▁ 1 7 0 , ▁Chem in ▁Saint - R och , ▁l ' autor oute ▁ 7 0 , ▁chemin ▁du ▁Pl ate au ▁Nord , ▁bou lev ard ▁Saint - Jean - B apt iste , ▁" chem in ▁du ▁rang ▁Saint - Jose ph " ▁and ▁" chem in ▁du ▁rang ▁Saint - Martin ", ▁for ▁agricult ure , ▁forest ry , ▁recre ational ▁and ▁tour ist ▁activities ▁and ▁residents ▁of ▁this ▁area . ▁ ▁Forest ry ▁is ▁the ▁main ▁economic ▁activity ▁in ▁this ▁valley ; ▁recre ational ▁tour ism , ▁second . ▁ ▁The ▁surface ▁of ▁the ▁G auth ier ▁River ▁is ▁usually ▁fro zen ▁from ▁the ▁beginning ▁of ▁December ▁to ▁the ▁end ▁of ▁March , ▁however ▁the ▁safe ▁circul ation ▁on ▁the ▁ice ▁is ▁generally ▁made ▁from ▁mid - Dec ember ▁to ▁mid - M arch . ▁ ▁Geography ▁ ▁The ▁main ▁waters h eds ▁adjacent ▁to ▁the ▁G auth ier ▁river ▁are : ▁ ▁north ▁side : ▁S ag uen ay ▁River ; ▁ ▁east ▁side : ▁S ag uen ay ▁river , ▁Saint - Martin ▁bro ok , ▁B ouch ard ▁bro ok , ▁Mor in ▁bro ok , ▁Mal ta is ▁bro ok , ▁Lé o - Jean ▁bro ok , ▁T rem bl ay ▁bro ok , ▁rivière ▁à ▁Benjamin , ▁Parad is ▁bro ok , ▁Ba ie ▁des ▁Ha ! ▁Ha !, ▁rivière ▁à ▁Mars , ▁Ha ! ▁Ha ! ▁River ; ▁ ▁south ▁side : ▁F ren ière ▁River , ▁La ▁Gros