1989 Map of Illahee Rock

About this map

The Umpqua River snakes through a landscape defined by dramatic geological formations and early hydroelectric development. The Soda Springs Power Plant sits along the river's northern bank, marking a point of industrial utility amidst the protected reaches of the Umpqua National Forest. To the north, the Boulder Creek Wilderness preserves a series of drainage basins, including Onion Creek and Rattlesnake Creek, which descend from high points like Harding Butte and Illahee Rock. Cultural significance is evident at the Dog Creek Indian Caves and the small settlement at Illahee, situated near the river's bend. Low-lying areas like Illahee Flats and Oak Flats provide rare level ground between the ridges, while crossings like the Marsters Bridge and various gaging stations reflect the ongoing management of this river corridor.