In any city of the third class which has, prior to the effective date of this act, been inundated in whole or in part as the result of the construction of any dam or reservoir by the federal government, or is in the take line of any such dam or reservoir, in which the governing body of such city has sold any property located in such city which was heretofore dedicated to the public use, whether such property was real estate, personal property or mixed real estate and personal property, such sale is hereby confirmed, legalized and declared a valid sale and conveyance.
K.S.A. 15-1146