The 2018 Louisiana Water Quality Integrated Report was approved by EPA on November 20, 2019. Assessments contained in the 2018 IR are considered final and should be used for all activities requiring water quality assessments; pending EPA approval of the draft 2020 IR.
2018 Water Quality Assessments for Louisiana
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