1) Build a levee 2) Build a levee on 3) Confine 4) Confine, like a dam 5) Create a dike 6) Enclose 7) Enclose a waterway 8) Erect levees 9) Hold in 10) Protect from floods 11) Protect with a dike 12) Put up a sea wall 13) Surround with dikes 
• (v. t.) To throw up a bank so as to confine or to defend; to protect by a bank of earth or stone.
Em·bank' transitive verb [ imperfect & past participle Embanked ; present participle & verbal noun Embanking .] [ Prefix em- + bank . Confer Imbank .] To throw up a bank so as to confine or to defend; to protect by ...
verb enclose with banks, as for support or protection; `The river was embanked with a dyke`
to enclose or protect with an embankment.