MARIMBONDO
Minas Gerais · GRANDE
Useful capacity
5,260 hm³
Coordinates
20.304°S, 49.193°W
Operator
ONS
49.1% of useful capacity
Current fill
49.1%of useful capacity
vs 7 days ago
0.0 ppstable
vs 1 year ago
+21.2 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
127%of normal
49.1% full on 2026-10-26, against an average of 38.8% for October across 2 years of readings (+10.3 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 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 +0.34). 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 |
| Province | Minas Gerais |
| River basin | GRANDE |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 20.304°S, 49.193°W · Open in Google Maps
About MARIMBONDO
As of October 26, 2026, MARIMBONDO is at 49.1% of useful capacity, holding 2,583 hm³ of 5,260 hm³. Of the 6,150 hm³ total capacity, that is 42.0%. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (+0.0 pp), and it is 21.2 points above its level on the same date a year earlier.
Across the readings we hold for MARIMBONDO — 65 data points between October 26, 2025 and October 26, 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
- 49.1% of useful capacity
- Water stored
- 2,583 hm³
- Total capacity
- 6,150 hm³
- Usable capacity
- 5,260 hm³
- 7-day change
- No change
- Year-on-year
- ▲ 21.2 pp
- Primary use
- Hydroelectric power
- River basin
- GRANDE
- Operator
- ONS
- Coordinates
- 20.304°S, 49.193°W
- Last updated
- October 26, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 26 Oct 2026 | 49.1% | 2,583 |
| 25 Oct 2026 | 49.7% | 2,615 |
| 24 Oct 2026 | 50.1% | 2,637 |
| 23 Oct 2026 | 50.1% | 2,634 |
| 22 Oct 2026 | 50.2% | 2,641 |
| 21 Oct 2026 | 49.9% | 2,625 |
| 20 Oct 2026 | 49.6% | 2,609 |
| 19 Oct 2026 | 49.1% | 2,583 |
| 18 Oct 2026 | 49.3% | 2,593 |
| 17 Oct 2026 | 49.3% | 2,593 |
| 16 Oct 2026 | 48.9% | 2,571 |
| 15 Oct 2026 | 48.8% | 2,567 |