Total Maximum Daily Loads

Positive actions are being undertaken and accomplished to improve water quality in the Grande Ronde River and its tributaries. We appreciate your interest and involvement. Together we can work towards a better river environment for everyone.

Forward looking infrared remote sensing survey reports

Lower Grande Ronde subbasins

Includes the Wallowa, Imnaha, and Lower Grande Ronde subbasins   

Approved by the U.S Environmental Protection Agency on Sept. 24, 2010

Download the entire document: Lower Grande Ronde Total Maximum Daily Load

Response to Public Comment

Upper Grande Ronde subbasin

TMDL approved by EPA on May 3, 2000

​Contact

Grande Ronde Basin CoordinatorTonya Dombrowski, Pendleton
541-278-4615

Basin Coordinator List