A member of our community had a dog become ill with symptoms similar to toxins from blue-green algae (also known as cyanobacteria). The actual cause of the illness was not verified. The State HAB (hazardous algae bloom) website operated by the State Water Resources Control Board was notified and it has been posted as a possible canine illness. The State toxicologist contacted our local resident and obtained more detailed information.
Our local Health Department was also contacted. They came out immediately to Patterson Point and observed possible blue-green algae. Samples were taken but it was determined that it was not blue-green algae that they observed. The Health Department maintains a blue-green algae toxin testing device at Monte Rio beach which is representative of 10 miles of the river. This has also come back as non-detect for toxins. Sonoma Water also does weekly bacteriological testing at Patterson Point. If they observe potential blue-green algae when they are obtaining samples, they will take a sample of the algae back to their lab for examination.
In summary, there have not been toxins detected in the water so far (they were detected last year). There is still a potential for exposure to toxins, however, from contact with algae mats. Blue-green algae is difficult to identify and can co-exist with the typical green algae clumps. Exposure to blue-green algae is a particular hazard to dogs because if they lick their fur, the cell walls of the algae can break and release toxins.
The large warning sign on Third Street has detailed instructions on how to mitigate potential hazard from blue-green algae. Everyone should read this and follow the guidance in order to protect their children and dogs. Learn more about HABs, reporting, and current levels at the Sonoma County Department of Environmental Health.
