. ▁It ▁is ▁a ▁third - order ▁stream . ▁A ▁significant ▁portion ▁of ▁the ▁waters hed ▁is ▁for ested . ▁However , ▁some ▁resident ial ▁areas , ▁such ▁as ▁Y ost ville , ▁Map le ▁Lake , ▁and ▁Spring ▁Brook ▁Village ▁are ▁in ▁the ▁stream ' s ▁vic inity . ▁The ▁stream ▁also ▁flows ▁through ▁an ▁urban ▁area ▁in ▁Mo os ic . ▁Its ▁head w aters ▁are ▁near ▁Y ost ville . ▁However , ▁only ▁a ▁few ▁square ▁miles ▁of ▁the ▁waters hed ▁is ▁urban . ▁Appro xim ately ▁ 6 0 ▁percent ▁of ▁the ▁stream ' s ▁waters hed ▁is ▁owned ▁by ▁the ▁Th eta ▁Company ▁as ▁of ▁ 2 0 0 6 . ▁ ▁Res er voir s ▁and ▁p onds ▁in ▁the ▁waters hed ▁of ▁Spring ▁Brook ▁include ▁the ▁Spring ▁Brook ▁In take , ▁the ▁N es b itt ▁Res er voir , ▁the ▁Wat res ▁Res er voir , ▁and ▁Map le ▁Lake . ▁The ▁first ▁three ▁are ▁used ▁as ▁drink ing ▁water ▁res er voir s ▁and ▁the ▁la kes ▁also ▁serve ▁as ▁flo od ▁protection . ▁The ▁Pennsylvania ▁American ▁Water ▁Company ▁own s ▁all ▁four ▁la kes ▁and ▁several ▁hundred ▁acres ▁of ▁the ▁surrounding ▁land . ▁There ▁are ▁flo od ▁le ve es ▁at ▁the ▁mouth ▁of ▁the ▁stream . ▁There ▁is ▁some ▁evidence ▁of ▁coal ▁min ing ▁on ▁a ▁r idge ▁over looking ▁the ▁area ▁in ▁the ▁stream ' s ▁vic inity . ▁However , ▁resident ial ▁enc ro achment ▁on ▁the ▁stream ' s