Title
EQC202505ItemBAttF
Record Number
DETP/25/1495
Classification
Notes
Item B: Willamette River Mainstem and Major Tributaries TMDL (Action)
DEQ will present a revised Total Maximum Daily Load, or TMDL, to address temperature impairments in the Willamette River Mainstem and Major Tributaries. This rulemaking is part of a court order to update and replace multiple temperature TMDLs to make them consistent with current temperature standards. DEQ will request the commission adopt the Willamette River Mainstem and Major Tributaries TMDL as an amendment to the Willamette Subbasins TMDLs for temperature adopted by the commission in August 2024, by reference into rule.
Attachments (Note: Attachment A is included in the staff report linked above.)
Attachment B Total Maximum Daily Load
Attachment C Water Quality Management Plan
Attachment D Technical Support Document
Attachment E TMDL and WQMP redline
Attachment F Technical Support Document redline
Attachment G Response to Comments
TSD Appendices (Note: Only listing appendices being changed by this rulemaking.)
Appendix A Heat Source Model Report
Appendix D Assessment Units
Appendix G Climate Change Summary
Appendix H Interactive Map
Appendix J Calibration Report
Appendix K Model Scenario Report
Appendix L McKenzie Model Scenario Report
Appendix M Willamette River Mainstem and Major Tributaries Model Scenario Report
Item B Presentation Slides
File size
18.96 MB
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