Watsons Creek Nature Reserve lies on the Moonbi range, a southern arm of the Nandewar range. It lies within a significant region of overlap between the New England Tablelands and Western Slopes vegetation communities and species. Over 329 flora species have been recorded in the reserve.
The National Parks and Wildlife Act 1974 requires that a plan of management be prepared for each nature reserve. A plan of management is a legal document that outlines how the area will be managed in the years ahead.