Long Gully located in NSW is designated as a Gully. . Long Gully used to be known as Long Arm. The LGA in Long Gully is Muswellbrook. A non perennial stream rising about 2.5 km north north east of Baerami Creek (locality). It flows generally north west for about 4 km into Baerami Creek about 4.5 km north north west of the locality at Baerami Creek.