Lou, I don't know about the area you are in so my answer might not be appropriate to your "neighborhood". I normally toss brushpiles and rocks in runoff areas to trap silt, sand, leaves, etc. and to reduce erosion. Of course, we are back in the brush where aesthetics don't matter as much as effectiveness. But, I don't live on the land and no way I could do that at my home in the Dallas/Fort Worth metroplex. I would be concerned with anything that alters water so it had a milky appearance. I assume the Hydrology firm has OK'd it though.
