Ramba uchinyora ndima ino - Berms inoshandiswawo kudzora kukanganiswa uye kudzika nekuderedza kuyerera kwepasi. Madziro acho anoderedza kumhanya kwemvura, kana kuti anodzorera mvura kunzvimbo dzisinganyanyi kukanganiswa nekuparadzwa, nokudaro achideredza migumisiro yakaipa yemvura inoyerera paivhu repamusoro risina mvura. Kutevera 2010 "Deepwater Horizon" mafuta anodonha
muGulf of Mexico, kuvakwa kwezvikwiriso zvakagadzirirwa kudzivirira mafuta kuti asasvika munzvimbo dzisina kugadzikana dzeLouisiana (izvo zvaizoguma nekuparadzwa kukuru) zvakarongwa pakutanga, uye zvakatenderwa zviri pamutemo nehurumende yemubatanidzwa pakati paJune, 2010, mushure mekukundikana kwakawanda kumisa uye kudzora kubuda kwemafuta nemagetsi epamberi.