Versions of Oregon Statutes 273.581 - Natural areas register; contents; agreements between department and landowners on LawServer 2023 Oregon Statutes 273.581 – Natural areas register; contents; agreements between department and landowners 2021 Oregon Statutes 273.581 – Natural areas register; contents; agreements between department and landowners 2019 Oregon Statutes 273.581 – Natural areas register; contents; agreements between department and landowners 2017 Oregon Statutes 273.581 – Natural areas register; contents; agreements between department and landowners 2015 Oregon Statutes 273.581 – Natural areas register; contents; agreements between department and landowners 2013 Oregon Statutes 273.581 – Natural areas register; contents; agreements between department and landowners 2009 Oregon Statutes 273.581 – Natural heritage areas register; contents; agreements between board and landowners