Where did the name Broad Gully Creek come from? I know broad gully wetland is correct as it appears on Vicplan and the Melbourne Water information display but im not so sure about the creek itself. The Nillumbik Flood emergency plan refers to it as "Broad Gully Road Drain" 
I don't mean to nitpick as your edits are so incredibly detailed (Were inspiration for some of my own micromapping) and really add to the map in the Northeast. 
Thanks,
Tom