Reservoir · Antioquia · Colombia · XM
Riogrande II
71.2% full
Capacity
543.75 GWh
Energy stored
387 GWh
River
Grande
Coordinates
6.516°N, 75.456°W
Last updated
2026-10-26
Current fill
71.2%vs 7 days ago
+4.1 ppgaining
vs 1 year ago
-17.4 ppyear-over-year
7-day trend
↑rising
Drought context
Storage vs October average
86%of normal
71.2% full on 2026-10-26, against an average of 82.5% for October across 6 years of readings (-11.3 points).
Rain over the last three months · 11 October 2026
Moderately dry
In the three months to 11 October 2026 the area around Riogrande II 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 −1.42). Rain, not storage. Colombia drought figures →
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: 2026-10-26.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 6.516°N, 75.456°W · Open in Google Maps
About Riogrande II
As of October 26, 2026, Riogrande II is filled to 71.2% of its total capacity, holding 387.29 GWh of water out of a maximum 543.75 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 4.1 percentage points, and it is 17.4 points below its level on the same date a year earlier.
Across the readings we hold for Riogrande II — 2053 data points between January 1, 2021 and October 26, 2026 — the level has ranged from a low of 6.6% (March 25, 2024) to a high of 104.9% (October 29, 2021). On average the reservoir is fullest around November and at its lowest around March.
It is operated by XM primarily for hydroelectric power. It lies within the Grande basin at 6.516°N, 75.456°W.
Key facts
- Current fill level
- 71.2% of total capacity
- Water stored
- 387.29 GWh
- Total capacity
- 543.75 GWh
- 7-day change
- ▲ 4.1 pp
- Year-on-year
- ▼ 17.4 pp
- Primary use
- Hydroelectric power
- River basin
- Grande
- Operator
- XM
- Coordinates
- 6.516°N, 75.456°W
- Last updated
- October 26, 2026
Recent readings
| Date | Fill level | Volume (GWh) |
|---|---|---|
| 26 Oct 2026 | 71.2% | 387.29 |
| 25 Oct 2026 | 69.8% | 379.78 |
| 24 Oct 2026 | 69.3% | 376.86 |
| 23 Oct 2026 | 69.2% | 376.5 |
| 22 Oct 2026 | 68.7% | 373.81 |
| 21 Oct 2026 | 68.3% | 371.64 |
| 20 Oct 2026 | 67.7% | 368.16 |
| 19 Oct 2026 | 67.1% | 364.96 |
| 18 Oct 2026 | 66.7% | 362.63 |
| 17 Oct 2026 | 66.2% | 359.75 |
| 16 Oct 2026 | 65.7% | 357.26 |
| 15 Oct 2026 | 65.2% | 354.69 |