Yes, the Bremer River! So the question is where is the watercourse "Langhorne Creek"???
From what I can find out the town name came from a guy called Alfred Langhorne. In the 1840s Langhorne owned a cattle station in this area. There was a bridge over the Bremer River nearby used for driving cattle between Strathalbyn and Wellington. This bridge became known has Langhorne's Bridge. Over time this name morphed into Langhorne Creek and the town that formed nearby was named.
So from what I can find out, there is no creek called Langhorne Creek!
Now on to the puzzle! The integer part of the minutes is S35° 19.??? E139° 02.??? The following South Australian watercourses will give you the rest.
