To expand on what James mentioned about Jeff looking at the culvert.
Jeff is our contractor. He had constructed a road for us just for the purpose of filling the washout and slide. The road was never fully completed, but is within 50 feet of the grade. The plan is for him to complete the road to the grade, and then fill the hole we put the culvert in.
Due to being private property, we had to get permission from the land owner to use the road, and due to various reasons, that permission never came until a few weeks ago. We are very lucky to have great neighbors to allow this to happen.