Survey for "Watering Brook" that goes through here and connects to Fishing Creek to south per old map:

https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~26912~1100211:Hanging-Rock--Monocacy-?sort=pub_list_no_initialsort%2Cpub_date%2Cpub_list_no%2Cseries_no&qvq=q:Lynchburg;sort:pub_list_no_initialsort%2Cpub_date%2Cpub_list_no%2Cseries_no;lc:RUMSEY~8~1&mi=5&trs=9