Western Water has provided
in-depth coverage of critical water issues facing California and
the West since 1977, first as a printed magazine and now as an
online newsroom. Articles explore the science, policy and
debates centered around drought, groundwater,
sustainability, water access and affordability, climate change
and endangered species involving key sources of supply such as
the Colorado River, the Sacramento-San Joaquin Delta, and more.
Western Water news is produced by a team of veteran
journalists and others at the Water Education Foundation:
Before the construction of Hoover Dam on the lower Colorado River, as well as a slew of smaller sisters downstream, the stretch downriver served as a biological oasis in the middle of the unrelenting Mojave and Sonoran deserts. The marshes and backwaters along the river’s edge provided sheltered areas for fish to spawn and rear their young, and mesquite and cottonwood-willow forests provided important habitat for numerous species of birds and other animals.
A new aquatic invader, the golden mussel, has penetrated California’s ecologically fragile Sacramento-San Joaquin Delta, the West Coast’s largest tidal estuary and the hub of the state’s vast water export system. While state officials say they’re working to keep this latest invasive species in check, they concede it may be a nearly impossible task: The golden mussel is in the Golden State to stay – and it is likely to spread.
The Shoshone Power Plant is worth
more dead than alive.
The small, early 1900s powerhouse on the Colorado River in
western Colorado is on its last legs, crippled by chronic
mechanical problems, wildfires, floods and rockslides.
But this faltering facility just east of Glenwood Springs holds
something of immense value in the parched West: senior rights to
an estimated 845,000 acre-feet of Colorado River water a year.
Nobody had leverage and everybody
had something to gain.
Negotiators for the Jicarilla Apache Nation, the state of New
Mexico and The Nature Conservancy worked together remotely for
two years during the COVID-19 pandemic on an unprecedented pact
that would keep 200,000 acre-feet of water in the Colorado River.
Matt Hurley isn’t one to gloss over what he doesn’t know about California water.
The Fresno-area attorney has served as general manager, executive officer, consultant or a board member for at least a dozen agricultural water districts and local resource conservation agencies across the San Joaquin Valley.
What’s more, he was on an advisory committee that helped draft one of the most consequential pieces of water legislation in California history: The Sustainable Groundwater Management Act of 2014, commonly referred to as SGMA, that for the first time regulated a much-overdrawn resource critical to the state’s economy and the livelihoods of its residents.
An intensifying but unseen force is
stealing precious water from rivers in the arid West, but it’s
hardly a thief in the night.
The midday sun is one of the more aggressive guzzlers of the
Colorado River. Between its high Rockies headwaters and its
Sonoran Desert delta, 1 to 2 million acre-feet of water
evaporates each year in the Colorado River Basin. That’s a big
gulp in a watershed where seven thirsty U.S. states and northern
Mexico skirmish for their share of an overallocated, shrinking
water supply. And the evaporation will only increase as the
Southwest grows hotter and drier.
Of California’s many tough water
challenges, few are more intractable than regulating how much
water must be kept in rivers and streams to protect the
environment.
Attempts to require enough water at the right time
and temperature to sustain fish and other aquatic life run
smack against a water rights system developed more than 150 years
ago for farmers, miners, industries and cities – but not
wildlife.
When residents of the Yuba River
watershed northeast of Sacramento saw a stretch of the
emerald-green river suddenly turn an alarming reddish-brown on a
recent winter day, they knew immediately who to call.
Though water quality concerns are the purview of federal, state
and county environmental agencies, they alerted the local South
Yuba River Citizens League, confident its volunteers could get to
the scene quicker and investigate the discoloration faster than
any regulator.
For a state that prides itself on
technological innovation, California is surprisingly antiquated
when it comes to accessing fundamental facts about its most
critical natural resource – water.
Most anywhere else in the West, basic water rights information
such as who is using how much water, for what purpose, when, and
where can be pulled up on a laptop or smartphone.
After more than two decades of
drought, water utilities serving the largest urban regions in the
arid Southwest are embracing a drought-proof source of drinking
water long considered a supply of last resort: purified sewage.
Water supplies have tightened to the point that Phoenix and the
water supplier for 19 million Southern California residents are
racing to adopt an expensive technology called “direct potable
reuse” or “advanced purification” to reduce their reliance on
imported water from the dwindling Colorado River.
The climate-driven shrinking of the
Colorado River is expanding the influence of Native American
tribes over how the river’s flows are divided among cities, farms
and reservations across the Southwest.
The tribes are seeing the value of their largely unused river
water entitlements rise as the Colorado dwindles, and they are
gaining seats they’ve never had at the water bargaining table as
government agencies try to redress a legacy of exclusion.
A new but little-known change in
California law designating aquifers as “natural infrastructure”
promises to unleash a flood of public funding for projects that
increase the state’s supply of groundwater.
The change is buried in a sweeping state budget-related law,
enacted in July, that also makes it easier for property owners
and water managers to divert floodwater for storage underground.
