WHITE RIVER. The White River rises at the confluence of Callahan and Runningwater draws, just southwest of the intersection of Farm roads 378 and 784 eight miles west of Floydada in southwest Floyd County (at 33°59' N, 101°29' W). It runs southeast for sixty-two miles, through Blanco Canyon and the White River Reservoir in Crosby County, to its mouth on the South Fork of the Brazos River, twenty miles west of Jayton in northwestern Kent County (at 33°14' N, 100°56' W). Its main tributaries include Pete, Crawfish, and Davidson creeks. Upstream, the river traverses flat to rolling terrain with local escarpments, surfaced by deep, fine sandy loam in which grow hardwood trees, conifers, brush, and grasses. Downstream, the land is flat, flood-prone, and marked with shallow depressions. Sandy and clay loams support water-tolerant hardwoods, conifers, and grasses. The river was known to the traders and hunters of eastern New Mexico long before settlers arrived. The Spanish name, Blanco, was anglicized to give the stream its present name.