Hello Bill welcome to the forum! :Thumbs:
That's a pretty steep slope, are you just looking for ideas on what to plant on the bank to keep it from eroding, or looking for advice on terracing it to break up the slope? How much water flow comes down the creek and how often? That is, does it fill with water for even short period after a heavy rain.
As far as planting on that steep slope, you're going to want something with a thick root system that spreads out fast, also need to know the light conditions, get something that suited for how much sun or shade it gets. I'd talk to a local nursery, or green house, they'll be able to give you ideas for what to try & grow there. Another tip, if you can look around your local enviroment and see what's growing in similiar areas naturally, native species will thrive better than an import.
I do remodeling myself, so that's about my .02¢ I'm sure we got some real landscapers around here that can give you some specific plant recommendation. :Thumbs: