Iona anchors this section of Lyman County, situated along a section of the road network where 266th St and 338th Ave meet. The landscape is defined by the high ground of the Iona Hills and the prominent Twilight Butte to the southwest, contrasted by the broad drainage patterns of Waterhole Cr and Nicholas Cr. This mid-2010s survey illustrates a rural South Dakota prairie environment where agriculture and topography dictate the placement of local infrastructure, such as Lake Agnes and the Iona Cem.
25 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 · Hamill NE
USGS Topo · 1:24,000
1952 · Iona NW
USGS Topo · 1:24,000
1955 · Mitchell
USGS Topo · 1:250,000
1959 · Mitchell
USGS Topo · 1:250,000
1971 · Hamill SE
USGS Topo · 1:24,000
1971 · Rattlesnake Butte East
USGS Topo · 1:24,000
1971 · Dixon
USGS Topo · 1:24,000
1971 · Dixon NE
USGS Topo · 1:24,000