Miss. Code § 19-5-91
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 other stream may touch or border, on which the United States of America has authorized navigation projects, including channel clearing, channel improvement, cut-offs, levees, dams, or other navigation projects, is hereby authorized and empowered, for that part of such river or stream running through any part of said county or bordering or touching said county, as aforesaid, to give satisfactory assurances to the United States of America, or any agency thereof, including the Secretary of Defense, that it will:
Any such board of supervisors is also hereby authorized and empowered to accept the conveyance of any lands, easements and rights-of-way over and on behalf of any lands that may be benefited by the maintenance of such works, to accept assurances from landowners whose property is benefited by such navigation projects, to levy, assess and collect such taxes on said area so benefited as will be necessary, to save and hold the United States free from all damages due to the construction of the works and to exercise the right of eminent domain for the condemnation of rights-of-way and easements in like manner as is exercised by boards of supervisors for the condemnation of public road rights-of-way, and to maintain such works in said county after completion and generally to accept agreements for landowners benefited by such navigation projects to save the county harmless on account of said assurances given by the county as aforesaid to the United States of America, or any agency there of, including the Secretary of Defense.
Any such board of supervisors also is authorized to enter into any contracts or agreements with the United States, or any agency or department thereof, to sponsor a project for the environmental restoration of a lake or body of water as described in, and in accordance with the provisions of Section 19-5-92.
Miss. Code § 19-5-91