Ask Mr. Smarty Plants

Well ... you have two fairly significant challenges here.

I think you probably already know that there is no such thing as a highly deer resistant shrub.  When they are hungry enough they will eat whatever is there, whether it is fuzzy, thorny or even poisonous.  Once that is all gone, they ring your doorbell and ask for lettuce!  I shouldn't joke about them ... they are a huge problem all over North America ... this Green Guru has battled them in gardens in NJ, Pennsylvania, Texas and Ontario.  The damage they do to the cultivated landscape is enormous, but the damage they are doing to the understory and forest floor of the woodland ecosystem in the northeast now will affect the future of that ecosystem in ways that it is hard to imagine at this point.

You may find these links helpful.  One is an article by Horticulture magazine and the other a list for your area put together by Rutgers.

Your second challenge is the swale.  As you say, you are looking for plants that are adapted to the dry conditions that persist most of the time but can handle periods of extreme wetness.  It so happens that planting a bioswale or rain garden is a very effective way to slow down stormwater run-off so that the water will infiltrate the soil instead of washing soil and pollutants into sewers and ultimately streams and lakes. 

The Brooklyn Botanic Garden has published a very informative article about rain gardens and how to construct them as well as a plant list you will find helpful. Hopefully, you will find some plants on both lists!

You can find more information about rain gardens and sustainable gardening at the Landscape for Life website.

Good luck!