united states bureau of reclamation · 5500 5000 4500 4000 3500 < 3000 2500 2000 1500 1000 500...
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- United States Bureau of Reclamation · 5500 5000 4500 4000 3500 < 3000 2500 2000 1500 1000 500 Fig.A3-Observed:Three-Year Duration, Drought End-years Labeled 1931 1 ego 1934 gg4 Return
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