Triangle Lake is closer by road miles and by drive time to Eugene (pop. 160,000) than to Corvallis (pop. 60,000.) Eugene is the county seat in Lane County, where Triangle Lake is located. Says Ann Tattersall
The Hubert McBee Memorial Park to Rock Quarry Weir segment has a length of 6 miles; you encounter this segment of whitewater on Alsea River - South Fork. It's a category II-III segment. The Hubert McBee Memorial Park to Rock Quarry Weir segment of
Alsea River - South Fork is advised for kayak paddlers of medium skill. You ought to check circumstances before heading out; kayak paddling could turn risky.