Pedzisa mutsara unotevera: Berms inoshandiswawo kudzora kukanganiswa uye sedimentation nokuderedza mwero pamusoro runoff. Madziro acho anoderedza kumhanya kwemvura, kana kuti anodzorera mvura kunzvimbo dzisinganyanyi kukanganiswa nekuparadzwa, nokudaro achideredza migumisiro yakaipa yemvura inoyerera paivhu repamusoro risina mvura. Zvichitevera 2010
"Deepwater Horizon" mafuta anodonha muGulf yeMexico, kuvakwa kwemabhesi akagadzirirwa kudzivirira mafuta kuti asvike munzvimbo dzisina kusimba dzeLouisiana (izvo zvaizoguma nekukanganisa kukuru) zvakarongwa pakutanga, uye zvakatenderwa zviri pamutemo nehurumende yemubatanidzwa pakati paJune, 2010, mushure mekukundikana kwakawanda kumisa uye kudzora kudonha kwemafuta nematekinoroji epamberi.