cleaning the garage after the flood

in Ocean City, New Jersey there was severe flooding, with up to 3 feet of water. because of this, around 8 inches of water got into my garage after the flood went down my Father got to work on cleaning the water out of the garage but he was working alone. We have these plastic floor covers and the water got trapped underneath them and made it very difficult to clean the water out. there is this dip at the middle of the floor, so all of the water was moving there. we had to step on the covers and use this broom with a squeegee on one side and the broom on the other side to sweep the water out right after the water came out from under the covers it took a few hours, but we did it and the garage looked great.