PORTO PRIMAVERA
São Paulo · PARANA
Useful capacity
4,294 hm³
Coordinates
22.475°S, 52.952°W
Operator
ONS
55.9% of useful capacity
Current fill
55.9%of useful capacity
vs 21 Oct 2026
-48.2 pplosing
vs 1 year ago
-16.0 ppyear-over-year
Trend
↓falling
Drought context
Storage vs October average
75%of normal
55.9% full on 2026-10-26, against an average of 74.4% for October across 2 years of readings (-18.5 points).
Rain over the last three months · 11 October 2026
Very wet
In the three months to 11 October 2026 the area around PORTO PRIMAVERA had much more rain than normal, seen about one year in fifteen. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index +1.98). Rain, not storage. Brazil drought figures →
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 20,001 hm³ |
| Usable capacity | 4,294 hm³ |
| Primary use | Hydroelectric |
| Operator | ONS |
| River | PARANÁ |
| Province | São Paulo |
| River basin | PARANA |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 22.475°S, 52.952°W · Open in Google Maps
About PORTO PRIMAVERA
As of October 26, 2026, PORTO PRIMAVERA is at 55.9% of useful capacity, holding 2,398 hm³ of 4,294 hm³. Of the 20,001 hm³ total capacity, that is 12.0%. At this level the reservoir is within its normal operating range.
Since October 21, 2026 the fill level has fallen by 48.2 percentage points, and it is 16.0 points below its level on the same date a year earlier.
Across the readings we hold for PORTO PRIMAVERA — 57 data points between October 17, 2025 and October 26, 2026 — the level has ranged from a low of 23.9% (February 20, 2026) to a high of 104.0% (December 31, 2025). On average the reservoir is fullest around January and at its lowest around September.
It is operated by ONS primarily for hydroelectric power. It lies within the PARANA basin at 22.475°S, 52.952°W.
Key facts
- Current fill level
- 55.9% of useful capacity
- Water stored
- 2,398 hm³
- Total capacity
- 20,001 hm³
- Usable capacity
- 4,294 hm³
- Change since October 21, 2026
- ▼ 48.2 pp
- Year-on-year
- ▼ 16.0 pp
- Primary use
- Hydroelectric power
- River
- PARANÁ
- River basin
- PARANA
- Operator
- ONS
- Coordinates
- 22.475°S, 52.952°W
- Last updated
- October 26, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 26 Oct 2026 | 55.9% | 2,398 |
| 25 Oct 2026 | 27.9% | 1,197 |
| 24 Oct 2026 | 47.8% | 2,054 |
| 23 Oct 2026 | 67.9% | 2,914 |
| 22 Oct 2026 | 87.9% | 3,776 |
| 21 Oct 2026 | 104.0% | 4,467 |
| 9 Oct 2026 | 104.0% | 4,467 |
| 2 Oct 2026 | 104.0% | 4,467 |
| 25 Sep 2026 | 79.9% | 3,431 |
| 18 Sep 2026 | 75.9% | 3,259 |
| 11 Sep 2026 | 43.9% | 1,883 |
| 4 Sep 2026 | 23.9% | 1,026 |