his watershed is vast, draining thousands of miles, from icy streams funneling down the slopes of Mt. Lassen to form the North Fork of the Feather, to the spring-fed creeks collecting in the Sierra Valley to make the Middle Fork---all the way to the Low Flow section with its steelhead and salmon below the Oroville Dam.  This is a great area to fly fish.  There are areas here that probably see less than a score of anglers a year.