When it appears necessary to protect a highway damaged by or expected to be damaged by flood waters or ice jams, the selectmen may change the course of or widen a stream, or provide storage for accumulated ice, and for these purposes may purchase or take the necessary land. They shall follow the procedures established in section 923 of this title in giving notice, inspecting property, determining need, awarding damages, and satisfying appeals. (Added 1985, No. 269 (Adj. Sess.), § 1.)