To stop water flooding into your driveway, you can set up a barrier using a tarpaulin and sandbags. To make the sandbags, fill up some plastic bags with sand and tie the ends. Make about four and evenly space them out on the edge of your tarp. Then fold the tarp over them. Now that you have your barrier, line it up at the entrance of your driveway to stop any rainwater or flood water running in. If you have a drainage grate, make sure you line the tarp behind it so the water can still drain off. If you don't have one, then angle the tarp to guide the water to where you want it.