▁was ▁introduced ▁in ▁ 1 9 4 7 . ▁▁ ▁At ▁Tur in , ▁Iowa , ▁the ▁Little ▁Si oux ▁River ▁has ▁a ▁mean ▁annual ▁dis charge ▁of ▁ 1 , 7 6 1 ▁cub ic ▁feet ▁per ▁second . ▁ ▁The ▁Little ▁Si oux ▁Valley ▁was ▁important ▁in ▁the ▁Spirit ▁Lake ▁Mass acre ▁of ▁ 1 8 5 7 , ▁when ▁the ▁S ante e ▁Si oux ▁chief ▁In k pad uta ▁made ▁for ays ▁as ▁far ▁down stream ▁as ▁Smith land . ▁The ▁river ▁valley ▁also ▁figures ▁prom in ently ▁in ▁fol kl ore ▁about ▁the ▁nin ete enth ▁century ▁out law , ▁J esse ▁James , ▁who ▁reported ly ▁used ▁the ▁se cluded ▁valley , ▁with ▁its ▁wood ed ▁rav ines , ▁as ▁a ▁hide out ▁and ▁a ▁route ▁north ▁to ▁Minnesota ▁during ▁the ▁ 1 8 7 0 s . ▁ ▁Ge olog ically , ▁the ▁Little ▁Si oux ▁r ises ▁in ▁a ▁region ▁of ▁gla cial ▁p oth oles ▁near ▁the ▁" I owa ▁Great ▁L akes " ▁( Sp irit ▁Lake , ▁and ▁East ▁and ▁West ▁Ok ob o ji ). ▁It ▁then ▁travers es ▁a ▁rich ▁agricult ural ▁region ▁on ▁its ▁way ▁to ▁the ▁Lo ess ▁Hills , ▁from ▁which ▁it ▁then ▁flows ▁out ▁onto ▁the ▁flo od plain ▁of ▁the ▁Missouri ▁River . ▁Through ▁much ▁of ▁its ▁middle ▁course ▁( i . e ., ▁from ▁L inn ▁Gro ve ▁to ▁Smith land ) ▁the ▁Little ▁Si oux ▁is ▁a ▁relatively ▁wild ▁me ander ed ▁stream