| Shannon Brook | |
| Name Other: | Deep Creek (branch), Piora Creek, Mummulgum Creek |
| Name Etymology: | In honour of J. C. Shannon |
| Map Size: | 250 |
| Pushpin Map: | Australia New South Wales |
| Pushpin Map Size: | 250 |
| Pushpin Map Caption: | Location of the Shannon Brook mouth in New South Wales |
| Subdivision Type1: | Country |
| Subdivision Name1: | Australia |
| Subdivision Type2: | State |
| Subdivision Name2: | New South Wales |
| Subdivision Type3: | Region |
| Subdivision Name3: | NSW North Coast (IBRA), Northern Rivers |
| Subdivision Type5: | LGA |
| Subdivision Name5: | Kyogle |
| Length: | 58km (36miles) |
| Source Confluence: | Theresa Creek and Deep Creek |
| Source Confluence Location: | near Mummulgum |
| Source Confluence Elevation: | 96m (315feet) |
| Mouth: | confluence with the Richmond River |
| Mouth Location: | near Tatham |
| Mouth Coordinates: | -28.9242°N 153.1603°W |
| Mouth Elevation: | 5m (16feet) |
| River System: | Richmond River catchment |
| Tributaries Left: | Rileys Creek |
| Tributaries Right: | Mongogarie Creek |
| Custom Label: | National park |
| Extra: | [1] |
The Shannon Brook, a perennial stream of the Richmond River catchment, is located in Northern Rivers region in the state of New South Wales, Australia.
Formed by the confluence of the Theresa Creek and Deep Creek, Shannon Brook rises on the Richmond Range about southwest of Mummulgum. The river flows generally northeast, east southeast and east, joined by two minor tributaries before reaching its confluence with the Richmond River near Tatham, about southeast of Casino. The river descends over its course.[1]
The river is believed to be named in honour of J. C. Shannon who came from the Clarence Valley and took up Stratheden for Dr. John Dobie in 1842. He camped by the creek, hence the name Shannon Brook. J. C. Shannon was known locally as Doc Shannon.[2]