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US Army Corps of Engineers
Mississippi Valley Division

Water Quality

Water quality refers to the chemical, physical, and biological characteristics of water and has been a key factor in ecohydrology.  In 2011, the Mississippi River reached flood heights near those of the flood of 1927.  The Mississippi River and Tributaries System 2011 Post-flood Report documents the flood event, the U.S. Army Corps of Engineers response and the performance of the MR&T systems.  Appendix F, Environmental and Cultural Resources contains materials related to water quality: 

  • Section II is the USGS Water Science Center's report concerning Water Quality in the Lower Mississippi-Atchafalaya River Basin during the 2011 Flood, April through July. (Read Sections II and III)
  • Section III is the Water Quality Data Collection and Analyses, and it includes figures and tables referenced in Section II. (Read Sections II and III)
  • Section IV is the  USGS Water Science Center's report concerning Water-Quality and Phytoplankton Communities in Lake Pontchartrain Before, During and After the Bonnet Carre' Spillway Openings in 2008 and 2011. (Read Section IV)