Where is the Lleucu River in Cardiff?
I think it is the river/stream that forms Roath Park lake, the
stream then continues through Roath park but I then lose it on
Google Earth, it must come out on the shoreline somewhere so this
stream/river must be covered over after Roath park. I'm not sure
that the stream above is the Lleucu but you can follow the stream
from the lake on OS maps. Below Roath Park it bends the east and
eventually flows into the River Rhymney just north of Newport