se ▁River , ▁a ▁per enn ial ▁river ▁that ▁is ▁part ▁of ▁the ▁Haw kes bury - Ne pe an ▁catch ment , ▁is ▁located ▁in ▁the ▁Blue ▁Mountains ▁region ▁of ▁New ▁South ▁Wales , ▁Australia . ▁ ▁Cour se ▁and ▁features ▁The ▁Gro se ▁River ▁r ises ▁from ▁north ▁east ▁of ▁Mount ▁Victoria ▁within ▁the ▁Blue ▁Mountains ▁National ▁Park , ▁and ▁flows ▁through ▁the ▁Gro se ▁Valley ▁and ▁parts ▁of ▁the ▁Gre ater ▁Blue ▁Mountains ▁Area ▁World ▁Heritage ▁Site , ▁generally ▁north , ▁sout heast , ▁then ▁east , ▁joined ▁by ▁four ▁trib ut aries , ▁before ▁reaching ▁its ▁confl u ence ▁with ▁the ▁Haw kes bury ▁River ▁west ▁of ▁Ag nes ▁B anks . ▁The ▁river ▁desc ends ▁ ▁over ▁its ▁ ▁course . ▁ ▁H ik ing ▁is ▁a ▁popular ▁activity ▁and ▁the ▁best ▁access ▁method ▁to ▁the ▁Gro se ▁River ▁in ▁its ▁upper ▁reaches . ▁There ▁are ▁several ▁well ▁maintained ▁wal ks ▁that ▁follow ▁scen ic ▁sections ▁of ▁the ▁river ▁valley . ▁One ▁of ▁the ▁most ▁popular ▁is ▁through ▁the ▁Blue ▁G um ▁Forest , ▁located ▁at ▁the ▁j unction ▁of ▁the ▁Gro se ▁River ▁and ▁G ov et ts ▁Creek . ▁ ▁The ▁river ▁was ▁named ▁in ▁September ▁ 1 7 9 3 ▁in ▁honour ▁of ▁Lieutenant ▁Governor ▁Francis ▁Gro se . ▁ ▁The ▁Gro se ▁River ▁sub catch ment ▁is ▁located ▁in ▁the ▁Haw kes bury – Ne pe an ▁catch ment . ▁Over ▁ 8 0 % ▁of ▁the ▁sub catch ment ▁is ▁reserved ▁as ▁part