Reservoir · Valle del Cauca · Colombia · XM
Alto Anchicayá
76.1% full
Capacity
36.48 GWh
Energy stored
28 GWh
River
Anchicayá
Coordinates
3.524°N, 76.868°W
Last updated
2026-07-28
Current fill
76.1%vs 7 days ago
+2.0%gaining
vs 1 year ago
+13.8%year-over-year
7-day trend
↑rising
Data source: XM — Operador del Mercado de Energía — daily useful-energy storage (VoluUtilDiarEner) and useful capacity (CapaUtilDiarEner). Colombia is a hydropower system, so storage is reported as energy (GWh), not water volume; fill % is useful energy ÷ useful capacity. Last reading: 2026-07-28.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 3.524, -76.868 · Open in Google Maps
About Alto Anchicayá
As of July 28, 2026, Alto Anchicayá is filled to 76.1% of its total capacity, holding roughly 28 GWh of water out of a maximum 36 GWh. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has risen by 2.0 percentage points, and it is 13.8 points above its level on the same date a year earlier.
Across the readings we hold for Alto Anchicayá — 1980 data points between January 1, 2021 and July 28, 2026 — the level has ranged from a low of 0.0% (March 19, 2022) to a high of 91.9% (November 25, 2021). On average the reservoir is fullest around November and at its lowest around September.
It is operated by XM primarily for hydroelectric power. It lies within the Anchicayá basin at 3.524°N, 76.868°W.
Key facts
- Current fill level
- 76.1%
- Water stored
- 28 GWh
- Total capacity
- 36 GWh
- 7-day change
- ▲ 2.0 pts
- Year-on-year
- ▲ 13.8 pts
- Primary use
- Hydroelectric power
- River
- Anchicayá
- River basin
- Anchicayá
- Operator
- XM
- Coordinates
- 3.524°N, 76.868°W
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (GWh) |
|---|---|---|
| 28 Jul 2026 | 76.1% | 28 |
| 27 Jul 2026 | 74.1% | 27 |
| 26 Jul 2026 | 81.3% | 30 |
| 25 Jul 2026 | 78.7% | 29 |
| 24 Jul 2026 | 86.3% | 31 |
| 23 Jul 2026 | 85.9% | 31 |
| 22 Jul 2026 | 75.8% | 28 |
| 21 Jul 2026 | 77.8% | 28 |
| 20 Jul 2026 | 84.5% | 31 |
| 19 Jul 2026 | 79.8% | 29 |
| 18 Jul 2026 | 74.8% | 27 |
| 17 Jul 2026 | 70.9% | 26 |
Frequently asked questions
What is the current water level of Alto Anchicayá?
As of July 28, 2026, Alto Anchicayá is at 76.1% of its capacity, holding approximately 28 GWh of water, according to XM — Operador del Mercado de Energía data.
Is Alto Anchicayá reservoir full?
No. As of July 28, 2026, Alto Anchicayá is within its normal operating range at 76.1% of its capacity, so it is not full.
Is the water level at Alto Anchicayá rising or falling?
The level at Alto Anchicayá is rising — it gained 2.0 percentage points over the latest week on record.
How much water can Alto Anchicayá hold?
Alto Anchicayá has a total capacity of 36 GWh.
Where is Alto Anchicayá reservoir located?
Alto Anchicayá is located in Valle del Cauca, Colombia, within the Anchicayá basin (coordinates 3.524°N, 76.868°W).
What is Alto Anchicayá used for?
Alto Anchicayá is used primarily for hydroelectric power, and is managed by XM.