ONS Subsystem · Brazil
SUL
76.4% average fill
Reservoirs
21
Volume stored
14,862 hm³
Usable capacity
19,454 hm³
Low level
1
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All reservoirs
21 reservatóriosSALTO SANTIAGO
Paraná
Fill level
73.0%
2,973 hm³
/ 4,074.27 useful cap.
G. B. MUNHOZ
Paraná
Fill level
86.4%
3,118 hm³
/ 3,609.26 useful cap.
ITÁ
Rio Grande do Sul
Fill level
54.2%
421 hm³
/ 777.54 useful cap.
BARRA GRANDE
Santa Catarina
Fill level
90.7%
1,856 hm³
/ 2,046.59 useful cap.
PASSO REAL
Rio Grande do Sul
Fill level
63.7%
2,171 hm³
/ 3,409.2 useful cap.
SALTO CAXIAS
Paraná
Fill level
54.7%
148.3 hm³
/ 271.19 useful cap.
MACHADINHO
Santa Catarina
Fill level
67.1%
710.9 hm³
/ 1,059 useful cap.
SEGREDO
Paraná
Fill level
77.5%
297.6 hm³
/ 383.89 useful cap.
GOV JAYME CANET JR
Paraná
Fill level
87.1%
580.8 hm³
/ 667 useful cap.
CAMPOS NOVOS
Santa Catarina
Fill level
85.3%
144.4 hm³
/ 169.32 useful cap.
FOZ CHAPECO
Rio Grande do Sul
Fill level
36.7%
28.9 hm³
/ 78.81 useful cap.
PASSO FUNDO
Rio Grande do Sul
Fill level
69.1%
867.6 hm³
/ 1,255.82 useful cap.
SALTO OSORIO
Paraná
Fill level
91.0%
363.9 hm³
/ 399.75 useful cap.
SAO ROQUE
Santa Catarina
Fill level
102.5%
470.3 hm³
/ 458.95 useful cap.
SANTA CLARA-PR
Paraná
Fill level
104.6%
272.8 hm³
/ 260.86 useful cap.
ITAUBA
Rio Grande do Sul
Fill level
75.2%
112.2 hm³
/ 149.08 useful cap.
D. FRANCISCA
Rio Grande do Sul
Fill level
89.3%
56 hm³
/ 62.75 useful cap.
GARIBALDI
Santa Catarina
Fill level
104.3%
66.8 hm³
/ 64 useful cap.
G. P. SOUZA
Paraná
Fill level
83.6%
167.2 hm³
/ 199.92 useful cap.
SAO JOSE
Rio Grande do Sul
Fill level
88.7%
21 hm³
/ 23.72 useful cap.
BAIXO IGUACU
Paraná
Fill level
43.0%
14.3 hm³
/ 33.22 useful cap.
About reservoirs in SUL
As of October 30, 2026, the reservoirs we track across SUL that report live levels hold roughly 14,862 hm³ of water — about 76.4% of their combined capacity. Taken together, SUL's reservoirs are within their normal operating range.
Across the region, 1 is low. SANTA CLARA-PR is the fullest at 104.6%, while FOZ CHAPECO is the lowest at 36.7%.
Over the most recent week on record, 13 reservoirs rose and 4 reservoirs fell across SUL.
Storage figures for SUL come from ONS; the most recent reading is from October 30, 2026. Each reservoir below links to its own page with full history and seasonal context.
SUL at a glance
- Reservoirs tracked
- 21
- Average fill
- 76.4%
- Water stored
- 14,862 hm³
- Combined capacity
- 19,454 hm³
- Fullest
- SANTA CLARA-PR (104.6%)
- Lowest
- FOZ CHAPECO (36.7%)
- Last updated
- October 30, 2026