Eagle Lake lies in a natural basin largely bounded by volcanic rocks. It is fed mainly by Pine Creek, which flows from the higher country near Lassen Peak to the west. The lake’s alkaline water (pH 8+) is home to the Eagle Lake trout, a subspecies of rainbow trout found nowhere else, that is a prized sport fish. The trout once spawned in Pine Creek, but the population is now maintained by a hatchery, as Pine Creek now is dry for much of the year due to the effects of…
