If you encounter water over the road way, play it safe. The folks at ATXFloods.com try to keep their data as up to date a possible, but if you see water on the road way, turn around don't drown.
It only takes 6 inches of water to knock a person off their feet and 2 feet of water can carry your car away. Never drive into a flooded roadway; the depth of the water can be very misleading and deadly in the dark.
If you live near, or drive through a low water crossing on a frequent basis, you should plan alternate routes around the crossing. If a crossing stands between you and your home, find a safe place to wait it out.