MARIMBONDO
Minas Gerais · GRANDE
Capacity
6,150 hm³
Coordinates
-20.304°N, 49.193°W
Operator
ONS
52.2% full
Current fill
52.2%vs 7 days ago
+1.1%gaining
vs 1 year ago
N/A7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 6,150 hm³ |
| Usable capacity | 5,260 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | GRANDE |
| Province | Minas Gerais |
| River basin | GRANDE |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -20.304, -49.193 · Open in Google Maps
About MARIMBONDO
As of September 9, 2026, MARIMBONDO is filled to 52.2% of its total capacity, holding roughly 2,743 hm³ of water out of a maximum 6,150 hm³. At this level the reservoir is within its normal operating range. Of that total, about 5,260 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+1.1 pts).
Across the readings we hold for MARIMBONDO — 52 data points between September 26, 2025 and September 9, 2026 — the level has ranged from a low of 18.6% (January 9, 2026) to a high of 87.9% (April 10, 2026). On average the reservoir is fullest around April and at its lowest around December.
It is operated by ONS primarily for hydroelectric power. It lies within the GRANDE basin at 20.304°S, 49.193°W.
Key facts
- Current fill level
- 52.2%
- Water stored
- 2,743 hm³
- Total capacity
- 6,150 hm³
- Usable capacity
- 5,260 hm³
- 7-day change
- ▲ 1.1 pts
- Primary use
- Hydroelectric power
- River
- GRANDE
- River basin
- GRANDE
- Operator
- ONS
- Coordinates
- 20.304°S, 49.193°W
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 52.1% | 2,743 |
| 4 Sep 2026 | 51.0% | 2,683 |
| 28 Aug 2026 | 54.4% | 2,861 |
| 21 Aug 2026 | 57.2% | 3,007 |
| 14 Aug 2026 | 58.7% | 3,089 |
| 7 Aug 2026 | 61.8% | 3,253 |
| 31 Jul 2026 | 63.4% | 3,337 |
| 24 Jul 2026 | 62.0% | 3,260 |
| 17 Jul 2026 | 62.8% | 3,302 |
| 10 Jul 2026 | 63.6% | 3,344 |
| 3 Jul 2026 | 64.6% | 3,400 |
| 26 Jun 2026 | 62.5% | 3,288 |