My 1st inclination was to call it Tygart after the tributary of the Monongahela in West Virginia, but I didn't like the backstory of the name. Tygart is named after a poor settler David Tygart, who fled the area after being attacked by the locals. I actually have not spent much time in that area anyway, I mostly worked with a bunch of folks from Grafton. On the other hand I have visited the Youghiogheny numerous times and I always got a kick out of Rocky and Bullwinkle making reference to it in that episode in McKeesport where their rivals were the 'Mud City Manglers.' There is a local band here called that and they rock and I know them pretty well. If they ever got their act together I think that they'd do well in Australia. Seriously!
Uh, so anyway, the Youghiogheny(pronunciation), loosely translated means "water which flows in a contradictory direction, or water that turns upon itself," which suits this pattern.