Sandy Basin

TMDL approved by EPA on April 14, 2005

Total Maximum Daily Load and Water Quality Management Plan
Order Memorandum
Response to public comments

Sandy Basin: The Lower Columbia-Sandy Subbasin TMDL for temperature was adopted by the Environmental Quality Commission into rule on Aug. 6, 2024. EPA approved the TMDL on Sept. 12, 2024. The temperature TMDLs are online here: Lower Columbia-Sandy Subbasin Temperature TMDL. Please note that the hyperlinks for this item go to zip files that contain the staff report, attachments and appendices for each TMDL. The updated 2024 temperature TMDLs replaces existing temperature TMDLs for the Lower Columbia-Sandy Subbasin.