Fargo city administrator, Bruce Grubb, says the city is planning for at least the 10 percent scenario—that says the river would reach 40.3 feet.
"If we over prepare, we're fine with that, we just don't want to risk underpreparing," Grubb said.
On Friday, the flood outlook raised a couple feet—previously the worst-case scenario was looking to be around 39 feet. Now, there's a five percent chance it'll get to 41.4 feet.
"The levels were raised quite substantially," Grubb said.
With a record in 2009 of just under 41 feet, the city says a lot of the work will require volunteers to operate the spiders: the machines making sandbags.