Boating Hazards

Community Edits to Nav Charts are important to me and to other boaters! I thought I would bring this up since Hurricane Matthew paid us a visit. Shoaling changes, new hazards emerge every year. I know I have found a few new shoals over the years as inlets and waterways have changed due to heavy tides, storms, etc… What are a few of anyone’s experiences with water hazards that just happened to be there???