M. MORAES
Minas Gerais · GRANDE
Useful capacity
2,500 hm³
Coordinates
20.285°S, 47.063°W
Operator
ONS
78.4% of useful capacity
Current fill
78.4%of useful capacity
vs 7 days ago
+1.4 ppgaining
vs 1 year ago
+4.5 ppyear-over-year
7-day trend
↑rising
Drought context
Storage vs October average
105%of normal
78.4% full on 2026-10-26, against an average of 74.9% for October across 2 years of readings (+3.5 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around M. MORAES 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 +0.95). Rain, not storage. Brazil drought figures →
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 |
| Province | Minas Gerais |
| River basin | GRANDE |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 20.285°S, 47.063°W · Open in Google Maps
About M. MORAES
As of October 26, 2026, M. MORAES is at 78.4% of useful capacity, holding 1,961 hm³ of 2,500 hm³. Of the 4,040 hm³ total capacity, that is 48.5%. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has risen by 1.4 percentage points, and it is 4.5 points above its level on the same date a year earlier.
Across the readings we hold for M. MORAES — 65 data points between October 26, 2025 and October 26, 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
- 78.4% of useful capacity
- Water stored
- 1,961 hm³
- Total capacity
- 4,040 hm³
- Usable capacity
- 2,500 hm³
- 7-day change
- ▲ 1.4 pp
- Year-on-year
- ▲ 4.5 pp
- Primary use
- Hydroelectric power
- River basin
- GRANDE
- Operator
- ONS
- Coordinates
- 20.285°S, 47.063°W
- Last updated
- October 26, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 26 Oct 2026 | 78.4% | 1,961 |
| 25 Oct 2026 | 77.5% | 1,938 |
| 24 Oct 2026 | 76.5% | 1,912 |
| 23 Oct 2026 | 76.7% | 1,917 |
| 22 Oct 2026 | 76.7% | 1,917 |
| 21 Oct 2026 | 76.5% | 1,912 |
| 20 Oct 2026 | 76.5% | 1,912 |
| 19 Oct 2026 | 77.0% | 1,926 |
| 18 Oct 2026 | 76.9% | 1,922 |
| 17 Oct 2026 | 76.2% | 1,906 |
| 16 Oct 2026 | 75.7% | 1,892 |
| 15 Oct 2026 | 75.0% | 1,876 |