{"id":12876,"date":"2023-11-06T15:00:13","date_gmt":"2023-11-06T14:00:13","guid":{"rendered":"https:\/\/www.aboutriver.com\/?p=12876"},"modified":"2023-11-06T15:00:13","modified_gmt":"2023-11-06T14:00:13","slug":"is-the-mississippi-river-brackish-water","status":"publish","type":"post","link":"https:\/\/www.aboutriver.com\/is-the-mississippi-river-brackish-water\/","title":{"rendered":"Is The Mississippi River Brackish Water"},"content":{"rendered":"
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The Mississippi River is approximately 2,350 miles of wetlands, streams, lakes, and rivers that flow through many of the U.S. states. It is the fourth longest river in the nation, and one of the most iconic in terms of its significance in the American story. The Mississippi River is the second largest watershed in the United States, and its size and importance have led many researchers to question whether the river is brackish water or not. <\/p>\n

The general understanding of what qualifies as brackish water is that it is water that contains a higher level of salt or calcium carbonate than is found in freshwater. In this regard, the Mississippi River does indeed contain a higher level of sediments than other freshwater sources, but it is not classified as brackish water due to the lack of salinity in its composition. The higher presence of sediment can lead to some areas near the mouth of the river having higher salt concentrations, but is not actually brackish water. <\/p>\n

Infact, much of the salt present in the river comes from the mixing of naturally-occurring lake water with liquid runoff. While the sediment level remains quite high, it is still less than the level of salinization required to classify the water as brackish. In addition, the geographic characteristics of the Mississippi are not typical of brackish bodies of water, as it has few estuaries and is rather a continuous body of fresh water. Therefore, the Mississippi River is not actually brackish water, and its presence in the Continental Divide indicates that it should remain a source of freshwater for the foreseeable future. <\/p>\n

Nevertheless, there are certain parts of the Mississippi River which may be principally brackish in nature due to their composition. The Gulf of Mexico is a prime example, which is fed by the river’s main streams, which contain an abundance of salt, calcium, and other minerals. This puts the Gulf of Mexico into a brackish-water classification, and though it still remains part of the Mississippi River system, it appears to be slowly evolving into a brackish body of water due to the salt and minerals introduced by the rivers. <\/p>\n