The North Coast Basin/Lower Columbia

Positive actions are being undertaken and accomplished to improve water quality in the North Coast Basin rivers and tributaries. We appreciate your interest and involvement. Together we can work towards a better river environment for everyone.

Addendum #1 - Modifications to Temperature WLAs North Coast Subbasins Wilson-Trask-Nestucca Subbasin Nestucca Bay Watershed Tillamook Bay Watershed Clatsop Plains Lake Management Report Basin Contact Information

Addendum #1
Modifications to the North Coast Basin Temperature Waste Load and Load Allocations
Applies to all North Coast Subbasins

• Order Memorandum PDF
• Addendum #1 Modifications to North Coast Basin Temperature Waste Load and Load Allocations PDF
• Response to Public Comment, including EPA's letter PDF

North Coast Subbasins
Lower Columbia-Youngs, Lower Columbia-Clatskanie, Necanicum and Nehalem

TMDL approved by the U.S. Environmental Protection Agency (EPA) on August 20, 2003

• Addendum - Clarifications to North Coast Subbasins TMDL PDF
• TMDL Order Memorandum PDF
   
• Total Maximum Daily Load (TMDL) PDF 4.3mb
• Appendix A Part 1: Temperature Technical Analysis PDF 4.4mb
• Appendix A Part 2: Temperature Technical Analysis PDF 1.3mb
• Appendix A Part 3: Temperature Technical Analysis PDF 2.1mb
• Appendix B: Bacterial Modeling PDF 1.1mb
• Appendix C: Selected Oregon Administrative Rules and Revised Statutes PDF
• Appendix D: Water Quality Management Plan PDF
• Appendix D: Agricultural Management Plan PDF
• Appendix E: Nehalem Bay Management Plan for Commercial Shellfish Harvest PDF
• Appendix F: Salmonid Fish Habitat Use Schedule for North Coast Subbasins PDF
   
• Response to Public Comment PDF

Wilson-Trask-Nestucca Subbasin

Nestucca Bay Watershed

TMDL approved by EPA on May 13, 2002

• General Information about the Nestucca Bay Watershed and TMDLs PDF
   
• Total Maximum Daily Load (TMDL) and Water Quality Management Plan (WQMP) PDF 12.9mb
    
• Response to Public Comment PDF

Tillamook Bay Watershed

TMDL approved by EPA on July 31, 2001

• Tillamook Bay Watershed Information PDF
   
• Total Maximum Daily Load (TMDL) PDF 4.7mb
• Appendices A through E PDF 13.5mb
   
• Response to Public Comment PDF

Contact Information

• North Coast Basin Coordinator: York Johnson  e-mail  503-322-2222 or Bruce Apple e-mail  503-842-3038
   
• DEQ Northwest Region Office Information
• Basin Coordinator List PDF

[print version]