ric ity ). ▁The ▁Canadian ▁Ent it lement ▁var ies ▁from ▁year ▁to ▁year , ▁but ▁is ▁generally ▁in ▁the ▁range ▁of ▁ 4 , 4 0 0 ▁G Wh ▁per ▁year ▁and ▁about ▁ 1 , 2 5 0 ▁M W ▁of ▁capacity . ▁ ▁The ▁Tre aty ▁required ▁the ▁U . S . ▁to ▁pay ▁a ▁total ▁of ▁$ 6 4 . 4   mill ion ▁ ▁for ▁the ▁flo od ▁control ▁benefits ▁due ▁to ▁the ▁operation ▁of ▁ 8 . 4 5 ▁M af ▁of ▁Canadian ▁storage . ▁ ▁The ▁payment ▁was ▁based ▁on ▁an ▁allocation ▁that : ▁ ▁gives ▁Canada ▁equal ▁credit ▁to ▁U . S . ▁projects ▁existing ▁in ▁ 1 9 6 1 ▁( bet ter ▁than ▁first ▁added ), ▁▁ ▁ign ores ▁the ▁flo od ▁control ▁benefits ▁provided ▁by ▁Lib by ▁and ▁other ▁post - 1 9 6 1 ▁U . S . ▁projects , ▁and ▁▁ ▁also ▁ign ores ▁the ▁flo od ▁control ▁benefits ▁provided ▁by ▁the ▁Canadian ▁power ▁storage ▁operation ▁that ▁normally ▁draft s ▁far ▁more ▁than ▁the ▁ 8 . 4 5 ▁M af ▁flo od ▁control ▁oblig ation . ▁ ▁The ▁estimated ▁annual ▁benefit ▁was ▁capital ized ▁for ▁an ▁up - front ▁payment ▁based ▁on ▁a ▁low ▁U . S . ▁interest ▁rate ▁of ▁ 3 <0xE2> <0x85> <0x9E> ▁percent ▁for ▁the ▁flo od ▁dam ages ▁prevent ed ▁until ▁September ▁ 2 0 2 4 . ▁The ▁U . S . ▁ins isted ▁on ▁determ ining ▁the ▁payment ▁based ▁on ▁benefits ▁until