I think monkey grass would do just fine, and think it's a great idea. Attractive, very thick, small plant, slow spreading. A row of monkey grass is so thick it would act like a check dam.
I'm glad you said that. My wife had the gardener here today, so we went ahead and thinned the monkey grass and planted a row along the edge. I thought I needed to get something down there ASAP before the rains.
I'm currently using bermudagrass for erosion control, and it works OK. Not real pretty to look at, but works.
I'm torn between bermuda grass and centipede for the area around the pond. But that decision can wait until spring.
