Three cross sections were constructed in 2012 (based off older CSD drafts by Vince Dreeszen) across portions of eastern Nebraska to characterize the regional geology of unconsolidated Quaternary deposits and the bedrock units that lie directly beneath them. The locations of these cross sections are shown in Figure 1 : of the publication. Lithologic data were obtained primarily from historical test hole logs drilled by the Conservation and Survey Division (CSD) with select oil and gas exploration logs from the Nebraska Oil and Gas Commission (http://nogcc.ne.gov/). These test holes were drilled specifically to investigate subsurface geology and therefore represent the highest quality data available. An archive of additional CSD drafted cross section locations in eastern Nebraska (includes unpublished) is available in the "Xsectionscans" folder of the ENWRA Archive online.