▁Bor ough ▁of ▁King ston ▁upon ▁Th ames ▁Category : History ▁of ▁Sur rey ▁Category : Is lands ▁of ▁London ▁Category : Is lands ▁of ▁the ▁River ▁Th ames ▁Category : S qu ats ▁in ▁the ▁United ▁Kingdom <0x0A> </s> ▁The ▁Ch aya ▁River ▁( Russ ian : ▁Ре ка ▁Ча я ) ▁is ▁a ▁trib ut ary ▁on ▁the ▁upper ▁left - bank ▁side ▁stream ▁of ▁the ▁Ob ▁River ▁located ▁in ▁the ▁Ch ain sky ▁and ▁Kol pas he v sky ▁districts ▁of ▁Russia ' s ▁Tom sk ▁O blast . ▁The ▁river ▁is ▁formed ▁by ▁the ▁confl u ence ▁of ▁two ▁rivers : ▁the ▁Bak char ▁and ▁Par big ▁rivers . ▁ ▁Water ▁Reg istry ▁Data ▁ ▁The ▁Ch aya ▁River ▁is ▁ 1 9 4 ▁kilom eters ▁long . ▁It ▁flows ▁into ▁the ▁Ob ▁river ▁ 2 4 0 3   km ▁from ▁the ▁Ob ' s ▁mouth . ▁The ▁catch ment ▁area ▁is ▁ 2 7 , 0 0 0 ▁square ▁kilom eters . ▁It ▁belongs ▁to ▁the ▁Ver kh ni y ▁O be ▁bas in ▁district ▁( 1 3 ). ▁ ▁References ▁▁ ▁Category : R ivers ▁of ▁Tom sk ▁O blast <0x0A> </s> ▁Op el ▁Arena ▁( ; ▁st yl ised ▁as ▁O PE L ▁AR EN A ; ▁also ▁known ▁as ▁the ▁ 1 . ▁F SV ▁Main z ▁ 0 5 ▁Arena ▁due ▁to ▁UEFA ▁spons or ship ▁reg ulations ) ▁is ▁a ▁multi - pur pose ▁stad ium ▁in ▁Main z , ▁Rh in