Dangerous and sometimes fatal cyanobacteria present in Navarro River


5 thoughts on “Dangerous and sometimes fatal cyanobacteria present in Navarro River

  1. Thanks for writing about this shameful environmental situation on the Navarro River. WHY doesn’t the article state clearly that the “water pollution from sources such as wastewater treatment plants, contaminated stormwater, runoff, and more” is from the vineyard runoff of fertilizers and pesticides???? Why does our county government and press cover up what the overabundance of vineyards in Anderson Valley has done to the Navarro? That, plus climate change and the drought (less water to break through the sandbar), have all contributed to this disaster. We can’t make it rain or cool down but we can regulate the vine industry and should do that NOW!!!!

  2. While it is possible that the scummy bloom is related to vineyards in Anderson Valley, that is a matter of conjecture. I’m not aware of any scientific studies or forensic investigations that support the idea.

    Some suggest dredging the Navarro River would solve the problem, but dredging has never been done on the Navarro. We don’t know that it would solve the problem, and a dredging project there would cost tens of millions. Federal funding for such dredging is allocated by economic need, such as to improve harbors and navigation, neither of which apply to the Navarro.

    As the article points out, cyanobacteria blooms are common this time of year and are not unique to the Navarro. So let’s not jump to conclusions based on assumptions and conjectures.

    • There are many scholarly articles and studies devoted to fertilizer runoff and Cyanobacteria. Do AV vineyards use the same type of fertilizers studied? Not sure…but to dismiss this concern as conjecture is inaccurate.

  3. In any case, we should expect more in-depth reporting from our local newspaper on this recurring problem (including the annual algae blooms more generally) and the conceivable (if not already documented) causal link with up-river agricultural practices.

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