Total Maximum Daily Loads

The Upper Klamath and Lost River TMDL was first issued in May 2010. At that time the U.S. Environmental Protection Agency approved all of the components of the TMDL except for temperature. During this time it was also noted that seven entities affected by the TMDL in Klamath County petitioned the DEQ director to reconsider various components of the TMDL. The director granted the reconsideration based on these petitions.
 
DEQ responded to reconsideration petitions and released a draft modified TMDL for public review and comment in April 2017. Following this public review and comment period, DEQ issued the modified nutrient TMDL and submitted to EPA for approval in December 2017.
 

DEQ issues revised Klamath and Lost River Total Maximum Daily Load - July 2018

The Upper Klamath and Lost River TMDL was first issued in May 2010. At that time the U.S. Environmental Protection Agency approved all of the components of the TMDL except for temperature. During this time it was also noted that seven entities affected by the TMDL in Klamath County petitioned the DEQ director to reconsider various components of the TMDL. The director granted the reconsideration based on these petitions.
 
DEQ responded to reconsideration petitions and released a draft modified TMDL for public review and comment in April 2017. Following this public review and comment period, DEQ issued the modified nutrient TMDL and submitted to EPA for approval in December 2017.
 
In 2018, DEQ made changes to the Upper Klamath and Lost River Subbasins TMDL in response to requests for reconsideration. These changes will affect the Water Management Districts and how they are referenced in the TMDL and associated Water Quality Management Plan. DEQ has removed the reference to the Water Management Districts as Designated Management Agencies and instead refers to them as Responsible Persons. The revised TMDL is below and titled Upper Klamath and Lost River Subbasins TMDL and Water Quality Management Plan July 2018. Please see the public notice document for additional details .

​Butte Subbasin

TMDL Not Started (Minimal or no activity)

Upper Klamath Lake Drainage: Sprague, Upper Klamath Lake and Williamson Subbasins

TMDL approved by the U.S. Environmental Protection Agency on Aug. 7, 2002

     Supporting Documentation:

Upper Klamath and Lost River Subbasins

TMDL issued by DEQ and submitted to EPA for approval on Dec. 21, 2010.

Memorandums of Agreement

Forward looking infrared remote sensing survey reports

​Contact

Klamath Basin Coordinator:
Mike Hiatt, Klamath Falls
541-273-7002