Upper Klamath Lake Drainage Total Maximum Daily Load (TMDL) and Water Quality Management Plan (WQMP)

The Upper Klamath Lake drainage is comprised of three 4th field hydrologic units (i.e. the Upper Klamath Lake subbasin, the Williamson River subbasin, and the Sprague River subbasin) and has stream segments listed on the 1998 Oregon 303(d) list for: temperature, dissolved oxygen (DO), chlorophyll-a, pH, and habitat modification. The TMDL developed in this document for each of the 303(d) water quality parameters identifies pollutants and establishes loading limits designed to comply with water quality standards. Habitat and flow modification concerns are identified under biological criteria standard exceedance and will be addressed in management plans to be developed by designated management agencies (DMAs). As they are not pollutants, TMDLs will not be developed for habitat and flow modification. Chlorophyll-a is listed in the Oregon Administrative Rules (OAR) as a “nuisance criteria” and will be addressed in the Water Quality Management Plan (WQMP).