Crews are monitoring the levee system in Sand Springs and West Tulsa right now as the rising Arkansas River threatens hundreds of homes and many businesses.

National Guardsmen say they've been impressed with how well the levees have held up. County officials say the levees have never held this much water for such a long period of time and they're concerned about more rain later Tuesday afternoon.

A National Guard helicopter delivered sandbags Monday night as a precaution and guardsmen say they put out sandbags Tuesday morning to hold as much water back as possible.

Emergency officials say homes along the river from 65th West Avenue to Newblock Park could flood quickly, so they're encouraging people to evacuate.

Some residents say they're afraid of leaving their homes unattended but officers say they're patrolling the neighborhoods while they are gone.

"When we come and tell you you need to evacuate your home, we will keep an eye on that neighborhood to ward off any looting and be mindful that we may not be able to return for our safety to rescue you. That's not to say we won't try," said Sergeant Shane Tuell.

Tulsa leaders and emergency management officials say they're planning a news conference to give an update around 2 p.m.