Thistle Brook was a stream in the Eastfarthing of the Shire.
It was a tributary to the Shirebourn. It began in eastern Green-hill country and flowed southeast around Woody End and near Willowbottom and then into the Shirebourn.
It was approximately twenty miles in length.
- ↑ The Lord of the Rings, The Fellowship of the Ring, "A Part of the Shire" map
- ↑ The Atlas of Middle-earth pg. 71