What plants thrive in High Saturation areas?

We are going to be regrading our backyard to redirect the flow of water away from the house. The plan is to create a ravine, that runs the length of the back of the house, along the side, and connect to a ravine which runs out to the front of out house.



At the corner, we plan to put in a garden that can really take on water. It will have partial sun but no more then 50% of the time.



We were planing on some wild grasses, but would also like to have some flowers (perennials preferred)



Thanks in advance for your help!

What plants thrive in High Saturation areas?
If my yard wasn't so dry I would love to try these plants.



http://www.nhbirdsnest.com/watergarden_p...

http://www.fs.fed.us/wildflowers/plant-o...



Here is an article for wet planting.



http://landscaping.about.com/od/landscap...
Reply:Here's some info for landscaping wet ground.



http://counties.cce.cornell.edu/Yates/65...



http://www.birdsandblooms.com/Article.as...

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