
Lake Francis Case dominates this Missouri River valley landscape, reflecting the mid-20th-century transformation of the river following the construction of major dams. The map documents the submerged topography and new shoreline of the reservoir, bordering the townships of Grandview, Iona, and America. While much of the valley was inundated, the high ground remains defined by landmarks such as Twin Butte and the winding drainages of Smith Creek and Elm Creek.
20 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1940 · Iona
USGS Topo · 1:62,500
1944 · Iona
USGS Topo · 1:62,500
1952 · Iona NW
USGS Topo · 1:24,000
1955 · Mitchell
USGS Topo · 1:250,000
1959 · Mitchell
USGS Topo · 1:250,000
1971 · Lucas NW
USGS Topo · 1:24,000
1971 · Dixon
USGS Topo · 1:24,000
1971 · Dixon NE
USGS Topo · 1:24,000
1974 · Red Lake West
USGS Topo · 1:24,000
1974 · Iona
USGS Topo · 1:24,000