Officials believe that driver skidded off the road, hit a pole and flipped around backwards, losing control of the vehicle before entering the water.
"We were concerned about the water rising and the fact that he was having trouble staying on the vehicle," said HFD Sr. Capt. Curt Williams. "That's why there are a lot of extra people. In case he did go into the water, we were prepared for him to go downstream."
Firefighters say the tow truck driver had mild hypothermia and was transported to an area hospital. They believe weather and speed may have contributed to this accident.