The map, top left, shows the dramatic shift of the river confluence since 1803-04. The Wood River confluence has changed by similar proportions. The Corps's location at Wood River remains an educated guess. Center: The Lewis & Clark Confluence Tower stands off HWY 3 in Hartford IL, north of the visitor center and fort replica. At 150 ft high it will offer a great view of the Mississippi/ Missouri. Unfortunately the project ran out of funds and was not open. The granite tablet, above, explains the departure of the Corps. Left, a tug pushes up the Mississippi.