To the person concerned about erosion on the river. I used to work for a dredging company and we were working on a job on the James River in Virgina, near Williamsburg. They had bad erosion of the river banks on that river and they were undergoing a massive bank restoration project. They were bringing in lots of dirt, and grading the banks, and topping it with riprap rock. It was very interesting, but I'm not sure who was paying for it. It could have been a Corps of Engineers funded project, or a State of Virgina funded project. To restore the bank of your property, you will probably want to put out a lot of riprap rock after you fill the dirt. Good luck.