Toms Dam BranchToms Dam Branch is a long 2nd tributary to Gum Branch in Sussex County, Delaware. This is the only stream of this name in the United States.Variant namesAccording to the Geographic Names Information System, it has also been known historically as:Saint Johnstown DitchCourseToms Dam Branch rises about 0.5 miles south of Staytonville, Delaware and then flows south to join Gum Branch about 2 miles east-northeast of Bridgeville.WatershedToms Dam Branch drains of area, receives about 45.7 in/year of precipitation, has a topographic wetness index of 742.48 and is about 10% forested.