Section 569 of this title is extended to the following described land.
All in lot 2, section 22, township 7 north, range 1 west, Boise meridian, beginning at the northwest corner of said lot 2, thence east along the northern boundary of said lot 2 nine hundred and ninety feet; thence south along a line parallel to the eastern boundary of said lot 2 to the intersection with the northerly meander line of the Payette River; thence westerly along the northerly meander line of the Payette River to the intersection with the western boundary of said lot 2; thence north along the western boundary of said lot 2 to the northwest corner of said lot 2, which is the point of beginning, comprising approximately twenty-five acres.
43 U.S.C. § 569a