A collection of top water news from around California and the West compiled each weekday. Send any comments or article submissions to Foundation News & Publications Director Chris Bowman.
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New California legislation seeks to permanently ban paraquat, a
powerful and widely used weedkiller that has been linked to
Parkinson’s disease and other serious health issues. Assembly
Bill 1963, introduced recently by Assemblymember Laura Friedman
(D-Glendale), would sunset the use of paraquat beginning in
January 2026. The herbicide, which is described by the U.S.
Environmental Protection Agency as highly toxic, is regularly
sprayed on almonds, grapes, cotton and other crops in the
state. … California is the nation’s top user of paraquat
…
The Navajos live in the same 1,400-mile-long Colorado River
Basin that brings fresh water to millions in Southern
California, yet about 30% of homes on the reservation were
built without indoor plumbing. With the absence of pipes
connecting homes in this isolated corner of the reservation to
a water source, many Navajos must spend hours each week driving
to a community center in the tribal settlement of Dennehotso to
refill portable tanks. … Some see hope in a
proposed landmark agreement that would settle all
outstanding water rights disputes between the Navajo, Hopi and
San Juan Southern Paiute tribes and the state of Arizona. If
the final terms of the agreement are approved by the tribal
government, the Navajos will ask Congress for $5 billion in
federal funding to expand the reservation’s water delivery
infrastructure.
Arizona House Republicans convened in a newly created committee
Thursday afternoon to discuss an investigation into the state’s
Democrat attorney general. The conservative lawmakers announced
the creation of the House Committee on Executive Oversight
Wednesday in response to Attorney General Kris Mayes’ ongoing
investigations into “megafarms” she says are overusing
groundwater and draining the wells of rural Arizonans. …
Mayes has recently indicated in multiple town halls across
rural Arizona, specifically La Paz County, her intent to file a
public nuisance complaint against large industrial farms and
corporations that she says are sucking rural Arizonans dry.
Nearly half of US prisons draw water from sources likely
contaminated with toxic PFAS “forever chemicals”, new research
finds. At least around 1m people incarcerated in the US,
including 13,000 juveniles, are estimated to be housed in the
prisons, and they are especially vulnerable to the dangerous
chemicals because there is little they can do to protect
themselves, said Nicholas Shapiro, a study co-author at the
University of California in Los Angeles.
After years of heated debates and delays, the world’s largest
dam removal is currently underway on the Klamath River across
the California-Oregon border. … removing structures of
this size come with negative side effects—from droves of dead
fish to muddy waters. As a result, critics have recently spoken
out against the project, deeming it an “environmental
disaster.” But scientists say that they expected many of these
short-term impacts before the effort began and they will soon
fade. For today’s newsletter, I decided to dig into the science
behind dam removal, and how the rocky start to the Klamath
River project could yield a healthier river system overall.
A bill that would allow graywater systems to be included in new
homes throughout Colorado received rare unanimous approval from
the Colorado House on Friday. Graywater is made up of water
that has been used a single time from appliances like laundry
machines, baths or sinks and can be used again for non-drinking
purposes like toilet flushes and irrigation. Conservationists
point to graywater uses as a way to cut down on water
consumption as the drought in the West has deepened in recent
years.
Hydropower generated for electricity from Oregon and Washington
dams fell to historically low levels last year, and experts
expect it could drop further by year’s end. Officials at the
U.S. Energy Information Administration recently published data
showing that hydropower generation in the Northwest between
Oct. 1, 2022 and Sept. 30, 2023 dropped to a 22-year
low. … Across the West, hydropower generation in
2022 and 2023 was down 11% from 2021, according to the data.
California was an outlier, doubling the amount of hydropower
generated due to record rainfall and snowpack.
… [C]occidioides, a fungus that causes a disease called
coccidioidomycosis, better known as valley fever. If inhaled,
microscopic spores from the fungus can lodge in the lungs.
About a third of those infected with cocci never have any
symptoms, and most of those infected clear the disease and
develop immunity. But for between 1 and 5% of those who inhale
it, cocci spreads through the bloodstream and wreaks havoc in
the body that can sometimes be lethal. And the changing climate
has allowed valley fever to spread far beyond its traditional
territory of Arizona and parts of Southern California.
The Marin Municipal Water District has adopted its strategic
work plan as it strives to reduce potable water use and
increase supply. The work plan, approved unanimously at
Tuesday’s board meeting, outlines the steps needed to implement
the five-year strategic plan the district adopted in February.
The strategic plan includes targets for water supply, drought
resiliency, land stewardship and fiscal responsibility.
After 12 years of planning, gathering funding then completing
and re-doing – and re-doing again – environmental studies, the
City of Bakersfield has finally gone out to bid for the
northern extension of the Kern River Parkway Trail. “I’m very
excited, it’s been a long time coming,” Councilman Bob Smith
said of the 6-mile long addition to the nearly 40-mile-long
path that runs the length of the Kern River from Gordon’s Ferry
on the east all the way to the Buena Vista Lake Aquatic
Recreation Area on the west. This extension will take runners,
hikers and cyclists north at Coffee Road along the Friant-Kern
Canal up to 7th Standard Road, about a half mile west of the
Gossamer Grove development.
