River Effra
（重定向自Effra）
![](/Images/godic/202501/10/Effra_vauxhall_11327.jpg")
![Boundary marker for Camberwell Parish on the route of the Effra at Gipsy Hill, where the fact of the watercourse there being a river was re-discovered in the 1920s.](/Images/godic/202501/10/CambCamberwellParishBoundaryMarker1327.jpg")
The River Effra is a converted river or former large stream in south London, England, mainly underground — due to its history and the pressing need in the late Victorian era for a surface water drainage system its contours have been used for a combined sewer similar to the Walbrook, draining for example much of the historic broadly defined areas of Peckham and Brixton.