The rain has started to return in Northern California and will continue over the next few days, but officials aren't as concerned about the upcoming weather so much as the damage already done to the Oroville Dam's already compromised main spillway.

The risk of flooding has dropped substantially, but Butte County Sheriff Kory Honea warned residents Wednesday that they remain in "an emergency situation."

Officials ban drones and other aircraft from Oroville Dam airspace

The Federal Aviation Administration has issued a temporary ban on flights around the Oroville Dam to allow emergency aircraft to operate safely.

“We implemented temporary flight restrictions that prohibit aircraft operations from the ground up to 4,500 feet altitude within a trapezoidal area around the dam,” said Ian Gregor, a spokesman for the FAA in Los Angeles.

The flight restriction includes recreational drones, according to the California Department of Water Resources. The restriction is scheduled to end May 17.

The ban comes as crews continue to conduct aerial surveys of the erosion on the emergency spillway.

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