I recently dug a 1/3 acre pond and had a liner installed. I thought my ground was pretty flat but it's not. The pond was dug down with steep sides and the liner installed with the tops buried in a 4' deep trench at native ground level. It is full of water and I am at the very top of the liner on the low side and about to spill over but on the high side I have liner showing and it is unsightly. It is so steep trying to cover with dirt results in it sliding down into the pond. Any ideas how to cover this up? Ideally I would like to plant grass all the way to the waters edge.