, so it is not full.
Is the water level at Chanza rising or falling?
The level at Chanza is falling — it dropped 1.8 percentage points over the latest week on record.
How much water can Chanza hold?
Chanza has a total capacity of 338 hm³, of which about 304 hm³ is usable storage.
Where is Chanza reservoir located?
Chanza is located in Huelva, Andalusia, Spain, within the Guadiana basin (coordinates 37.600°N, 7.454°W).
What is Chanza used for?
Chanza is used primarily for multiple purposes, and is managed by CHSU.