Versions of Iowa Code 6A.13 - Change in streams on LawServer 2024 Iowa Code 6A.13 – Change in streams 2023 Iowa Code 6A.13 – Change in streams 2022 Iowa Code 6A.13 – Change in streams 2020 Iowa Code 6A.13 – Change in streams 2018 Iowa Code 6A.13 – Change in streams 2016 Iowa Code 6A.13 – Change in streams 2014 Iowa Code 6A.13 – Change in streams. 2009 Iowa Code 6A.13 – Change in streams