River Taff
From Tardis Wiki, the free Doctor Who reference
The River Taff was a river that ran through the centre of Cardiff city and entered Cardiff Bay. During a scuffle, many Cardiff civilians fell into the river while fighting for the Amok. (PROSE: Border Princes)
Gwen Cooper and Rhys Williams crossed the River Taff and travelled along Penarth Road while attempting to reach Cardiff's Central Police Headquarters from Harrowby Street. (PROSE: Bay of the Dead)