▁reproduce ▁in ▁Spring ▁Brook ▁from ▁its ▁head w aters ▁down stream ▁to ▁its ▁mouth . ▁A ▁ 2 . 4 - mile ▁( 4 - kil ometer ) ▁section ▁of ▁the ▁stream ▁from ▁the ▁Wat res ▁Dam ▁down stream ▁to ▁the ▁N es b itt ▁Res er voir ▁is ▁considered ▁by ▁the ▁Pennsylvania ▁Fish ▁and ▁Bo at ▁Commission ▁to ▁be ▁Class ▁A ▁Wild ▁Tr out ▁W aters ▁for ▁both ▁bro ok ▁tr out ▁and ▁brown ▁tr out . ▁The ▁trib ut aries ▁Green ▁Run ▁and ▁Pan ther ▁Creek ▁are ▁Class ▁A ▁Wild ▁Tr out ▁W aters ▁for ▁bro ok ▁tr out ▁and ▁part ▁of ▁the ▁trib ut ary ▁R att les nake ▁Creek ▁is ▁Class ▁A ▁Wild ▁Tr out ▁W aters ▁for ▁both ▁bro ok ▁tr out ▁and ▁brown ▁tr out . ▁ ▁N umer ous ▁macro in verte br ate ▁species ▁have ▁been ▁observed ▁in ▁Spring ▁Brook . ▁A ▁total ▁of ▁ 1 8 ▁gener a ▁are ▁from ▁the ▁orders ▁E ph emer optera , ▁Ple cop tera , ▁and ▁Tr ich optera . ▁A ▁short ▁distance ▁up stream ▁of ▁the ▁Wat res ▁Res er voir , ▁the ▁most ▁common ▁gener a ▁tax a ▁were ▁the ▁family ▁Ch ir onom idae ▁and ▁the ▁gener a ▁D run ella , ▁E ph emer ella , ▁and ▁H ydro ps y che . ▁Of ▁a ▁ 2 0 0 - ind ividual ▁sample , ▁ 3 4 , ▁ 2 8 , ▁ 2 5 , ▁and ▁ 2 0 ▁individuals ▁of ▁each ▁tax