State · Brazil
Rondônia
28.3% average fill
Reservoirs
4
Volume stored
2,548 hm³
Total capacity
9,001 hm³
Low level
1
Loading map…
Reservoirs
1 basinSAMUEL
Rondônia
Fill level
66.1%
1686 hm³
/ 3,493.44 cap.
JIRAU
Rondônia
Fill level
27.1%
410 hm³
/ 2,746.73 cap.
SANTO ANTONIO
Rondônia
Fill level
51.9%
254 hm³
/ 2,282.8 cap.
RONDON II
Rondônia
Fill level
69.3%
198 hm³
/ 478.29 cap.
About reservoirs in Rondônia
As of July 28, 2026, the reservoirs we track across Rondônia that report live levels hold roughly 2,548 hm³ of water — about 28.3% of their combined capacity. Taken together, Rondônia's reservoirs are low.
Across the region, 1 is low. RONDON II is the fullest at 69.3%, while JIRAU is the lowest at 27.1%.
Over the most recent week on record, 3 reservoirs fell across Rondônia.
Storage figures for Rondônia come from ONS; the most recent reading is from July 28, 2026. Each reservoir below links to its own page with full history and seasonal context.
Rondônia at a glance
- Reservoirs tracked
- 4
- Average fill
- 28.3%
- Water stored
- 2,548 hm³
- Combined capacity
- 9,001 hm³
- Fullest
- RONDON II (69.3%)
- Lowest
- JIRAU (27.1%)
- Last updated
- July 28, 2026
Frequently asked questions
How full are reservoirs in Rondônia right now?
As of July 28, 2026, the reservoirs tracked in Rondônia that report live levels are 28.3% full overall, holding about 2,548 hm³ of water.
How many reservoirs are there in Rondônia?
reservoirs.earth tracks 4 reservoirs in Rondônia, with a combined storage capacity of 9,001 hm³.
Which reservoir in Rondônia is the fullest?
RONDON II is currently the fullest reservoir in Rondônia, at 69.3% of capacity.
Which reservoir in Rondônia is the lowest?
JIRAU is currently the lowest in Rondônia, at 27.1% of capacity.
Where does the reservoir data for Rondônia come from?
All storage figures for Rondônia come from ONS, an official source, last updated July 28, 2026.