▁the ▁main ▁economic ▁activity ▁of ▁this ▁valley ; ▁recre ational ▁tour ism ▁activities , ▁second . ▁ ▁Forest ▁Road ▁R 0 2 1 2 ▁( E ast - West ) ▁intersect s ▁the ▁middle ▁of ▁the ▁river . ▁While ▁the ▁forest ▁road ▁R 0 2 2 3 ▁serves ▁the ▁Valley ▁of ▁the ▁Mar qu ette ▁River ▁West , ▁on ▁the ▁west ▁side ▁of ▁P out r inc ourt ▁Lake . ▁This ▁last ▁road ▁connect s ▁to ▁the ▁N ortheast ▁at ▁route ▁ 1 6 7 ▁linking ▁Ch ib oug am au ▁and ▁Saint - F é lic ien , ▁Quebec . ▁The ▁Canadian ▁National ▁Railway ▁runs ▁along ▁this ▁road . ▁ ▁The ▁surface ▁of ▁the ▁Mil ieu ▁River ▁is ▁usually ▁fro zen ▁from ▁early ▁November ▁to ▁mid - May , ▁however , ▁safe ▁ice ▁circul ation ▁is ▁generally ▁from ▁mid - Nov ember ▁to ▁mid - A pril . ▁ ▁Geography ▁ ▁Top onym y ▁ ▁The ▁to pon ym ▁" R iv ière ▁du ▁milieu " ▁was ▁formal ized ▁on ▁March ▁ 2 8 , ▁ 1 9 7 2 ▁at ▁the ▁Commission ▁de ▁to pon ym ie ▁du ▁Québec . ▁ ▁Notes ▁and ▁references ▁ ▁See ▁also ▁▁ ▁Category : R ivers ▁of ▁S ag uen ay – L ac - Saint - Jean ▁Mil ieu ▁River ▁Category : Le ▁D oma ine - du - Ro y ▁Regional ▁County ▁Municip ality <0x0A> </s> ▁André ▁Tr ill ard ▁( born ▁ 2 4 ▁October ▁ 1 9 4 7 ) ▁is