Lost River, Upper TMDL

The Upper Lost River watershed (the Lost River upstream of the Oregon border, including Clear Lake Reservoir and tributaries) was delisted from the Section 303(d) List for nutrients and water temperature impairments in 2006, as North Coast Regional Water Quality Control Board (Regional Water Board) staff analyses concluded that the listings were not warranted. The TMDL analysis document and response to comments are available below.

  (Page last updated 8/23/17)