Our rain gardens on either side of the driveway channel runoff into a place where it will be filtered.
Steve dug a drainage ditch across the driveway to channel the water. Make sure it's level, fill in the sides, and put a plastic grate over the top
Dig a deep bowl-shaped hole. 
Fill the hole with gravel. Here, Youda "helps" spread the gravel!
Next, fill it with a spongy planting medium, high in organic material.
Third graders helped us put in the plants 
that filter and soak up the runoff