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The Iowa Geological Survey was part of The Iowa Department of Natural Resources (located on The University of Iowa campus) until 2014 . It then became part of IIHR—Hydroscience & Engineering at the University of Iowa.

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Browse the Iowa Geological Survey Collections:

IGS Geode

Iowa Geological Survey Annual Report

Iowa Geological Survey Guidebook Series

Iowa Geological Survey Publications

Iowa Geology

Open File Maps

Report of Investigations

Technical Information Series

Water Atlas

Water Resources Investigation Report

Water-Supply Bulletin