ONS Subsystem · Brazil
SUL
32.9% average fill
Reservoirs
19
Volume stored
15,349 hm³
Total capacity
46,592 hm³
Low level
1
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All reservoirs
19 reservatóriosSALTO SANTIAGO
Paraná
Fill level
72.6%
2986 hm³
/ 6,775 cap.
G. B. MUNHOZ
Paraná
Fill level
87.6%
3333 hm³
/ 5,779 cap.
ITÁ
Rio Grande do Sul
Fill level
52.1%
415 hm³
/ 5,100 cap.
BARRA GRANDE
Santa Catarina
Fill level
91.2%
1999 hm³
/ 4,904.45 cap.
PASSO REAL
Rio Grande do Sul
Fill level
64.3%
2157 hm³
/ 3,646 cap.
SALTO CAXIAS
Paraná
Fill level
53.2%
145 hm³
/ 3,573 cap.
MACHADINHO
Santa Catarina
Fill level
76.8%
811 hm³
/ 3,340 cap.
SEGREDO
Paraná
Fill level
77.5%
298 hm³
/ 2,950 cap.
GOV JAYME CANET JR
Paraná
Fill level
97.4%
650 hm³
/ 2,137 cap.
PASSO FUNDO
Rio Grande do Sul
Fill level
75.0%
1054 hm³
/ 1,589 cap.
FOZ CHAPECO
Rio Grande do Sul
Fill level
44.7%
35 hm³
/ 1,513 cap.
CAMPOS NOVOS
Santa Catarina
Fill level
73.6%
95 hm³
/ 1,477 cap.
SALTO OSORIO
Paraná
Fill level
92.0%
371 hm³
/ 1,124 cap.
SAO ROQUE
Santa Catarina
Fill level
105.0%
482 hm³
/ 795.67 cap.
ITAUBA
Rio Grande do Sul
Fill level
62.8%
99 hm³
/ 620 cap.
SANTA CLARA-PR
Paraná
Fill level
105.0%
275 hm³
/ 431 cap.
D. FRANCISCA
Rio Grande do Sul
Fill level
105.0%
66 hm³
/ 330 cap.
GARIBALDI
Santa Catarina
Fill level
105.0%
67 hm³
/ 296 cap.
BAIXO IGUACU
Paraná
Fill level
35.0%
12 hm³
/ 211.92 cap.
About reservoirs in SUL
As of September 15, 2026, the reservoirs we track across SUL that report live levels hold roughly 15,349 hm³ of water — about 32.9% of their combined capacity. Taken together, SUL's reservoirs are low.
Across the region, 1 is low. SAO ROQUE is the fullest at 105.0%, while BAIXO IGUACU is the lowest at 35.0%.
Over the most recent week on record, 2 reservoirs rose and 5 reservoirs fell across SUL.
Storage figures for SUL come from ONS; the most recent reading is from September 15, 2026. Each reservoir below links to its own page with full history and seasonal context.
SUL at a glance
- Reservoirs tracked
- 19
- Average fill
- 32.9%
- Water stored
- 15,349 hm³
- Combined capacity
- 46,592 hm³
- Fullest
- SAO ROQUE (105.0%)
- Lowest
- BAIXO IGUACU (35.0%)
- Last updated
- September 15, 2026