20th and 21st centuries Mississippi River
the big freeze of 1918–19 blocked river traffic north of memphis, tennessee, preventing transportation of coal southern illinois. resulted in widespread shortages, high prices, , rationing of coal in january , february.
in spring of 1927, river broke out of banks in 145 places, during great mississippi flood of 1927 , inundated 27,000 sq mi (70,000 km) depth of 30 feet (9.1 m).
in 1962 , 1963, industrial accidents spilled 3.5 million gallons (13,000,000 l) of soybean oil mississippi , minnesota rivers. oil covered mississippi river st. paul lake pepin, creating ecological disaster , demand control water pollution.
on october 20, 1976, automobile ferry, mv george prince, struck ship traveling upstream ferry attempted cross destrehan, louisiana, luling, louisiana. seventy-eight passengers , crew died; eighteen survived accident.
in 1988, water level of mississippi fell 10 feet (3.0 m) below 0 on memphis gauge. remains of wooden-hulled water craft exposed in area of 4.5 acres (18,000 m) on bottom of mississippi river @ west memphis, arkansas. dated late 19th 20th centuries. state of arkansas, arkansas archeological survey, , arkansas archeological society responded two-month data recovery effort. fieldwork received national media attention news in middle of drought.
the great flood of 1993 significant flood, affecting mississippi above confluence ohio river @ cairo, illinois.
two portions of mississippi designated american heritage rivers in 1997: lower portion around louisiana , tennessee, , upper portion around iowa, illinois, minnesota , missouri. nature conservancy s project called america s rivershed initiative announced report card assessment of entire basin in october 2015 , gave grade of d+. assessment noted aging navigation , flood control infrastructure along multiple environmental problems.
campsite @ river in arkansas
in 2002, slovenian long-distance swimmer martin strel swam entire length of river, minnesota louisiana, on course of 68 days. in 2005, source sea expedition paddled mississippi , atchafalaya rivers benefit audubon society s upper mississippi river campaign.
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