M. MORAES
Minas Gerais · GRANDE
Capacity
4,040 hm³
Coordinates
-20.285°N, 47.063°W
Operator
ONS
73.6% full
Current fill
73.6%vs 7 days ago
+1.3%gaining
vs 1 year ago
N/A7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 4,040 hm³ |
| Usable capacity | 2,500 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. -20.285, -47.063 · Open in Google Maps
About M. MORAES
As of September 9, 2026, M. MORAES is filled to 73.6% of its total capacity, holding roughly 1,839 hm³ of water out of a maximum 4,040 hm³. At this level the reservoir is within its normal operating range. Of that total, about 2,500 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+1.3 pts).
Across the readings we hold for M. MORAES — 52 data points between September 26, 2025 and September 9, 2026 — the level has ranged from a low of 63.4% (December 12, 2025) to a high of 86.9% (May 15, 2026). On average the reservoir is fullest around May and at its lowest around December.
It is operated by ONS primarily for hydroelectric power. It lies within the GRANDE basin at 20.285°S, 47.063°W.
Key facts
- Current fill level
- 73.6%
- Water stored
- 1,839 hm³
- Total capacity
- 4,040 hm³
- Usable capacity
- 2,500 hm³
- 7-day change
- ▲ 1.3 pts
- Primary use
- Hydroelectric power
- River
- GRANDE
- River basin
- GRANDE
- Operator
- ONS
- Coordinates
- 20.285°S, 47.063°W
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 73.5% | 1,839 |
| 4 Sep 2026 | 72.3% | 1,807 |
| 28 Aug 2026 | 78.2% | 1,954 |
| 21 Aug 2026 | 80.0% | 2,000 |
| 14 Aug 2026 | 79.9% | 1,998 |
| 7 Aug 2026 | 77.6% | 1,940 |
| 31 Jul 2026 | 76.0% | 1,901 |
| 24 Jul 2026 | 74.7% | 1,866 |
| 17 Jul 2026 | 74.5% | 1,862 |
| 10 Jul 2026 | 75.0% | 1,876 |
| 3 Jul 2026 | 76.7% | 1,917 |
| 26 Jun 2026 | 78.0% | 1,949 |