▁degree ▁of ▁control ▁over ▁the ▁river ' s ▁hydro graph . ▁Pe ak ▁flows ▁could ▁now ▁be ▁more ▁dram atically ▁reduced , ▁and ▁low ▁flows ▁bol ster ed ▁by ▁controlled ▁releases ▁from ▁storage . ▁Pe ak ▁power ▁dem ands ▁tend ▁to ▁occur ▁in ▁mid w inter ▁and ▁mid sum mer , ▁so ▁river ▁man agers ▁cal ibr ate ▁releases ▁to ▁co inci de ▁with ▁periods ▁of ▁high ▁demand . ▁This ▁is ▁a ▁dram atic ▁change ▁from ▁the ▁snow m elt - dri ven ▁summer ▁peak ▁flows ▁of ▁the ▁river ▁prior ▁to ▁its ▁development . ▁ ▁See ▁also ▁H ydro elect ric ▁d ams ▁on ▁the ▁Columbia ▁River ▁B . C . ▁H ydro ▁and ▁Power ▁Author ity , ▁Prov inci ally ▁owned ▁power ▁utility ▁and ▁owner / operator ▁of ▁M ica , ▁Ar row , ▁& ▁Dun can ▁d ams ▁Columbia ▁Bas in ▁Trust , ▁province ▁of ▁British ▁Columbia ▁effort ▁to ▁mit ig ate ▁impact s ▁of ▁the ▁treat y ▁Columbia ▁Power ▁Corporation , ▁a ▁province ▁owned ▁crown ▁corpor ation ▁and ▁sister ▁ag ency ▁with ▁C B T . ▁B onne ville ▁Power ▁Administration , ▁U . S . ▁federal ▁ag ency ▁man aging ▁sale ▁and ▁transmission ▁of ▁federal ▁power ▁in ▁the ▁Pacific ▁North west . ▁United ▁States ▁Army ▁Corps ▁of ▁Engine ers , ▁U . S . ▁federal ▁ag ency ▁man aging ▁Lib by ▁dam ▁and ▁many ▁other ▁public ▁works ▁projects . ▁International ▁J oint ▁Commission , ▁bin ational ▁commission ▁to ▁prevent ▁and ▁resolve ▁U . S . ▁and ▁Canada ▁disput es