The state geologist and the state geologist's assistants shall make detailed maps and reports of counties and districts as fast as the work is completed, which reports shall embrace such geological, mineralogical, topographical, and scientific details as are necessary to make complete records thereof, which may include the necessary illustrations, maps, charts, and diagrams.
Iowa Code § 456.6
2002 Acts, 2nd Ex, ch 1003, §260, 262