▁liter . ▁The ▁specific ▁conduct ance ▁of ▁the ▁water ▁is ▁ 1 9 2 ▁micro - m hos . ▁The ▁specific ▁conduct ance ▁of ▁the ▁stream ▁is ▁nearly ▁twice ▁as ▁high ▁as ▁that ▁of ▁any ▁other ▁major ▁head water ▁trib ut ary ▁of ▁N es cope ck ▁Creek . ▁ ▁Long ▁Run ▁is ▁not ▁affected ▁by ▁acid ▁mine ▁d rain age . ▁ ▁Geography ▁and ▁ge ology ▁The ▁elev ation ▁near ▁the ▁mouth ▁of ▁Long ▁Run ▁is ▁ ▁above ▁sea ▁level . ▁The ▁elev ation ▁of ▁the ▁stream ' s ▁source ▁is ▁approximately ▁ ▁above ▁sea ▁level . ▁Long ▁Run ▁is ▁one ▁of ▁the ▁major ▁trib ut aries ▁of ▁N es cope ck ▁Creek . ▁ ▁Several ▁rock ▁form ations ▁occur ▁in ▁the ▁vic inity ▁of ▁the ▁waters hed ▁of ▁Long ▁Run . ▁These ▁include ▁the ▁M auch ▁Ch unk ▁Form ation , ▁the ▁Sp he ch ty ▁K opf ▁Form ation , ▁and ▁the ▁Po cono ▁Form ation . ▁ ▁W aters hed ▁The ▁waters hed ▁of ▁Long ▁Run ▁has ▁an ▁area ▁of ▁. ▁The ▁mouth ▁of ▁the ▁cre ek ▁is ▁in ▁the ▁United ▁States ▁Ge ological ▁Survey ▁quad rangle ▁of ▁Sy berts ville , ▁but ▁the ▁source ▁is ▁in ▁the ▁United ▁States ▁Ge ological ▁Survey ▁quad rangle ▁of ▁Fre eland . ▁The ▁waters hed ▁of ▁the ▁stream ▁is ▁in ▁the ▁north - central ▁part ▁of ▁the ▁N es cope ck ▁Creek ▁waters hed ▁and ▁is ▁on ▁the ▁edge ▁of ▁that ▁waters hed . ▁ ▁The ▁waters hed ▁of ▁Long ▁Run ▁contains