<prompt> Fingqa isihloko: Isomiso esentshonalanga ye - United States siye sishiya amanzi aseMfuleni iColorado engaphansi kakhulu kwezinga lawo elijwayelekile. ILake Powell, idamu elisemngceleni we-Arizona ne-Utah, lingaphansi ngamaphesenti angu-45 kwamandla alo, futhi ukuntuleka kwamanzi kuye kwashiya indandatho yokugeza ezansi kwamadwala alo amakhulu. Leli chibi, iColorado egcina igeleze kulo iGrand Canyon National Park, selilahlekelwe amalitha amanzi ayizigidi eziyizinkulungwane ezingu - 4,4 ngenxa yesomiso esenzeke muva nje. Isigodi somfula besilokhu sinomkhuhlane wesomiso iminyaka eyishumi nanye kule minyaka engu-14 edlule, sinciphisa indawo yokugcina amanzi eyayiyingxenye eyodwa kwezine yobukhulu beRhode Island lapho isitsha sasigcwele, ngokusho kweNational Geographic. Skrolela phansi ukuze ubone ividiyo. ILake Powell, okuyichibi lesibili ngobukhulu ezweni lapho lichibi ngokugcwele, manje linendandatho emhlophe yokugeza emihosheni yalo ngenxa yokwehla kwamazinga amanzi. IColorado inikeza amanzi eNevada, e-Arizona naseCalifornia, eyokugcina eye yabona izindawo ezinkulu ezisezingeni elibi kakhulu futhi elihlukile lesomiso futhi izama ukuvimbela ukuthi izakhamuzi zisebenzisa amanzi amangaki. Izifundazwe eziyisikhombisa nabantu abayizigidi ezingu-40 bathola amanzi ezingxenyeni ezihlukahlukene zedamu lomfula, elifinyelela ezingxenyeni eziseningizimu yeWyoming. Ososayensi abaningi besimo sezulu bacabanga ukuthi iNingizimu-ntshonalanga nayo izobhekana nesomiso esikhulu kuleli khulu leminyaka esiyohlala isikhathi eside kunesomiso samanje. ILake Mead, ichibi eliseduze neHoover Dam, lancipha laba ngamaphesenti angu-39 omthamo walo ngonyaka odlule futhi lalisesilinganisweni esiphansi kakhulu selokhu kwakhiwa idamu ngawo-1930. Ukuze isize enye indawo yokulondoloza ukuba igcine ukunikezwa kwayo kungaguquguquki, iLake Powell izokhipha ama-acre-feet ayizigidi ezingu-8,23 amalitha ayizigidi eziyizinkulungwane ezingu-2,68 ezansi nomfula phakathi nonyaka. Kulinganiselwa ukuthi ukuchitheka kwamanzi kuzokwehlisa izinga lamanzi ePowell, idamu lesibili ngobukhulu ezweni ngemva kweMead, ngemitha elilodwa. Usengozini yokubona ukuphakama kwaso kungaphansi kwamamitha angu-1.075 ngaphezu kolwandle ngo-September, okungaba izinga eliphansi kunawo wonke ake aqoshwa, elibhalwe ngo-2005, futhi kwandise usayizi wendandatho yaso emhlophe ecwebezelayo. Amaminerali asemanzini aguqula izindonga...  <response>: Eminyakeni engu - 14 edlule engu - 11 kuye kwaba nesomiso echibini laseLake Powell. Idamu elisemngceleni we-Arizona-Utah lingamaphesenti angu-45 ngaphansi kwamandlaechibini eligcwele . Leli chibi lizowa nakakhulu njengoba linikeza amanzi eLake Mead eDamu iHoover. 