Hoover Dam wani katafaren dam ne na bakin karfe da ke kan kogin Colorado, a kan iyaka tsakanin jihohin Arizona da Nevada na Amurka. An gina dam tsakanin 1931 zuwa 1936 a lokacin Babban Mawuyacin hali kuma an sanya masa suna bayan Shugaba Herbert Hoover. Manufar kafa madatsar ruwa ta Hoover ita ce sarrafa magudanar ruwan kogin Colorado, samar da ruwa da wutar lantarki a yankin, da kuma hana ambaliya. Ana ɗaukar madatsar ruwa a matsayin abin al'ajabi na injiniya kuma mai ba da gudummawa ga ci gaban tattalin arziki da zamantakewa na yammacin Amurka.