The Klamath River Basin was once one
of the world’s most ecologically magnificent regions, a watershed
teeming with salmon, migratory birds and wildlife that thrived
alongside Native American communities. The river flowed rapidly
from its headwaters in southern Oregon’s high deserts into Upper
Klamath Lake, collected snowmelt along a narrow gorge through the
Cascades, then raced downhill to the California coast in a misty,
redwood-lined finish.
A new underground mapping technology
that reveals the best spots for storing surplus water in
California’s Central Valley is providing a big boost to the
state’s most groundwater-dependent communities.
The maps provided by the California Department of Water Resources
for the first time pinpoint paleo valleys and similar prime
underground storage zones traditionally found with some guesswork
by drilling exploratory wells and other more time-consuming
manual methods. The new maps are drawn from data on the
composition of underlying rock and soil gathered by low-flying
helicopters towing giant magnets.
The unique peeks below ground are saving water agencies’
resources and allowing them to accurately devise ways to capture
water from extreme storms and soak or inject the surplus
underground for use during the next drought.
“Understanding where you’re putting and taking water from really
helps, versus trying to make multimillion-dollar decisions based
on a thumb and which way the wind is blowing,” said Aaron Fukuda,
general manager of the Tulare Irrigation District, an early
adopter of the airborne electromagnetic or
AEM technology in California.
The states of the Lower Colorado
River Basin have traditionally played an oversized role in
tapping the lifeline that supplies 40 million people in the West.
California, Nevada and Arizona were quicker to build major canals
and dams and negotiated a landmark deal that requires the Upper
Basin to send predictable flows through the Grand Canyon, even
during dry years.
But with the federal government threatening unprecedented water
cuts amid decades of drought and declining reservoirs, the Upper
Basin states of Wyoming, Utah, Colorado and New Mexico are
muscling up to protect their shares of an overallocated river
whose average flows in the Upper Basin have already dropped
20 percent over the last century.
They have formed new agencies to better monitor their interests,
moved influential Colorado River veterans into top negotiating
posts and improved their relationships with Native American
tribes that also hold substantial claims to the river.
Tiny pieces of plastic waste shed
from food wrappers, grocery bags, clothing, cigarette butts,
tires and paint are invading the environment and every facet of
daily life. Researchers know the plastic particles have even made
it into municipal water supplies, but very little data exists
about the scope of microplastic contamination in drinking
water.
After years of planning, California this year is embarking on a
first-of-its-kind data-gathering mission to illuminate how
prevalent microplastics are in the state’s largest drinking water
sources and help regulators determine whether they are a public
health threat.
It was exactly the sort of deluge
California groundwater agencies have been counting on to
replenish their overworked aquifers.
The start of 2023 brought a parade of torrential Pacific storms
to bone dry California. Snow piled up across the Sierra Nevada at
a near-record pace while runoff from the foothills gushed into
the Central Valley, swelling rivers over their banks and filling
seasonal creeks for the first time in half a decade.
Suddenly, water managers and farmers toiling in one of the
state’s most groundwater-depleted regions had an opportunity to
capture stormwater and bank it underground. Enterprising agencies
diverted water from rushing rivers and creeks into manmade
recharge basins or intentionally flooded orchards and farmland.
Others snagged temporary permits from the state to pull from
streams they ordinarily couldn’t touch.
Growing up in the shadow of the
Rocky Mountains, Andrew Schwartz never missed an opportunity to
play in – or study – a Colorado snowstorm. During major
blizzards, he would traipse out into the icy wind and heavy
drifts of snow pretending to be a scientist researching in
Antarctica.
Decades later, still armed with an obsession for extreme weather,
Schwartz has landed in one of the snowiest places in the West,
leading a research lab whose mission is to give California water
managers instant information on the depth and quality of snow
draping the slopes of the Sierra Nevada.
When the Colorado River Compact was
signed 100 years ago, the negotiators for seven Western states
bet that the river they were dividing would have ample water to
meet everyone’s needs – even those not seated around the table.
A century later, it’s clear the water they bet on is not there.
More than two decades of drought, lake evaporation and overuse of
water have nearly drained the river’s two anchor reservoirs, Lake
Powell on the Arizona-Utah border and Lake Mead near Las Vegas.
Climate change is rendering the basin drier, shrinking spring
runoff that’s vital for river flows, farms, tribes and cities
across the basin – and essential for refilling reservoirs.
The states that endorsed the Colorado River Compact in 1922 – and
the tribes and nation of Mexico that were excluded from the table
– are now straining to find, and perhaps more importantly accept,
solutions on a river that may offer just half of the water that
the Compact assumed would be available. And not only are
solutions not coming easily, the relationships essential for
compromise are getting more frayed.
The foundation of California’s water
supply and the catalyst for the state’s 20th century
population and economic growth is cracking. More exactly, it’s
disappearing.
Climate change is eroding the mountain snowpack that has
traditionally melted in the spring and summer to fill rivers and
reservoirs across the West. Now, less precipitation is falling as
snow in parts of major mountain ranges like California’s Sierra
Nevada and the Rockies in the West, and the snow that does land
is melting faster and earlier due to warming temperatures.
