I'm searching for a tool that allows for a polyline to be split by creating a perpendicular line from the nearest point. This would be used to break up a river polyline to determine the reach and river mile at each diversion point. While I could manually split the river polyline with the editor, this would become a very tedious task if there were hundreds of diversion points within a section of a river. I have attempted to use the near tool, but not having any success. Any thoughts on this? Thanks!