← GRANDE
NormalHydroelectric

IGARAPAVA

São Paulo · GRANDE

Useful capacity

14.61 hm³

Coordinates

19.990°S, 47.754°W

Operator

ONS

54.5% of useful capacity

Current fill

54.5%

of useful capacity

Normal

vs 7 days ago

0.0 pp

stable

vs 1 year ago

+39.8 pp

year-over-year

7-day trend

→

stable

Drought context

Storage vs October average

147%of normal

54.5% full on 2026-10-26, against an average of 37.2% for October across 2 years of readings (+17.3 points).

Rain over the last three months · 11 October 2026

Near normal

In the three months to 11 October 2026 the area around IGARAPAVA 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 +0.77). Rain, not storage. Brazil drought figures →

Catchment Weather

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

Technical specifications

Total capacity480 hm³
Usable capacity14.61 hm³
Primary useHydroelectric
OperatorONS
ProvinceSão Paulo
River basinGRANDE
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. 19.990°S, 47.754°W · Open in Google Maps

About IGARAPAVA

As of October 26, 2026, IGARAPAVA is at 54.5% of useful capacity, holding 8 hm³ of 14.61 hm³. Of the 480 hm³ total capacity, that is 1.7%. 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 39.8 points above its level on the same date a year earlier.

Across the readings we hold for IGARAPAVA — 65 data points between October 26, 2025 and October 26, 2026 — the level has ranged from a low of 9.9% (November 28, 2025) to a high of 100.0% (April 17, 2026). On average the reservoir is fullest around April and at its lowest around November.

It is operated by ONS primarily for hydroelectric power. It lies within the GRANDE basin at 19.990°S, 47.754°W.

Key facts

Current fill level
54.5% of useful capacity
Water stored
8 hm³
Total capacity
480 hm³
Usable capacity
14.61 hm³
7-day change
No change
Year-on-year
▲ 39.8 pp
Primary use
Hydroelectric power
River basin
GRANDE
Operator
ONS
Coordinates
19.990°S, 47.754°W
Last updated
October 26, 2026

Recent readings

DateFill levelVolume (hm³)
26 Oct 202654.5%8
25 Oct 202677.1%11.3
24 Oct 202674.6%10.9
23 Oct 202667.1%9.8
22 Oct 202692.4%13.5
21 Oct 202657.0%8.3
20 Oct 202649.5%7.2
19 Oct 202654.5%8
18 Oct 202689.9%13.1
17 Oct 202647.0%6.9
16 Oct 202654.5%8
15 Oct 202672.1%10.5

Nearby reservoirs