▁Brown ' s ▁Canal , ▁which ▁were ▁built ▁in ▁the ▁early ▁ 1 9 th ▁century , ▁were ▁connected ▁to ▁the ▁river . ▁The ▁G last on bury ▁Canal ▁used ▁the ▁course ▁of ▁the ▁River ▁Br ue ▁from ▁High bridge ▁to ▁C ri pp ' s ▁Bridge , ▁and ▁part ▁of ▁the ▁South ▁D rain ▁to ▁Ash c ott ▁Cor ner . ▁The ▁G last on bury ▁Canal ▁ran ▁for ▁just ▁over ▁ ▁through ▁two ▁lo cks ▁from ▁G last on bury ▁to ▁High bridge , ▁where ▁it ▁entered ▁the ▁River ▁Par rett ▁and ▁from ▁there ▁the ▁Br istol ▁Channel . ▁The ▁canal ▁was ▁author ised ▁by ▁Parliament ▁in ▁ 1 8 2 7 ▁and ▁opened ▁in ▁ 1 8 3 4 . ▁It ▁was ▁operated ▁by ▁The ▁G last on bury ▁Navigation ▁& ▁Canal ▁Company . ▁Most ▁of ▁it ▁was ▁abandoned ▁as ▁a ▁navigation ▁in ▁ 1 8 5 4 , ▁when ▁a ▁railway ▁was ▁built ▁along ▁the ▁to w path . ▁ ▁During ▁the ▁Second ▁World ▁War ▁the ▁Br ue ▁was ▁incorpor ated ▁into ▁G H Q ▁Line ▁and ▁many ▁pill box es ▁were ▁constructed ▁along ▁the ▁river . ▁G ants ▁Mill ▁at ▁Pit com be , ▁near ▁Br ut on , ▁is ▁a ▁wat erm ill ▁which ▁is ▁still ▁used ▁to ▁mill ▁cattle ▁feed . ▁A ▁ ▁hydro elect ric ▁tur bine ▁was ▁recently ▁installed ▁at ▁the ▁site . ▁There ▁has ▁been ▁a ▁mill ▁here ▁since ▁the ▁ 1 3 th ▁century , ▁but ▁the ▁current ▁building ▁was ▁built ▁in