Quick Link to Water Quality Assessments in Louisiana

Water Quality Assessments

Surface waters of Louisiana are assessed every even numbered year as a requirement of the National Clean Water Act. These reports have been commonly called by several different names over the years since the inception of this reporting requirement. The most common names are the 305(b) Report, Water Quality Inventory, and most recently the Integrated Report. The commonly called 303(d) list is a subset of the 305(b) report, and consists of a list of water bodies impaired for one or more designated uses and requiring a Total Maximum Daily Load (TMDL) to be developed. The combination of the 305(b) report and 303(d) list is now commonly referred to as the Integrated Report. The full text of these reports from 1996 - 2006 can be found at Water Quality Integrated Report (305(b)/303(d)). 

Direct access to the assessment summary tables for those years available electronically is provided below.

  • 1996
  • 1998
  • 2000
  • 2002 
  • 2004       
  • 2006      
  • 2008        The final draft of the 2008 Louisiana Water Quality Inventory: Integrated Report was submitted to EPA Region 6 on August 25, 2009. This represents LDEQ's final draft of the Integrated Report. Included in this report is LDEQ's Response to Comments received duiring the public notice of this document in 2008. EPA Region 6 will post their final decision on the 303(d) List in the Federal Register. 

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