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NormalHydroelectric

BELO MONTE

Pará · AMAZONAS

Useful capacity

610.72 hm³

Coordinates

3.126°S, 51.775°W

Operator

ONS

77.0% of useful capacity

Current fill

77.0%

of useful capacity

Normal

vs 7 days ago

-4.4 pp

losing

vs 1 year ago

+39.4 pp

year-over-year

7-day trend

↓

falling

Drought context

Storage vs October average

128%of normal

77.0% full on 2026-10-26, against an average of 60.0% for October across 2 years of readings (+17.0 points).

Rain over the last three months · 11 October 2026

Extremely dry

In the three months to 11 October 2026 the area around BELO MONTE had extremely little rain for the season, a shortfall seen about one year in forty. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −2.05). Rain, not storage. Brazil drought figures →

Catchment Weather

Past 30 days + 14-day forecast · Open-Meteo

Technical specifications

Total capacity2,276 hm³
Usable capacity610.72 hm³
Primary useHydroelectric
OperatorONS
RiverXINGU
ProvincePará
River basinAMAZONAS
Data source:ONS – Operador Nacional do Sistema Elétrico·Last reading: 2026-10-26

Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 3.126°S, 51.775°W · Open in Google Maps

About BELO MONTE

As of October 26, 2026, BELO MONTE is at 77.0% of useful capacity, holding 470.3 hm³ of 610.72 hm³. Of the 2,276 hm³ total capacity, that is 20.7%. At this level the reservoir is within its normal operating range.

Over the most recent week on record the fill level has fallen by 4.4 percentage points, and it is 39.4 points above its level on the same date a year earlier.

Across the readings we hold for BELO MONTE — 65 data points between October 26, 2025 and October 26, 2026 — the level has ranged from a low of 26.3% (April 10, 2026) to a high of 102.5% (August 21, 2026). On average the reservoir is fullest around August and at its lowest around April.

It is operated by ONS primarily for hydroelectric power. It lies within the AMAZONAS basin at 3.126°S, 51.775°W.

Key facts

Current fill level
77.0% of useful capacity
Water stored
470.3 hm³
Total capacity
2,276 hm³
Usable capacity
610.72 hm³
7-day change
▼ 4.4 pp
Year-on-year
▲ 39.4 pp
Primary use
Hydroelectric power
River
XINGU
River basin
AMAZONAS
Operator
ONS
Coordinates
3.126°S, 51.775°W
Last updated
October 26, 2026

Recent readings

DateFill levelVolume (hm³)
26 Oct 202677.0%470.3
25 Oct 202676.8%468.8
24 Oct 202677.7%474.3
23 Oct 202677.9%475.6
22 Oct 202678.5%479.7
21 Oct 202681.2%495.9
20 Oct 202681.0%494.6
19 Oct 202681.4%497.3
18 Oct 202682.5%504.1
17 Oct 202683.9%512.3
16 Oct 202684.1%513.6
15 Oct 202684.8%517.8

Nearby reservoirs