Reservoir · Antioquia · Colombia · XM
Riogrande II
64.6% full
Capacity
543.75 GWh
Energy stored
351 GWh
River
Grande
Coordinates
6.516°N, 75.456°W
Last updated
2026-10-14
Current fill
64.6%vs 7 days ago
+6.6%gaining
vs 1 year ago
-24.7%year-over-year
7-day trend
↑rising
Drought context
Storage vs October average
75%of normal
64.6% full on 2026-10-14, against an average of 85.8% for October across 6 years of readings (-21.2 points).
Rain over the last three months · 21 September 2026
Severely dry
In the three months to 21 September 2026 the area around Riogrande II had far less rain than normal, a shortfall seen about one year in fifteen. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −1.67). 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: 2026-10-14.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 6.516, -75.456 · Open in Google Maps
About Riogrande II
As of October 14, 2026, Riogrande II is filled to 64.6% of its total capacity, holding roughly 351 GWh of water out of a maximum 544 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 6.6 percentage points, and it is 24.7 points below its level on the same date a year earlier.
Across the readings we hold for Riogrande II — 2113 data points between January 1, 2021 and October 14, 2026 — the level has ranged from a low of 6.6% (March 25, 2024) to a high of 105.0% (May 6, 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
- 64.6%
- Water stored
- 351 GWh
- Total capacity
- 544 GWh
- 7-day change
- ▲ 6.6 pts
- Year-on-year
- ▼ 24.7 pts
- Primary use
- Hydroelectric power
- River
- Grande
- River basin
- Grande
- Operator
- XM
- Coordinates
- 6.516°N, 75.456°W
- Last updated
- October 14, 2026
Recent readings
| Date | Fill level | Volume (GWh) |
|---|---|---|
| 14 Oct 2026 | 64.6% | 351 |
| 13 Oct 2026 | 63.8% | 347 |
| 12 Oct 2026 | 62.0% | 337 |
| 11 Oct 2026 | 60.3% | 328 |
| 10 Oct 2026 | 59.8% | 325 |
| 9 Oct 2026 | 59.1% | 322 |
| 8 Oct 2026 | 58.6% | 319 |
| 7 Oct 2026 | 58.0% | 315 |
| 6 Oct 2026 | 57.3% | 311 |
| 5 Oct 2026 | 56.7% | 308 |
| 4 Oct 2026 | 56.3% | 306 |
| 3 Oct 2026 | 56.0% | 304 |