Herman Beach is one of several beaches delimiting the shorelines of the prehistoric glacial Lake Agassiz. Of note is that the beaches of Lake Agassiz are presently not adjacent to bodies of water, and consequently, are no longer really beaches at all. Named for its proximity to Herman, Minnesota, Herman Beach was formed 11,700 years ago and runs for hundreds of miles through Minnesota and North Dakota. It has been described as a smoothly-rounded beach ridge made of gravel and sand.