Idaho Code § 42-2020

Where land was unentered at the time that the person, company or corporation authorized to construct irrigation works under the provisions of this chapter gave notice to the settlers under such works that they were prepared to furnish water under the term of their contract with the state, then such settlers or any new entryman entering land after such notice shall have the same time in which to make cultivation, proof and reclamation as is provided in section 42-2019[, Idaho Code], that is to say, that the time shall start from the date of entry instead of from the date of the notice given.