Dear Editor, 

Last week I posted pictures of the woeful, sad, algae-infested Navarro River. This year the algae exploded during our first very hot heatwave at the beginning of July. The water is low, ugly and unhealthy. Three summers ago, during the drought, the river ran clear until the rains. I know some algae is expected. But the last two years of recreation time in the river has been cut by more than half. After incredibly wet winters the last two years, our river is in worse shape than ever before. I showed the community these pictures and questioned whether there was excessive nitrogen and phosphorous runoff from the three million vines planted in our small valley. Don’t we all have a right to the water in our community? A vigorous discussion followed. 

After posting pictures regarding my deep concern for the state of our river, I invited discussion by the community here in Anderson Valley. I have learned a lot over the last week about surface water flow, algae, water rights, permits for wells, agricultural runoff, old septic systems, fish-friendly farming and climate change. 

On Friday [an official from] the Northcoast Regional Water Quality Control Board came to take samples of the algae growth to determine if bacteria are present. [He] stated that the cause of excessive algae growth in the state is unknown, but that low water level and record heat is a huge factor. When asked if an old septic or excessive runoff from fertilizers could be the cause for certain areas of the river, he said it could not be ruled out. If the river was tested now for high nitrogen, it would read a low level because the algae eat the nitrogen (fixates). I also learned that I myself could test the water in spring and send it to a lab. But for now, even if the water tests positive for bacteria, it will simply be marked on a map and a warning posted. No further investigation into causes will be conducted. 

Algae in the Navarro River near Philo, Calif. on August 7, 2024. (Lisa Nunes via The Mendocino Voice)

I still can’t help but be astounded that there are three million vines in the 15-mile stretch of Anderson Valley. They need water for at least the second half of summer, according to a local vintner. Let that sink in………. 

So, what are water rights? The legal right of a user to use water from a specific source. Water rights authorize particular entities to use, sell or divert water. From landowners to corporations. According to comments online, some (maybe four) are grandfathered in and draw from the river 24 hours a day. Others have commented that they are required to draw from the river from May to September or else they are heavily fined. What the … ? Who in God’s name created these rules? Can we the public demand an explanation from our elected officials? Create a petition? When does a person’s or entity’s limits kick in for these grandfathered rights. Are they allowed to keep sucking it out till it’s gone? Does water not belong to all of us? Are we allowed to ask? Hmmm. 

Those questions probably won’t go over well with some. 

Others have commented how some landowners with holding ponds replenish them illegally with groundwater. I would hope that there would be some sort of safeguard against that. I also have a lot of faith that these things are monitored by our local authorities who care. Misplaced trust? 

The permit process for wells includes a final decision by local government who reviews the application for potentially significant environmental impacts. Who is that in Mendocino County? The Environmental Health Department of Mendocino County. Are they willing to share their findings and reasoning with us? There is no limit on what is drawn out of a well? Not sure. But a new state policy for restricting well water use for large consumers in sensitive areas may go into effect. Cross your fingers it happens, and we are one of those areas. 

Algae in the Navarro River near Philo, Calif. on August 7, 2024. (Lisa Nunes via The Mendocino Voice)

On the AgAlert website is an article (8/2/2023) regarding the Northcoast Regional Water Quality Control Board working on creating new monitoring and reporting requirements for nitrogen applications and removals in Anderson Valley. “The North Coast is the last of the state’s nine regions to develop general waste discharge requirements as part of the state’s Irrigated Lands Regulatory Program.” Oh boy! So much for the Northcoast water board thinking that runoff is not part of the problem with the river, this new requirement would say otherwise. 

I also found that we as a community can be active in protecting our resources through different agencies: The Mendocino County Resource Conservation District. Facebook pages, Mendocino County 5th District community page, and on Valley Hub. There is the USDA Natural Resources Conservation Service. Fish Friendly Farming is actively educating about problems such as erosion and soil loss, stream bank failure, and water quality degradation. Commenters have talked about dry farming. 

In conclusion, I am sure I got some things wrong and have lots more to learn. But the actions that I see available to me are: 

Bring awareness 

Join in efforts of my Local and Federal Conservation Agencies 

I can test the water next spring 

I can walk the river with my camera 

Learn more 

Start a petition? To demand the environmental studies that showed having so many vineyards in a small area was environmentally sound? 

Anyone want to take a swim in the Napa River? 

Sincerely yours,  

Lisa Nunes 
Philo  

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7 Comments

  1. Since when is it illegal to replenish surface water with wells?
    It is allowed by the water board. We’ve been doing it for years now & we report the amount pumped from the wells into our ponds. That is the only requirement.

  2. In the late 1990s, Wendy Read and other concerned denizens of Anderson Valley formed and Action coalition to inform the county and it’s citizens of such outcomes. There was an aggressive effort to warn against the predictable problems that would develop if county officials did not adopt more stringent regulations for the booming influx of big ag monoculture to guard against the environmental impact it would have. Those county officials refused to take any such action.

  3. The Mendocino County Water Agency is governed by the Board Of Supervisors. Why does the Ukiah Valley Basin have a groundwater sustainability agency and we do not? I call on the supervisors to provide us with water resource information on the Anderson Valley water basin!
    Per the website for the county of Mendocino:

    The Mendocino County Water Agency (Water Agency) is a special district that encompasses all of Mendocino County and is governed by the Board of Supervisors sitting as the Board of Directors. The Water Agency is administered by the Department of Transportation. The Agency’s roles include:

    The National Pollution Discharge Elimination System (NPDES) – municipal separate storm sewer
    system (MS4) Phase II permit, for the control of storm water runoff.
    The California State Groundwater Elevation Monitoring program (CASGEM) – statewide effort to track seasonal and long-term trends in groundwater elevations.
    Represent the County in the implementation of the Sustainable Groundwater Management Act by being a member of the Ukiah Valley Basin Groundwater Sustainability Agency and collaboratively develop a Groundwater Sustainability Plan for the Ukiah Basin.
    Providing the public with information regarding water resources in Mendocino County, actively
    communicate with federal, state, and local water agencies with regards to water related legislation and policy.
    More information on the Water Agency is available in the Water

  4. Wow, it looks like something has changed. It would be interesting to look at some hydrologic data to see how river flows may have changed over time. I think there is a stream gage below Hendy woods.

  5. Not trying do be a pip, but i must ponder if the occasional clogged outlet of this river is partially the culprit here? I could be way off?

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