▁winning ▁entry ▁in ▁a ▁contest ▁to ▁name ▁the ▁res er voir . ▁Water ▁behind ▁the ▁Lib by ▁dam ▁flo ods ▁back ▁ ▁into ▁Canada , ▁while ▁the ▁water ▁released ▁from ▁the ▁dam ▁returns ▁to ▁Canada ▁just ▁up stream ▁of ▁K oot en ay ▁Lake . ▁Lib by ▁Dam ▁began ▁operation ▁in ▁March ▁ 1 9 7 2 ▁and ▁is ▁operated ▁for ▁power , ▁flo od ▁control , ▁and ▁other ▁benefits ▁at - site ▁and ▁down stream ▁in ▁both ▁Canada ▁and ▁the ▁United ▁States . ▁ ▁The ▁U . S . ▁did ▁not ▁pay ▁Canada ▁for ▁the ▁land ▁sub mer ged ▁by ▁the ▁Lib by ▁Dam ▁res er voir ▁and ▁Canada ▁does ▁not ▁pay ▁the ▁U . S . ▁for ▁the ▁resulting ▁power ▁and ▁flo od ▁control ▁benefits ▁down stream ▁on ▁the ▁K oot en ay ▁River . ▁ ▁With ▁the ▁exception ▁of ▁the ▁M ica ▁Dam , ▁which ▁was ▁designed ▁and ▁constructed ▁with ▁a ▁power house , ▁the ▁Canadian ▁Tre aty ▁projects ▁were ▁initially ▁built ▁for ▁the ▁sole ▁purpose ▁of ▁reg ulating ▁water ▁flow . ▁In ▁ 2 0 0 2 , ▁however , ▁a ▁joint ▁vent ure ▁between ▁the ▁Columbia ▁Power ▁Corporation ▁and ▁the ▁Columbia ▁Bas in ▁Trust ▁constructed ▁the ▁ 1 8 5 ▁M W ▁Ar row ▁L akes ▁H ydro ▁project ▁in ▁parallel ▁with ▁the ▁Ke en le ys ide ▁Dam ▁near ▁Cast leg ar , ▁ 3 5 ▁years ▁after ▁the ▁storage ▁dam ▁was ▁originally ▁completed . ▁The ▁Dun can ▁Dam ▁remains ▁a ▁storage ▁project , ▁and ▁has ▁no