KBMP Vision

The Klamath Basin Monitoring Program facilitates the coordination and implementation of water quality monitoring in support of the stewardship, protection, and restoration of all beneficial uses within the Klamath River watershed, with the ultimate goal of restoring water quality. Learn More

Fish Health

 Readiness Level

 KlamathFishIcon red

Mainstem Klamath, Salmon River, SF Trinity River - REDScott/Shasta Rivers, Mainstem Trinity, Trinity Tributaries - ORANGE

Learn more about fish health and KFHAT

Blue-Green Algae Map

BGA Tracker 20210721

BGA Tracker

Copco Reservoir and Iron Gate Reservoir are currently posted

Blue-Green Algae Tracker

Blue-Green Algae Tracker

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. Blue-green algae monitoring typically occurs May - November. If river conditions exceed public health standards for toxic algae the area is posted with a health advisory sign.

BGA Tracker 20210721

View the Klamath BGA Tracker Interactive Map

For more information, please check California's HAB Incident Reports Map


Updated Posting Status


CA DangerTier2 Red2 July 21, 2021- Copco Reservoir has been posted at the Danger level based on sample results collected on July 13th for microcystin.  

CA CautionActionTrigger Yellow2 June 29, 2021- Copco Reservoir and Iron Gate Reservoir have been posted at the Caution level due to microcystin  


About the Tracker

The BGA Tracker Map was built to inform the public and research community regarding river conditions. The Tracker utilizes current information to track  and map the blue-green algae blooms throughout the Klamath Basin. The Blue-Green Algae Tracker identifies blue-green algae public health threats  (i.e. exceeds health thresholds identified in the appropriate guidance) by river reaches bounded by public health monitoring locations.

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:                 



Yurok Tribe   Yurok Caution 1 Yurok Warning 2 Yurok Danger 3


Blue-green Algae Official Notifications

Other Information

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