The Chad Brook is a stream, or brook, wholly within Birmingham, England. It rises in the district of Harborne (formerly in Worcestershire), giving its name to the area known as Chad Valley (and thus indirectly to Chad Valley toys), and runs through the suburb of Edgbaston.Its course follows a roughly south-easterly direction, passing through the grounds of Lordswood Boys' School and then Harborne Nature Reserve and the Grade II listed Westbourne Road Town Gardens,, underneath the former Harborne Railway (now a walkway), crosses the campus of the University of Birmingham and the grounds of Edgbaston Hall where it feeds Edgbaston Pool, and is in a culvert under the site of the BBC's former Pebble Mill Studios, leading to its confluence with the Bourne Brook.