MARIMBONDO
Minas Gerais · GRANDE
Capacity
6,150 hm³
Coordinates
-20.304°N, 49.193°W
Operator
ONS
49.5% full
Current fill
49.5%vs 7 days ago
-0.9%losing
vs 1 year ago
N/A7-day trend
→stable
Drought context
Storage vs October average
147%of normal
49.5% full on 2026-10-14, against an average of 33.6% for October across 2 years of readings (+15.9 points).
Rain over the last three months · 21 September 2026
Near normal
In the three months to 21 September 2026 the area around MARIMBONDO had rain close to normal for the season. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −0.11). Rain, not storage. Brazil drought figures →
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 October 14, 2026, MARIMBONDO is filled to 49.5% of its total capacity, holding roughly 2,606 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 (-0.9 pts).
Across the readings we hold for MARIMBONDO — 52 data points between October 31, 2025 and October 14, 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
- 49.5%
- Water stored
- 2,606 hm³
- Total capacity
- 6,150 hm³
- Usable capacity
- 5,260 hm³
- 7-day change
- ▼ 0.9 pts
- Primary use
- Hydroelectric power
- River
- GRANDE
- River basin
- GRANDE
- Operator
- ONS
- Coordinates
- 20.304°S, 49.193°W
- Last updated
- October 14, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 14 Oct 2026 | 49.5% | 2,606 |
| 9 Oct 2026 | 50.5% | 2,654 |
| 2 Oct 2026 | 50.9% | 2,676 |
| 25 Sep 2026 | 53.7% | 2,823 |
| 18 Sep 2026 | 53.7% | 2,826 |
| 11 Sep 2026 | 52.0% | 2,737 |
| 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 |