Consent is hereby given to the acquisition of lands by the United States for the purposes within the scope of Section 13 of the act of Congress approved December 22, 1944 (Public, Numbered 534, Seventy-eighth Congress, Second Session), in connection with the programs adopted and authorized in Sections 12688 and 12690. There shall be paid annually by the United States to the county in which any land acquired may lie, a sum equal to 1 percent of the purchase price paid for the lands, or, if not acquired by purchase, 1 percent of their valuation at the time of their acquisition.