Idaho Code § 58-902: Claim — What to contain.

Every claim, to enable the holder to maintain any action as aforesaid, must contain not more than 160 acres of land, to be in compact form, and so distinctly marked that the boundaries thereof may be easily traced: provided, that when the United States government has set aside any tract of land subject to homestead entry of not more than 320 acres in such homestead, each claim under the provisions of this chapter may contain 320 acres.