Couldnt seem to hook one but i saw several that looked to be maybe 16+ inches... seemed pretty big to me but i dont really know???
that's very good sized for any resident river trout on this side of the state. i fish in the deschutes every now and then and most are 6-8" long with a big one going 10 or 12. of course the sea runs that come in during october and november are a different story...
16" is a pretty good Cutt, though in a stream that size, it's possible to find them to over 20".