Hostas. They will grow in the street! But, if you have deer in the area, they will devour them. You can try sprinkling cayenne powder on it. That has worked for me.
Many plants are happy with it pretty wet, Pamela. Clethra, Itea and red-twig dogwood are three flowering shrubs that readily come to mind and that I think would be hardy where you are. For perennials, think of Chelone, Ligularia, Lobelia, marsh marigold, Joe Pye weed, many of the irises, and, of course, ferns.