Rubuta ci gaba don wannan sakin layi - Kazalika da samar da wutar lantarki, ana nufin dam din ya kara karfin jigilar kayayyaki na Kogin Yangtze. Ta hanyar samar da sararin ajiyar ambaliyar ruwa, madatsar ruwa tana rage yuwuwar ambaliyar ruwa a kwarin da ke fama da Yankin Yangtze. A 1931, ambaliyar ruwa
a kan kogin ya haifar da mutuwar mutane miliyan 4. A sakamakon haka, China ta dauki wannan aikin a matsayin babbar nasara ta zamantakewa da tattalin arziki, tare da tsara manyan turbines na zamani, da kuma matsawa zuwa iyakance hayakin iskar gas. Duk da haka, dam ya haifar da canje-canje na muhalli ciki har da haɗarin haɗarin ƙasa. Saboda wannan, dam din ya kasance mai rikitarwa a cikin gida da kuma kasashen waje.