Overview Panther Flat Campground sits in the vast Six Rivers National Forest in northern California. This shady, secluded campground is just steps from the Smith River, which is famous for its bright blue waters and scenic pathway through the forest.Recreation Popular activities include swimming, sunbathing, rafting and fishing in the Smith River. Anglers enjoy healthy fishing populations of salmon, steelhead and cutthroat trout. Visitors also enjoy hiking, horseback riding and biking in the ar