In the News

Eyasco's monitoring services play an important role in local, regional, national and global environments. We will be posting news articles and events to highlight how we work with our partners and customers to gather information and protect your earth, your air and your water... 

California State Water Board settles lawsuit with environmental groups – great news for water, fish, and all Californians!

July 22, 2020
By Dan Bacher

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Three California environmental nonprofits secured a landmark settlement agreement with the California State Water Resources Control Board to uphold the common law Public Trust Doctrine and other legal protections for imperiled fish species in the Sacramento River and San Francisco Bay/Sacramento – San Joaquin Delta Estuary, according to a press release from the groups.

“The lawsuit, filed in 2015 by the California Sportfishing Protection Alliance (“CSPA”), the California Water Impact Network(“CWIN”), and AquAlliance, brought sweeping claims against the State Water Board.  It alleged that the agency’s management of the Sacramento River and San Francisco Bay-Delta displayed an overarching pattern and practice of:

    •    Failure to comply with the Public Trust Doctrine
    •    Failure to implement Sacramento River temperature management requirements
    •    Failure to ensure that fish below dams be maintained in “good condition” and
    •    Acceptance of water quality below minimum Clean Water Act standards.

“The Water Board’s long-standing pattern and practice of inadequately implementing foundational environmental laws has brought the Central Valley aquatic ecosystem to the brink of collapse.  This settlement agreement is a major step forward, compelling the State Water Board to fulfill crucial legal requirements it had previously ignored,” said Bill Jennings, CSPA Executive Director. Read full article

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Eyasco, Inc. designs and deploys monitoring systems to gather and supply reliable water data for water quality managers. Water temperature, flow, turbidity, levels and a host of parameters are gathered from sensors and transmitted in real-time. The data is then converted into easy-to-read, charts, graphs and analytical info that water managers can view, either from a desktop computer, or from a mobile device.

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Fixing Anderson Dam is a priority for Valley Water

Valley Water, Santa Clara County, Morgan Hill, CA

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Anderson Reservoir on the Calaveras fault line.  Photo Credit

Seismic Concerns and Aging Dam at Anderson Reservoir

Anderson Reservoir is currently limited to about 58% of its capacity due to seismic concerns costing Santa Clara County valuable drinking water resources. This project covers earthquake retrofitting of Anderson Dam to improve reliability and safety, and returns the reservoir to its original storage capacity.

Anderson Dam creates the county’s largest surface water reservoir—Anderson Reservoir— which stores local rainfall runoff and imported water from the Central Valley Project. The reservoir is an important water source for treatment plants and the recharge of the groundwater basin. Besides restoring drinking water supplies, the upgrade also supports compliance with environmental regulations. Valley Water’s regular reservoir releases ensure that downstream habitat has healthy flows and temperatures to sustain wildlife.

A breach of Anderson Dam at full capacity could have catastrophic consequences, including inundation of surrounding land more than 30 miles northwest to San Francisco Bay, and more than 40 miles southeast to Monterey Bay. Read Full Article


Climate change: US megadrought 'already under way'

By Matt McGrath Environment correspondent

BBC | Science and Environment 

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Lake Mead saw huge drop in water levels during the recent drought.


Researchers say the megadrought is a naturally occurring event that started in the year 2000 and is still ongoing.

Climate change, though, is having a major impact with rising temperatures making the drought more severe.

Some researchers are more cautious, saying that it is too early to say if the region really is seeing a true megadrought. 

How do researchers know what drought conditions were like in the past?

The key to this new study is the use of tree ring records to reconstruct soil moisture data for the past 1200 years.

The team were also able to use supporting evidence such as medieval tree stumps growing in normally wet river beds, the abandonment of settlements by indigenous civilisations at the peak of the 13th century drought, plus evidence from lake deposits indicating wildfire activity was enhanced during these drought periods.

What did the study find?

The researchers discovered that when they compared the worst 19-year drought events in the past to soil moisture records from 2000-2018, the current period is already worse than three of the four megadroughts recorded.

The fourth one, which ran from 1575 to 1603 was likely the worst one of all, but the difference with the present event is slight. 

"The first two decades of this drought look just like the first two decades of all of the mega droughts," said lead author Dr Park Williams, from Columbia University in New York.

"In fact, it is essentially tied with the worst two decades of the worst of the mega droughts."

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