That amount of lava could fill 45,400 Olympic-sized swimming pools and more than 11 million dump trucks, and it could cover Manhattan Island to a depth of more than six feet.
While that might seem like a lot, the USGS pointed out that it's only half of the lava estimated to have erupted from Mauna Loa in 1984.
To date, the lava has destroyed more than 600 homes. It's covered more than 5,000 acres and is up to 20 feet deep in some places. There's no way to know when the eruption will end or if more lava-spewing vents will open, according to USGS scientists.
The Associated Press contributed to this report.