{"id":12082,"date":"2023-12-13T18:55:11","date_gmt":"2023-12-13T17:55:11","guid":{"rendered":"https:\/\/www.aboutriver.com\/?p=12082"},"modified":"2023-12-13T18:55:11","modified_gmt":"2023-12-13T17:55:11","slug":"what-caused-the-mississippi-river-to-rise-in-1927","status":"publish","type":"post","link":"https:\/\/www.aboutriver.com\/what-caused-the-mississippi-river-to-rise-in-1927\/","title":{"rendered":"What Caused The Mississippi River To Rise In 1927"},"content":{"rendered":"
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In 1927, the Mississippi River rose dramatically to change the course of Mississippi’s history and create a humanitarian crisis. The event occurred during one of the most extreme floods to have ever occurred in the United States. Homes, businesses and marshlands along the river basin were heavily impacted, with some cities virtually submerged by the raging water. According to the United States Geological Survey, the river levels peaked at over 23 feet and flooded an estimated 19,000 square miles. There were several contributing factors that led to this catastrophic event.<\/p>\n

The most prominent factor was the high amount of precipitation that was deposited into the Mississippi River basin in late 1926 and early 1927. This was caused by the La Niña climate pattern, which is characterized by high pressure over the Gulf of Mexico, which leads to an increased number of storms in this area. This resulted in an estimated 180% of the usual seasonal rainfall being deposited into the Mississippi River basin. This excessive rainfall was compounded by melting snow from the Appalachians and other mountain ranges that filled tributaries and swelled the Mississippi River’s levels beyond the capacity of major levies and drainage systems.<\/p>\n

Secondary factors included a hesitant response from the US government. Initially, the federal government failed to act quickly to address the issue. There was disagreement between the Army Corps of Engineers and the Bureau of Reclamation regarding their respective roles in responding to the flood. This dispute and a lack of communication between the two government agencies meant that efforts to respond to the flooding were too slow. This lack of preparedness ultimately contributed to the devastation caused by the flood.<\/p>\n

Additionally, the ingenuity of the Mississippi River basin’s inhabitants further exacerbated the situation. People who lived on the banks and around the bottomlands created levees to protect their homes and property. While their intentions were admirable, the levees cluttered the riverbanks, creating a bottleneck of water that could not disperse, which in turn caused the banks of the river to overflow and heightened the impact of floods.<\/p>\n