▁Lake ▁Cou lee ▁Creek . ▁In ▁the ▁ 1 9 3 0 s , ▁the ▁construction ▁of ▁Lake ▁On al aska ▁resulted ▁in ▁the ▁flo oding ▁and ▁event ual ▁disapp earance ▁of ▁a ▁shall ow , ▁natural ▁body ▁of ▁water , ▁R ice ▁Lake , ▁and ▁several ▁smaller ▁p onds ▁in ▁the ▁Black ▁River ▁bottom s ▁area . ▁ ▁Br ice ▁Pra irie ▁is ▁an ▁urban ▁reserve ▁area ▁within ▁the ▁City ▁of ▁On al aska , ▁located ▁below ▁the ▁r idge ▁on ▁which ▁most ▁of ▁the ▁city ▁is ▁situated . ▁It ▁lies ▁to ▁the ▁north west ▁of ▁the ▁city ' s ▁current ▁northern ▁border , ▁and ▁is ▁directly ▁on ▁Lake ▁On al aska . ▁ ▁Dem ograph ics ▁ ▁According ▁to ▁ 2 0 0 9 - 2 0 1 3 ▁A CS ▁estimates , ▁the ▁median ▁household ▁income ▁was ▁$ 5 5 , 9 8 2 ▁and ▁the ▁median ▁family ▁income ▁was ▁$ 7 4 , 1 8 2 . ▁M ales ▁had ▁a ▁median ▁income ▁of ▁$ 4 7 , 7 4 5 ▁versus ▁$ 3 5 , 2 9 2 ▁for ▁females . ▁The ▁per ▁cap ita ▁income ▁for ▁the ▁city ▁was ▁$ 3 1 , 4 9 1 . ▁About ▁ 3 . 4 % ▁of ▁families ▁and ▁ 6 . 8 % ▁of ▁the ▁population ▁were ▁below ▁the ▁pover ty ▁line , ▁including ▁ 8 . 1 % ▁of ▁those ▁under ▁age ▁ 1 8 ▁and ▁ 1 1 . 1 % ▁of ▁those ▁age ▁ 6 5