2018 Water Quality Inventory: Integrated Report (305(b)/303(d))

The assessments contained in the 2018 Louisiana Water Quality Integrated Report were superseded by the 2020 IR on February 22, 2021 and by subsequent IRs after that. The 2018 IR was approved by EPA on November 20, 2019 and is included here only for historical reference. 

2018 Water Quality Assessments for Louisiana (SUPERSEDED)

2018 IR Map Graphic

Full Text of 2018 Integrated Report 

Appendix A: 2018 Water Quality Assessments for Louisiana (FINAL APPROVED) (Excel, PDF)  

Appendix A: 2018 Integrated Report Basin Descriptions and Water Body Maps

EDMS Link for Appendices B-E: Described below

Appendix B: 2018 Category 1 Addendum - Appendix B contains waterbodies and suspected causes of impairment that were formerly considered impaired in the 2016 Integrated Report. They are no longer considered impaired based on the 2018 Integrated Report. More recent data or information was used to make this determination during development of the 2018 Integrated Report.

Appendix C: Complete List of Suspected Causes of Impairment 

Appendix D: Complete List of Suspected Sources of Impairment

Appendix E: Complete List of Louisiana's Ambient Surface Water Quality Network Sites

Appendix F: Public Comments on the 2018 Integrated Report and LDEQ's Response to Comments 

Appendix G: Louisiana's 2018 Section 303(d) List (Excel)