▁mine ▁d rain age . ▁It ▁is ▁considered ▁to ▁be ▁Class ▁A ▁Wild ▁Tr out ▁W aters , ▁a ▁Cold water ▁Fish ery , ▁and ▁a ▁Mig rat ory ▁Fish ery . ▁The ▁stream ▁has ▁two ▁un named ▁trib ut aries ▁and ▁at ▁least ▁one ▁bridge ▁cross es ▁it . ▁ ▁Cour se ▁Long ▁Run ▁begins ▁on ▁the ▁southern ▁side ▁of ▁a ▁r idge ▁in ▁Butler ▁Township . ▁It ▁flows ▁west - s outh west ▁for ▁several ▁t enth s ▁of ▁a ▁mile ▁before ▁crossing ▁Inter state ▁ 8 0 ▁and ▁turning ▁south . ▁After ▁some ▁distance , ▁the ▁stream ▁receives ▁an ▁un named ▁trib ut ary ▁from ▁the ▁left ▁and ▁turns ▁west ▁for ▁a ▁few ▁hundred ▁feet . ▁It ▁then ▁receives ▁another ▁un named ▁trib ut ary ▁from ▁the ▁right . ▁After ▁this , ▁the ▁stream ▁turns ▁sout heast ▁and ▁passes ▁through ▁a ▁large ▁p ond ▁before ▁turning ▁south west . ▁After ▁a ▁few ▁t enth s ▁of ▁a ▁mile , ▁it ▁turns ▁west ▁and ▁reaches ▁its ▁confl u ence ▁with ▁N es cope ck ▁Creek . ▁ ▁Long ▁Run ▁joins ▁N es cope ck ▁Creek ▁ ▁up stream ▁of ▁its ▁mouth . ▁ ▁H ydro log y ▁Long ▁Run ▁is ▁slightly ▁acid ic , ▁with ▁a ▁p H ▁of ▁ 6 . 6 . ▁The ▁total ▁concentration ▁of ▁al kal inity ▁in ▁the ▁stream ' s ▁waters ▁is ▁ 4 ▁mill igr ams ▁per ▁liter ▁and ▁the ▁total ▁concentration ▁of ▁water ▁hard ness ▁is ▁ 2 1 ▁mill igr ams ▁per