Has its headwaters on the eastern side of the township of Portland. It flows in a generally northerly direction for over 16km to join Williwa Creek at GR 771172, which in turns flows into Jews Creek and the Turon River. The first land grant of Cullen Bullen, (2000ac), was taken up by Robert Venour Dulhunty. His brother, Lawrence Vance Dulhunty, also took a large grant of land nearby. For more information on the Dulhuntys, see Cullen Bullen entry.