Skip to main content

Oregon State Flag An official website of the State of Oregon »

Grande Ronde Basin

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


For specific basin coordinators for the Grande Ronde Basin, see the Basin Coordinator List.