Echostorm.Sorry to confuse,Iwas answering two previous questions.
Was not suggesting the two rivers are joined,only that the spill occured in the river to the south the(Mooloolah river).Have not seen the water clean here for years.
The smell and the soap like foam in the (Maroochy river) has been noticeable for the last three years.This happens on the last of the outgoing tide,often with the water clear as. After heavy rain the river
turns brown due to the run off,but only has a earthy smell,not the other.

Thanks for the number