Lynde Creek is a stream in the municipalities of Whitby and Scugog, Regional Municipality of Durham, in the Greater Toronto Area of Ontario, Canada.[1] It is in the Great Lakes Basin, is a tributary of Lake Ontario, and is under the auspices of the Central Lake Ontario Conservation Authority.[2] The creek begins on the Oak Ridges Moraine in geographic Reach Township[3] in the municipality of Scugog, and flows south to its mouth in the southwest of the town of Whitby. Portions of the 132.19-square-kilometre (51.04 sq mi) watershed[4] also extend into the town of Ajax, the city of Pickering and the municipality of Uxbridge.[2]