The San Joaquin River, which helps
drain California’s Central Valley, has been negatively impacted
by construction of dams, inadequate streamflows and poor water
quality. Efforts are now underway to restore the river and
continue providing agricultural lands with vital irrigation,
among other water demands.
After an 18-year lawsuit to restore water flows to a 60-mile dry
stretch of river and to boost the dwindling salmon populations,
the San Joaquin River Restoration Settlement is underway.
Water releases are now used to restore the San Joaquin River and
to provide habitat for naturally-reproducing populations of
self-sustaining Chinook salmon and other fish in the San Joaquin
River. Long-term efforts also include measures to reduce or avoid
adverse water supply impacts from the restoration flows.
The Sacramento–San Joaquin Delta has more non-native species
than native ones, and its estuary is considered the most
invaded in the world. We talked to Jim Cloern—an emeritus
scientist with the US Geological Survey and an adjunct fellow
at the PPIC Water Policy Center—about this challenge.
Something is amiss on Sherman Island, a whale-shaped swath of
farm and grazing land at the confluence of the Sacramento and
San Joaquin rivers. If you don’t know what ails the place, it
might be hard to pinpoint the problem.
At the Association of California Water Agencies‘ spring
conference, a panel of lawyers covered the basics of the legal
framework for the Delta. The panel was billed as ‘All the
Acronyms You Need to Know”, but no 1.5 hour panel discussion
could possibly cover all that. However, the panel did a good
job of hitting the main ones and highlighting current issues.
In March, newly-elected Senator Melissa Hurtado (D-Sanger)
proposed a $400 million windfall to finance repairs for the
canal under Senate Bill 559… But the bipartisan bill, much
like canal it was designed to fix, is sunk — for now. The bill
failed to reach the Senate floor for a vote before the Sept. 13
The Friant-Kern Canal, which delivers water to farms and
communities on the east side of the Valley, is literally
sinking in some areas due to groundwater pumping. And with one
week to go before the California legislature wraps up its 2019
session, many hope the state will help fund the canal’s repair.
A 10-acre island in Isleton, an hour south of Sacramento in the
California Delta’s fresh-water Seven Mile Slough, is changing
hands for $1.195 million. (SF’s median condo price is about
$1.25 million.) The buyer is Thai Tran, who owns a mini-chain
of Vietnamese pho restaurants in Sacramento, and listing agent
Tony Wood of KW Commercial says Tran and his family plan to
transform the property into a destination.
As the old saying goes, if you can’t go through something, go
around it. And at an estimated cost of $357 million, the Friant
Water Authority is contemplating a 30-mile parallel canal to
circumvent the portion of the Friant Kern Canal that has been
negatively affected by subsidence.
The small channel island near Brannan Island can be found about
one hour south of Sacramento in the Delta’s fresh-water Seven
Mile Slough, in Sacramento County. The marina and resort have
been in operation for more than 60 years.
What Public Works Director Mark Houghton touts as “Manteca’s
own refinery” is now converting methane gas generated at the
wastewater treatment plant along with food waste to produce
compressed liquefied gas. And in doing so, Manteca is well on
its way to effectively wiping out all CO2 impacts the
wastewater treatment process creates and then some.
Friant Water Authority is conducting geotechnical
investigations this summer along the outer banks of the
Friant-Kern Canal in southern Tulare County to determine if the
soil may support construction of a second canal running
parallel to the first. The reason for the research is the
capacity of this key, eastside Valley canal has been reduced
60% due to land subsidence caused by years of vigorous
groundwater pumping …
Ariel Rubissow Okamoto, the editor in chief of Estuary Magazine
and long-time Bay Area science writer, talks about the
resiliency of the largest estuary on the West Coast, the
challenges facing the Sacramento–San Joaquin Delta, and the
potential impacts of climate change and sea-level rise on the
San Francisco Bay.
With the last drought in the rearview and the next one
inevitable, the damaging run on groundwater has state water
agencies and lawmakers mulling whether to spend hundreds of
millions to patch up a federally owned canal. But critics say
doing so would amount to a clear bailout for the state’s
Guests of Siren Island, a two-tiered wooden isle affixed with
four spindly maple tree branches, were relaxing in the
late-afternoon sun on the calm waters of the Sacramento-San
Joaquin River Delta. They took turns plunging their hands into
a steel basin of black lagoon mud then spreading it on one
another’s skin — limbs, torsos and faces.
The city of Stockton is working to fix a broken bubbling system
that has caused an overgrowth of harmful algae along the
Stockton waterfront. People who work near the deepwater channel
believe the green sludge is preventing others from playing on
California is overdue for a mega-storm capable of drowning
coastal areas in 20ft (6m) of water at any moment. Experts are
preparing contingencies for wet weather so extreme it might
tear open a 300-mile-wide ocean across the US West coast. …
The devastation of such flooding could match the severity of
“big San Andreas earthquakes”, according to the USGS.
The Sacramento-San Joaquin Delta is arguably the most
extensively studied and monitored ecosystem in the world. This
has generated mountains of data on everything from the
locations of the smallest fish to the water quality conditions
of the largest reservoir. Knowing where to access the most
up-to-date information can be a real challenge, but fortunately
several online dashboards can help
Just how much Manteca’s treated wastewater is worth to
agricultural users served by the Delta Mendota Canal that are
often at the mercy of fish flows diversions and drought that
reduces their Central Valley Project allocations may be
determined in the coming year.
The city of Stockton’s underwater bubbler system designed to
prevent algal blooms hasn’t been working for a little more than
a month. … The aeration system, which was installed in 2006,
pumps oxygen into the water to prevent stagnation. Stagnant
water, combined with hot temperatures, can lead to the growth
The Friant Water Authority is confident a parallel canal is the
best solution. This new one will be built in a way that
prepares for subsidence. A new canal would also benefit from
the Ground Water Management Act of 2014, which will regulate
how much and when water is pumped out of the ground, preventing
what some believe is the main cause of subsidence.