Where along Louisiana's coast are marshes affected by the Brown Marsh phenomenon? <!-- vegetation, geography -->
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USGS Frequently Asked Questions

Question: Where along Louisiana's coast are marshes affected by the Brown Marsh phenomenon?

Answer:

The phenomenon of brown marsh has been observed along Louisiana's coastline. Hardest hit is the Barataria- Terrebonne estuary extending from the west side of the Mississippi River to the Atchafalaya River. Least affected marshes appear to be those lying east of the Mississippi River.

Source of this FAQ:
http://brownmarsh.net/factSheets/brown%20marsh%20Q%20and%20A.pdf

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