▁( grand par ents ▁of ▁Queensland ▁politician ▁Russ ▁Hin ze ) ▁who ▁lived ▁in ▁the ▁valley ▁that ▁was ▁flo oded ▁by ▁the ▁dam . ▁ ▁Location ▁and ▁features ▁ ▁The ▁dam ▁is ▁located ▁in ▁Ad van c et own , ▁ ▁south - west ▁of ▁N er ang ▁immediately ▁down stream ▁of ▁the ▁confl u ence ▁of ▁the ▁N er ang ▁River ▁and ▁Little ▁N er ang ▁Creek . ▁ ▁The ▁earth fill ▁dam ▁structure ▁is ▁ ▁high ▁and ▁ ▁long . ▁The ▁ ▁dam ▁wall ▁holds ▁back ▁the ▁ ▁res er voir ▁when ▁at ▁full ▁capacity . ▁From ▁a ▁catch ment ▁area ▁of ▁ ▁that ▁includes ▁the ▁N umin bah ▁Valley ▁and ▁Spring bro ok ▁Pl ate au , ▁with ▁most ▁being ▁contained ▁within ▁state ▁for ests ▁and ▁national ▁par ks , ▁the ▁dam ▁creates ▁Ad van c et own ▁Lake , ▁with ▁a ▁surface ▁area ▁of ▁. ▁The ▁un control led ▁un - g ated ▁sp ill way , ▁located ▁at ▁ ▁above ▁sea ▁level , ▁has ▁a ▁dis charge ▁capacity ▁of ▁. ▁Initial ly ▁managed ▁by ▁the ▁Gold ▁Coast ▁City ▁Council ▁up ▁until ▁ 2 0 0 8 , ▁the ▁dam ▁is ▁now ▁managed ▁by ▁Seq water . ▁ ▁The ▁dam ▁also ▁provides ▁the ▁benefit ▁of ▁flo od ▁mit ig ation ▁to ▁populated ▁areas ▁along ▁the ▁N er ang ▁River ▁down stream ▁of ▁the ▁dam . ▁ ▁Const ruction ▁ ▁The ▁South port ▁Town ▁Council ▁planned ▁the ▁dam ▁in ▁ 1 9 4 7 . ▁It ▁was ▁completed ▁in ▁