(CNN) Heavy rains flooded a parking garage at Dallas Love Field Airport, submerging dozens cars and trucks -- some up to the rooftops.

Will Kolb told CNN that he had to drive through about 2 feet of water to get out of the garage early Wednesday morning. He was parked at an upper level, so he didn't have any damage.

He was picking people up at the airport and the flooding happened while he was inside.

"(I) was in airport for an hour," Kolb said. "This all happened within that time."

Crews are still working to pump water out of the garage, but airport spokesman Chris Perry told CNN that officials estimated that more than 30 vehicles were under water. A later city statement said inspectors were looking at the airport stormwater drainage system to see whether there were obstructions.

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