The stream rises from several sources in Chislehurst in the London Borough of Bromley and the BR7 post code area.

It then flows north through Foxbury and Kemnal, with small ponds and woodlands such as Ash Grove on its course, following some of Kemnal Road and passing through the sports grounds of Flamingo Park and the Jack Nicklaus Golf Centre.

It continues northeast under the Sidcup By-Pass (A20) and the adjacent Foots Cray Road (A211) into the London Borough of Bexley and DA15 post code area.

[3] The stream then passes through some small green areas including allotments, the small Beverley Wood, and finally flows into Blackfen where it joins the longer River Shuttle in Hollyoak Wood Park.

Some of the stream's course lies between the backs of domestic gardens, while in other places some roads have been built with a separate lane either side of the river with narrow grassy banks.