ORS § 223.884
In carrying out the powers granted by ORS 223.882, cities are granted the right of eminent domain and the right to take private property for the public uses authorized by ORS 223.882. This power shall be exercised as provided by ORS chapter 35. Real property located without the corporate limits of the city, adjacent or contiguous to any of the boundary lines of the corporate limits of the city or within 10 miles of the boundary line of the corporate limits of any such city, may be acquired under the terms of this section. The determination of the council, commission of public docks, or other administrative body of the city having jurisdiction of its wharf or dock property that the acquiring of any particular real property is necessary to carry out the purposes of ORS 223.882 shall be sufficient foundation for the exercise of the right of eminent domain, notwithstanding that there is other real property available that might be used for those purposes.
ORS 223.884