The Missouri River and the farmlands of northwestern Iowa and northeastern Nebraska are visible in this north-northeast-looking, low-oblique photograph. Apparent is the Missouri River from the extreme east end of the Lewis and Clark Reservoir on the South Dakota-Nebraska border; its confluence just north of Sioux City with the Big Sioux, which separates Iowa and South Dakota; and its continued path south of Sioux City. Dark tree-covered bluffs rising to 200 feet (61 meters) above the Missouri River Valley floor appear on the east side of the Missouri River.