I need your input on controlling dam erosion, getting grass or ground cover growing this fall.

Anybody know how much Hydroseeding or Hydromulching costs? A guy mentioned that might be an avenue--expensive????

I need to get something growing on my new dam...outside & inside slopes. We've had some rain over the past couple of weeks and my mostly clay dam is "rutting" and silting pretty badly. Not much top soil to help a grass hold onto.
I read some archived posts here about broadcasting
a mix of rye & bermuda.
Anyone ever use the landscaper mesh material?

Thanks.
GlenB