South Fork Boise River

The South Fork Boise River winds through southwestern Idaho’s rugged Boise Mountains, carving a path from alpine headwaters in the Smoky and Soldier ranges into deep basalt canyons lined with sagebrush hills and lush riparian corridors of cottonwoods and willows. Between Anderson Ranch Dam and Arrowrock Reservoir the river flows past towering cliffs, seasonal waterfalls and open valley bottoms, creating a remote yet accessible desert canyon landscape. Anglers prize its cold, clear tailwater for outstanding wild rainbow trout fishing from shore or drift boat, while paddlers enjoy gentle floats upstream and challenging whitewater runs through the roadless canyon. Dispersed campsites, scenic drives and hiking trails invite visitors to explore the quiet shores, watch wildlife and immerse themselves in this classic southwestern Idaho river setting.