ail u ku ▁River ▁( which ▁includes ▁Bo iling ▁P ots ) ▁accounts ▁for ▁ 2 5 % ▁of ▁the ▁river ▁d row ning ▁death s ▁in ▁the ▁state . ▁ ▁The ▁lower ▁reach ▁of ▁the ▁river ▁is ▁used ▁for ▁the ▁generation ▁of ▁hydro elect ric ity . ▁The ▁flow ▁at ▁H ilo ▁aver ages ▁ 2 7 5   c ub ic ▁feet ▁per ▁second ▁( 8   m ³ / s ) ▁with ▁peak ▁flows ▁ 4 0   times ▁as ▁great . ▁Water ▁flow ▁is ▁monitor ed ▁by ▁the ▁US GS . ▁The ▁stream ▁car ries ▁an ▁average ▁of ▁ 1 0   tons ▁of ▁susp ended ▁sed iment ▁into ▁H ilo ▁Bay ▁each ▁day , ▁at ▁. ▁ ▁The ▁river ▁has ▁been ▁the ▁site ▁of ▁se w age ▁le aks ▁and ▁is ▁the ▁subject ▁of ▁water ▁quality ▁research . ▁ ▁Water ▁advis ories ▁are ▁posted ▁online ▁by ▁the ▁State ▁of ▁Hawai i . ▁There ▁is ▁a ▁plan ▁for ▁rest oration ▁of ▁the ▁H ilo ▁Bay ▁waters hed ▁that ▁includes ▁character ization ▁of ▁the ▁W ail u ku ▁River . ▁ ▁In ▁the ▁Hawai ian ▁language , ▁w ai ▁means ▁fresh ▁water ▁and ▁lu ku ▁means ▁destruction , ▁so ▁it ▁means ▁essentially ▁River ▁of ▁Dest ruction . ▁The ▁river ▁can ▁rise ▁into ▁the ▁trees ▁and ▁drop ▁back ▁down ▁very ▁fast . ▁The ▁high ▁flo od ▁marks ▁can ▁be ▁seen ▁dated ▁in ▁concrete , ▁on ▁the ▁st airs ▁going ▁down ▁to ▁the ▁river ▁behind ▁the ▁H ilo ▁Public ▁Library . ▁