▁BC ▁government ▁proceeded ▁to ▁develop ▁power ▁facilities ▁on ▁both ▁the ▁Columbia ▁and ▁Peace ▁R ivers , ▁ful fill ing ▁Ben nett ' s ▁' Two ▁River ▁Policy '. ▁ ▁In ▁short , ▁BC ▁purs ued ▁the ▁Columbia ▁River ▁Tre aty ▁because ▁it ▁provided ▁a ▁unique ▁opportunity ▁for ▁hydro elect ric ▁development ▁that ▁otherwise ▁would ▁not ▁have ▁been ▁possible ▁( due ▁to ▁the ▁financial ▁situation ▁of ▁the ▁province ▁during ▁that ▁period ). ▁It ▁was ▁the ▁hope ▁that ▁these ▁develop ments ▁would ▁promote ▁industrial ▁growth ▁within ▁the ▁province ▁and ▁help ▁expand ▁the ▁economy . ▁ ▁Tre aty ▁prov isions ▁ ▁Under ▁the ▁terms ▁of ▁the ▁agreement , ▁Canada ▁was ▁required ▁to ▁provide ▁ 1 9 . 1 2   km ³ ▁( 1 5 . 5 ▁million ▁a cre - fe et ▁( M af )) ▁of ▁us able ▁res er voir ▁storage ▁behind ▁three ▁large ▁d ams . ▁This ▁was ▁to ▁be ▁accomplished ▁with ▁ 1 . 7 3   km ³ ▁( 1 . 4 ▁M af ) ▁provided ▁by ▁Dun can ▁Dam ▁( 1 9 6 7 ), ▁ 8 . 7 6   km ³ ▁( 7 . 1 ▁M af ) ▁provided ▁by ▁Ar row ▁Dam ▁( 1 9 6 8 ) ▁[ sub sequently ▁renamed ▁the ▁Hugh ▁Ke en le ys ide ▁Dam ], ▁and ▁ 8 . 6 3   km ³ ▁( 7 . 0 ▁M af ) ▁provided ▁by ▁M ica ▁Dam ▁( 1 9 7 3 ). ▁ ▁The ▁latter ▁dam , ▁however , ▁was