bor ▁and ▁city ▁and ▁poor ▁tid al ▁mixing . ▁ ▁Federal ▁and ▁state ▁projects ▁ ▁Central ▁Valley ▁Project ▁As ▁early ▁as ▁the ▁ 1 8 7 0 s , ▁state ▁and ▁federal ▁ag encies ▁were ▁already ▁looking ▁at ▁the ▁Central ▁Valley ▁as ▁an ▁area ▁in ▁need ▁of ▁a ▁large ▁water ▁transport ▁project . ▁In ▁ 1 9 3 1 ▁California ' s ▁Department ▁of ▁Water ▁Resources ▁came ▁up ▁with ▁the ▁State ▁Water ▁Plan , ▁which ▁ent a iled ▁the ▁construction ▁of ▁d ams ▁and ▁can als ▁to ▁transport ▁water ▁from ▁the ▁Sac r amento ▁River ▁to ▁the ▁rapidly ▁dw ind ling ▁San ▁Jo aqu in . ▁The ▁project ▁was ▁still ▁in ▁its ▁planning ▁stages ▁when ▁the ▁Great ▁De pression ▁hit ▁the ▁United ▁States , ▁and ▁California ▁was ▁unable ▁to ▁raise ▁the ▁funds ▁necessary ▁for ▁building ▁the ▁various ▁facilities . ▁As ▁a ▁result ▁the ▁project ▁was ▁transferred ▁to ▁the ▁federal ▁government ▁and ▁switched ▁hands ▁several ▁times ▁between ▁the ▁U . S . ▁Army ▁Corps ▁of ▁Engine ers ▁( US ACE ) ▁and ▁U . S . ▁Bureau ▁of ▁Rec lam ation ▁( U SB R ) ▁before ▁finally ▁being ▁author ized ▁in ▁the ▁R ivers ▁and ▁Har b ors ▁Act ▁of ▁ 1 9 3 7 ▁as ▁a ▁USB R ▁undert aking ▁and ▁part ▁of ▁the ▁New ▁De al , ▁a ▁series ▁of ▁large - scale ▁re forms ▁and ▁construction ▁projects ▁intended ▁to ▁provide ▁jobs ▁for ▁the ▁millions ▁of ▁un emp loy ed ▁during ▁the ▁De pression . ▁ ▁Const ruction ▁of ▁Fri ant