^■'-- 



STA. UO - OnuiMBIA RIV^Ti AT ROCK ISLAND 



3TA. Ij2 - LAKF ^I^'^f^'^nRE" 



STA. U3 - NASON CRE^K NKAR MOUTH 



3TA. hh - CHTOAWA RIVER NEAR MOUTH 



11 



PLATE III 



