Neb. Rev. Stat. § 46-229: Neb. Rev. Stat. § 46-229

All appropriations for water must be for a beneficial or useful purpose and, except as provided in sections 46-290 to 46-294 and 46-2,122 to 46-2,125 , when the owner of an appropriation or his or her successor in interest ceases to use it for such purpose for more than five consecutive years, the right may be terminated only by the Chief Water Officer pursuant to sections 46-229.02 to 46-229.05 .