E ast - West ▁direction ) ▁coming ▁from ▁the ▁West ▁and ▁passing ▁north ▁of ▁“ Î le ▁au ▁P ain ▁de ▁Su cre ” ▁( English : ▁Sug arlo af ▁Island ); ▁the ▁R 1 0 2 3 ▁connect s ▁the ▁" James ▁Bay ▁Road " ▁( N orth - S outh ▁direction ) ▁that ▁comes ▁from ▁Mat ag ami ; ▁from ▁“ Î le ▁au ▁P ain ▁de ▁Su cre ”, ▁this ▁road ▁heads ▁north - east ▁to ▁the ▁west ▁side ▁of ▁Lac ▁Ro cher . ▁ ▁The ▁surface ▁of ▁Op ata ou aga ▁Lake ▁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 ▁Of ▁C ree ▁origin , ▁this ▁hyd ron ym ▁means ▁" the ▁lake ▁with ▁the ▁sand y ▁tip ". ▁This ▁to pon ym ic ▁design ation ▁is ▁indicated ▁in ▁the ▁" F if th ▁Report ▁of ▁the ▁Geographic ▁Board ▁of ▁Canada ▁ 1 9 0 4 ", ▁published ▁in ▁Ott awa ▁in ▁ 1 9 0 5 , ▁page ▁ 4 6 , ▁under ▁the ▁graph : ▁" Op ata w aga ; ▁Lake , ▁N ortheast ▁of ▁Matt ag ami ▁Lake , ▁Ab it ib i ▁District , ▁Que . ▁( Not ▁O pi w ata kan ) ". ▁ ▁The ▁to pon ym ▁Lake ▁Op ata ou aga ▁was ▁formal ized ▁on ▁December ▁ 5 , ▁ 1