The board of supervisors of any county through any part of which any river or other stream may run, or any part of which any river or stream may touch or border, on which the United States of America or any agency thereof has authorized flood control improvements, including channel clearing, channel improvement, cut-offs, levees, dams or other flood control improvements, when any of the lands of said county will be benefited by flood control improvements so authorized by the United States of America or any agency thereof to be constructed or made outside the border of such county, is hereby authorized and empowered to contribute to the cost of acquisition of land, easements and rights-of-way necessary for the construction of such flood control improvements outside the border of such county, provided such contribution shall be made to that county, flood control district or other agency authorized by law to acquire lands, easements or rights-of-way for such improvements, which acquires the same pursuant to request therefor from the United States of America. However, this authority to purchase lands shall allow only purchase of lands in counties lying wholly or partly within a levee district.
Said board of supervisors is hereby authorized:
Miss. Code § 51-35-21