… To broaden your understanding of how the Colorado River
crisis and groundwater depletion are affecting Nevada, here are
a few books to snag for your shelf: “Cadillac Desert” by
Marc Reisner … “Where the Water Goes” by David Owen
… “Water Follies” by Robert Glennon … “All the
Water the Law Allows” by Christian S. Harrison
The USDA Forest Service Lake Tahoe Basin Management Unit
(LTBMU) released the final environmental review documents and
draft decision for the Meeks Bay Restoration Project. The
LTBMU, in conjunction with Tahoe Regional Planning Agency, and
Lahontan Regional Water Quality Control Board, is developing a
plan to restore Meeks Creek to a more natural condition, while
continuing to support sustainable recreation
opportunities. In 1960, a marina with approximately
120 boat slips and a boat launch facility was dredged at the
mouth of Meeks Creek, on the West Shore of Lake Tahoe. The
marina eliminated a unique wetland habitat for numerous bird,
mammal, and amphibian species.
… This marked the second year in a row with above-average
snowfall and was a huge turnaround from conditions at the
beginning of 2024, when the snowpack across the state was
barely a quarter of the historic average. … The
relationship between snowfall and climate change is not as
simple as it might first appear. Though rising temperatures
will cause some would-be snow to fall as rain, this is partly
balanced out by the fact that precipitation will become more
intense overall, since warmer air can hold more water vapor.
Some parts of Alaska and Northern Canada have
seen increases in snowfall over the last 40 years; in
these frigid locales the amount of snow is more limited by cold
weather, which decreases the amount of moisture in the air. -Written by Ned Kleiner, a scientist and catastrophe
modeler at Verisk.
Microplastics are tiny, nearly indestructible fragments shed
from everyday plastic products. As we learn more about
microplastics, the news keeps getting worse. Already
well-documented in our oceans and soil, we’re now discovering
them in the unlikeliest of places: our arteries, lungs, and
even placentas. Microplastics can take anywhere from 100 to
1,000 years to break down and, in the meantime, our planet and
bodies are becoming more polluted with these materials every
day. Finding viable alternatives to traditional
petroleum-based plastics and microplastics has never been more
important. New research from scientists at the University of
California San Diego and materials science company Algenesis
shows that their plant-based polymers biodegrade — even at the
microplastic level — in under seven months.
Canals in California may soon feature a new look — solar panel
canopies, designed to stop evaporation and soak up the sun’s
rays, created under a new project funded with help from the
federal government to boost green energy
infrastructure. Governor Gavin Newsom joined staff from
the U.S. Bureau of Reclamation on Thursday to highlight a new
“solar-over-canal” project along one of the state’s primary
aqueducts. The pilot project proposes placing a solar canopy to
“float” over a major waterway as a source of renewable energy
that can also prevent loss of precious water through
evaporation. Adam Nickels, Deputy Regional Director at the
Bureau of Reclamation, said that the Biden Inflation Reduction
Act helped make it possible to pick a portion of the
Delta-Mendota Canal for placement of a solar panel in Merced
County.
California was thrown back into winter on Thursday with a
cold storm diving into the northern part of the state and
delivering low-elevation snow to places that
infrequently see snow in winter, let alone April. The storm
system originated in the Gulf of Alaska and ushered a polar air
mass into the region, pushing down temperatures to below normal
levels for this time of year. The system is expected to impact
Southern California Thursday night into Friday. … The
storm was also impacting the Sierra Nevada. The weather
service’s Sacramento office said it had received
reports of snowfall at elevations as low as 1,800 feet on the
western side of the northern Sierra
A first-of-its-kind report has estimated that Los Angeles
County must invest billions of dollars through 2040 to protect
residents from worsening climate hazards, including extreme
heat, increasing precipitation, worsening wildfires, rising sea
levels and climate-induced public health threats. The report,
published this week by the nonprofit Center for Climate
Integrity, identified 14 different climate adaptation measures
that authors calculated would cost L.A. taxpayers at least
$12.5 billion over the next 15 years. … To mitigate
these impacts, the county must expand its stormwater drainage
infrastructure by installing bioswales, porous pavement and
other opportunities for stormwater to seep into the ground, the
report found.
Last month, the seven U.S. states that use Colorado River water
released two divergent plans for how that water should be
managed after 2026 when the current agreement expires. Their
proposals centered on operations at Lake Powell and Lake Mead,
the country’s two largest reservoirs, the levels of which are
instrumental in determining how much water each state gets. But
a coalition of environmental organizations felt that those
plans — and the discourse surrounding which states should have
to cut their water use — drowned out a crucial consideration:
the environment. So, last week, they submitted a plan of their
own. “Our plan explicitly integrates environmental values and
resources into the planning, while also trying to meet the
needs of people,” Taylor Hawes, the Colorado River Program
director for The Nature Conservancy, said.
In late March the Siskiyou County Board of Supervisors
proclaimed a local emergency related to concerns about heavy
metals like arsenic and lead being present in the Klamath
River. It was prompted by the ongoing removal of four
hydroelectric dams on the river. … Matt St. John, an
environmental program manager with the North Coast Regional
Water Quality Control Board, said it was expected that you’d
also have high metals concentrations. “Those metals
concentrations are not a threat to public health. It’s okay to
touch the water with those type of concentrations. And no water
in the state of California should be drunk without any without
treatment. And so, the Klamath River isn’t a source of drinking
water without treatment of that water.”
… So what kind of fire season are we in for this year? Like
2023, this year has been a wet one. … After the wet
winter, vegetation in the state isn’t as parched as it would be
during a drought, so wildfire activity is likely to be pretty
low in the spring and early summer, Daniel Swain, a climate
scientist at the University of California, Los Angeles, said in
an online briefing this week. … But the year probably
won’t stay as quiet as 2023 was. This year’s wet weather hasn’t
been as extreme as last year’s — some inland cities, like
Fresno and South Lake Tahoe, actually received less rain
than usual this year — so plants and soil are more likely
to dry out over the rest of this year than they were last year.
“I would be somewhat surprised if this year was not
significantly more active,” Swain said.