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

Blue-Green Algae Map

BGA Tracker 20180702

BGA Tracker-

Upper Klamath Lake and Iron Gate Reservoir are currently posted

Fish Health

 Readiness Level

 KlamathFishIcon yellow

All Rivers- Yellow
Learn more about fish health and KFHAT

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 Interactive Map    

 BGA Tracker 20180702

Updated Posting Status

July 2, 2018- Iron Gate Reservoir is currently posted based on monitoring results from June 25th showing cell counts of Microcystis aeruginosa in exceedance of CA's Caution Action Trigger level.

June 15, 2018- Upper Klamath Lake is currently posted for a health advisory based on monitoring results confirming microcystin toxins.


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     


Blue-green Algae Official Notifications

Other Information


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