MARIMBONDO
Minas Gerais · GRANDE
Capacity
6,150 hm³
Coordinates
-20.304°N, 49.193°W
Operator
ONS
Current fill
68.9%vs 7 days ago
-3.7%losing
vs 1 year ago
+14.4%year-over-year
7-day trend
↓falling
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 June 10, 2026, MARIMBONDO is filled to 68.9% of its total capacity, holding roughly 3,625 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 fallen by 3.7 percentage points, and it is 14.4 points above its level on the same date a year earlier.
Across the readings we hold for MARIMBONDO — 52 data points between June 27, 2025 and June 10, 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
- 68.9%
- Water stored
- 3,625 hm³
- Total capacity
- 6,150 hm³
- Usable capacity
- 5,260 hm³
- 7-day change
- ▼ 3.7 pts
- Year-on-year
- ▲ 14.4 pts
- Primary use
- Hydroelectric power
- River
- GRANDE
- River basin
- GRANDE
- Operator
- ONS
- Coordinates
- 20.304°S, 49.193°W
- Last updated
- June 10, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 10 Jun 2026 | 68.9% | 3,625 |
| 5 Jun 2026 | 72.6% | 3,818 |
| 29 May 2026 | 73.5% | 3,866 |
| 22 May 2026 | 70.5% | 3,710 |
| 15 May 2026 | 71.9% | 3,784 |
| 8 May 2026 | 74.9% | 3,941 |
| 1 May 2026 | 77.8% | 4,093 |
| 24 Apr 2026 | 83.1% | 4,372 |
| 17 Apr 2026 | 87.8% | 4,620 |
| 10 Apr 2026 | 87.9% | 4,624 |
| 3 Apr 2026 | 87.2% | 4,588 |
| 27 Mar 2026 | 85.8% | 4,512 |
Frequently asked questions
What is the current water level of MARIMBONDO?
As of June 10, 2026, MARIMBONDO is at 68.9% of its capacity, holding approximately 3,625 hm³ of water, according to ONS – Operador Nacional do Sistema Elétrico data.
Is MARIMBONDO reservoir full?
No. As of June 10, 2026, MARIMBONDO is within its normal operating range at 68.9% of its capacity, so it is not full.
Is the water level at MARIMBONDO rising or falling?
The level at MARIMBONDO is falling — it dropped 3.7 percentage points over the latest week on record.
How much water can MARIMBONDO hold?
MARIMBONDO has a total capacity of 6,150 hm³, of which about 5,260 hm³ is usable storage.
Where is MARIMBONDO reservoir located?
MARIMBONDO is located in Minas Gerais, Brazil, within the GRANDE basin (coordinates 20.304°S, 49.193°W).
What is MARIMBONDO used for?
MARIMBONDO is used primarily for hydroelectric power, and is managed by ONS.