Reservoir · Antioquia · Colombia · XM
Riogrande II
73.5% full
Capacity
543.46 GWh
Energy stored
399 GWh
River
Grande
Coordinates
6.516°N, 75.456°W
Last updated
2026-07-28
Current fill
73.5%vs 7 days ago
-1.9%losing
vs 1 year ago
+4.5%year-over-year
7-day trend
↓falling
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. 6.516, -75.456 · Open in Google Maps
About Riogrande II
As of July 28, 2026, Riogrande II is filled to 73.5% of its total capacity, holding roughly 399 GWh of water out of a maximum 543 GWh. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has fallen by 1.9 percentage points, and it is 4.5 points above its level on the same date a year earlier.
Across the readings we hold for Riogrande II — 2035 data points between January 1, 2021 and July 28, 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
- 73.5%
- Water stored
- 399 GWh
- Total capacity
- 543 GWh
- 7-day change
- ▼ 1.9 pts
- Year-on-year
- ▲ 4.5 pts
- Primary use
- Hydroelectric power
- River
- Grande
- River basin
- Grande
- Operator
- XM
- Coordinates
- 6.516°N, 75.456°W
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (GWh) |
|---|---|---|
| 28 Jul 2026 | 73.5% | 399 |
| 27 Jul 2026 | 75.4% | 410 |
| 26 Jul 2026 | 77.1% | 419 |
| 25 Jul 2026 | 76.2% | 414 |
| 24 Jul 2026 | 75.2% | 409 |
| 23 Jul 2026 | 73.6% | 400 |
| 22 Jul 2026 | 74.0% | 402 |
| 21 Jul 2026 | 74.2% | 403 |
| 20 Jul 2026 | 73.6% | 400 |
| 19 Jul 2026 | 72.2% | 392 |
| 18 Jul 2026 | 72.0% | 391 |
| 17 Jul 2026 | 72.1% | 392 |
Frequently asked questions
What is the current water level of Riogrande II?
As of July 28, 2026, Riogrande II is at 73.5% of its capacity, holding approximately 399 GWh of water, according to XM — Operador del Mercado de Energía data.
Is Riogrande II reservoir full?
No. As of July 28, 2026, Riogrande II is within its normal operating range at 73.5% of its capacity, so it is not full.
Is the water level at Riogrande II rising or falling?
The level at Riogrande II is falling — it dropped 1.9 percentage points over the latest week on record.
How much water can Riogrande II hold?
Riogrande II has a total capacity of 543 GWh.
Where is Riogrande II reservoir located?
Riogrande II is located in Antioquia, Colombia, within the Grande basin (coordinates 6.516°N, 75.456°W).
What is Riogrande II used for?
Riogrande II is used primarily for hydroelectric power, and is managed by XM.