M. MORAES
Minas Gerais · GRANDE
Capacity
4,040 hm³
Coordinates
-20.285°N, 47.063°W
Operator
ONS
75.2% full
Current fill
75.2%vs 7 days ago
+0.4%gaining
vs 1 year ago
+0.1%year-over-year
7-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 July 28, 2026, M. MORAES is filled to 75.2% of its total capacity, holding roughly 1,880 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 (+0.4 pts), and it sits close to where it was a year earlier.
Across the readings we hold for M. MORAES — 52 data points between August 15, 2025 and July 28, 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
- 75.2%
- Water stored
- 1,880 hm³
- Total capacity
- 4,040 hm³
- Usable capacity
- 2,500 hm³
- 7-day change
- ▲ 0.4 pts
- Year-on-year
- ▲ 0.1 pts
- Primary use
- Hydroelectric power
- River
- GRANDE
- River basin
- GRANDE
- Operator
- ONS
- Coordinates
- 20.285°S, 47.063°W
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 75.2% | 1,880 |
| 24 Jul 2026 | 74.8% | 1,871 |
| 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 |
| 19 Jun 2026 | 79.1% | 1,977 |
| 12 Jun 2026 | 80.4% | 2,009 |
| 5 Jun 2026 | 82.0% | 2,051 |
| 29 May 2026 | 84.8% | 2,120 |
| 22 May 2026 | 86.3% | 2,157 |
| 15 May 2026 | 86.8% | 2,171 |
Frequently asked questions
What is the current water level of M. MORAES?
As of July 28, 2026, M. MORAES is at 75.2% of its capacity, holding approximately 1,880 hm³ of water, according to ONS – Operador Nacional do Sistema Elétrico data.
Is M. MORAES reservoir full?
No. As of July 28, 2026, M. MORAES is within its normal operating range at 75.2% of its capacity, so it is not full.
Is the water level at M. MORAES rising or falling?
The level at M. MORAES has been broadly stable over the latest week on record (+0.4 points).
How much water can M. MORAES hold?
M. MORAES has a total capacity of 4,040 hm³, of which about 2,500 hm³ is usable storage.
Where is M. MORAES reservoir located?
M. MORAES is located in Minas Gerais, Brazil, within the GRANDE basin (coordinates 20.285°S, 47.063°W).
What is M. MORAES used for?
M. MORAES is used primarily for hydroelectric power, and is managed by ONS.