Yurok Tribe Monitoring Results for Klamath River Cyanobacteria and Microcystin October 20th, 2016 Karuk Tribe Monitoring Results for Klamath River Cyanobacteria and Microcystin October 21st, 2016 PacifiCorp's Monitoring Results for Klamath River Cyanobacteria and Microcystin, November 1st, 2016 Yurok Tribe Monitoring Results for Klamath River Cyanobacteria and Microcystin November 17th, 2016 PacifiCorp's Monitoring Results for Klamath River Cyanobacteria and Microcystin December 21st, 2016

_ Blue-green Algae Official Notifications River reaches which exceed applicable criteria for public health are indicated by different colors on the map that vary depending on the number of tiers within each jurisdiction's advisory thresholds. Advisory colors within the map are: Oregon California Yurok Tribe exceeds health thresholds identified in the appropriate guidance) by river reaches bounded by public health monitoring locations. The Blue-Green Algae Tracker identifies blue-green algae public health threats (i.e. The Tracker utilizes current information to track and map the blue-green algae blooms throughout the Klamath Basin. The BGA Tracker Map was built to inform the public and research community regarding river conditions. June 17th, 2022- All other reaches of the Klamath River are below posting threshold. Advisory signs have been posted at public access points and will remain in place until this reach has been de-posted. June 17th, 2022- Copco Reservoir has been posted at the 'Caution' trigger level based on microcystin samples collected on 6/7/22 that exceed recommended trigger levels. This supersedes the June 17th 'Caution' advisory. July 22nd, 2022- Copco Reservoir has been posted at the 'Danger' level based on microcystin samples collected on 7/12/22 that exceed recommended trigger levels. This expands the advisory initially issued on 7/1/22 for Shoalwater Bay to include all areas of Upper Klamath Lake due to the presence of a cyanobacteria bloom and cyanotoxins above recreational use values for human exposure. _ U pdated Posting StatusĨ/3/22- Klamath River from Weitchpec to Klamath Glen (Roy Rook) has been posted at Caution Level 1 due to the presence of microcystin in samples collected on July 26th and 27th. Advisory signs have been posted at public access points and will remain in place until this reach has been de-posted.ħ/28/22- Upper Klamath Lake has been issued a recreational use health advisory. View the Klamath BGA Tracker Interactive Map For more information, please check California's HAB Incident Reports Map. If river conditions exceed public health standards for toxic algae the area is posted with a health advisory sign. Blue-green algae monitoring typically occurs May - November. In the Klamath Basin blue-green algae blooms typically occur between June and October when temperatures rise and water conditions are favorable for algal growth.

Scum map water locations