Maryland Code, Local Government § 27-707

(b)(1) Subject to paragraph (2) of this subsection, to facilitate any cooperative construction plan agreed to by the federal government and any drainage district, the board of drainage commissioners may issue bonds of the drainage district in the form and maturities required by the federal government.

(2) A contract or agreement between the drainage district and the federal government for cooperative construction work is subject to approval by a majority of the landowners of the drainage district.