Miss. Code § 51-35-1
The commissioners of any drainage district heretofore or hereafter organized under the laws of the State of Mississippi, acting on behalf of the district or in cooperation with other drainage districts, are hereby authorized and empowered to give satisfactory assurances to the United States of America or any agency thereof that any and all flood control works, constructed either within or without the district by the United States of America or any agency thereof, shall be maintained without expense to the United States. The commissioners of any drainage district are hereby authorized and empowered on behalf of the district to enter into agreements with the commissioners of other drainage districts for carrying out the purposes of Sections 51-35-1 through 51-35-7.
Miss. Code § 51-35-1