Located on the west side of the San Joaquin Valley in the Coast
Range foothills, San Luis Dam and Reservoir are used by the state
and federal governments to store water diverted from the Delta.
It is the largest offstream reservoir in the United States.
The San Luis Reservoir is a key water facility serving both the
State Water Project and the federal Central Valley Project. It
can hold 2 million acre-feet of water and is jointly owned by the
federal Bureau of Reclamation and California’s Department of
Water Resources. The state’s share of the San Luis
Reservoir water is 55 percent.
The California drought has been brutal over the past few years,
but to see just how devastating it has been, you need to see
before-and-after pictures side by side. Bay Area News Group
photojournalist Nhat V. Meyer went out to the San Luis
Reservoir in Merced County this week and took pictures in
approximately the same places that he did in January 2019. The
reservoir is one of the largest in California. The results are
startling. It shows how California’s reservoir water levels are
way below what they should be at this time of year.
Dangerously low water levels at Shasta Lake were captured on
drone video by ABC10 reporter John Bartell and photojournalist
Tyler Horst on Tuesday. Shasta Lake is California’s
largest reservoir, capable of holding 4,552,000 acre feet of
water. Right now, it has 1,186,057 acre feet of water stored.
Breaking that down into percentages, the reservoir is at 26%
capacity and 42% of average for this date.
A bloom of toxic blue-green algae in a Central California
reservoir has reached the danger level, the state Department of
Water Resource said Tuesday. Lab results from this week’s
tests showed an increase in toxin levels at San Luis Reservoir
in Merced County, the department said. Boating is allowed
but people and pets should avoid physical contact with the
water and algal scum. Fish and shellfish from the lake should
also be avoided.
Does time travel exist? Probably not, but let’s take a shot.
The California drought may give us a unique chance to go back
to 1955. That’s when the Folsom Dam was built, during they
heydays of dam building from the 1950s to the ’70s. California,
along with the rest of the United States, experienced major
population growth with the “Baby Boomer” era following World
War II. Agencies seeking to meet water demands constructed most
of the major dams in California including Oroville, Don Pedro,
San Luis, and Trinity Dams — all of which are over 2 million
acre-feet. -Written by Tom Frazier, a Merced writer, columnist,
photographer and supporter of the arts.
California’s fifth largest reservoir — San Luis — is now at 16
percent of capacity. The nation’s largest off-stream reservoir
with the ability to hold 2,041,000 million acre feet exists to
divert excess winter and spring river flows headed for the
Pacific Ocean. As such it underscores the fact the entire
Central Valley, the southern Sierra, the North Bay, and the
East Bay are in exceptional drought — the worst designation of
the United States Department of Agriculture drought monitor.
Historically on Aug. 16 San Luis would be at 36 percent of
capacity.
The Department of Water Resources (DWR) is urging the public to
avoid contact with water at San Luis Reservoir in Merced County
until further notice due to blue-green algae (cyanobacteria).
Boating is allowed, but swimming and other water-contact
recreation and sporting activities are not considered safe due
to potential adverse health effects. O’Neill Forebay remains at
caution advisory. For more information on caution and warning
level advisories, go to Harmful Algal Bloom website under
Advisory Signs.
In a multi-agency meeting on the state of
California’s drought conditions, state officials painted a
broader picture on water allocation, lack of available water
and what the Golden State is facing in the months and years to
come. Officials expect record low water levels across the
state, especially for Oroville and San Luis Reservoir. …
[T]he state is at 58% of average reservoir storage as a whole
for this time of year. … Climatologists say it’s too
early to tell if it’s going to be a wet or dry year during
winter time circulations. A lot of what happens is affected by
the jet stream.
Join us as we guide you on a virtual journey through California’s Central Valley, known as the nation’s breadbasket thanks to an imported supply of surface water and local groundwater. Covering about 20,000 square miles through the heart of the state, the valley provides 25 percent of the nation’s food, including 40 percent of all fruits, nuts and vegetables consumed throughout the country.
Don’t be fooled. Governor Gavin Newsom’s decision Monday to
declare drought in most of California, including here, is no
reason for most farmers in Stanislaus County to break out the
party hats. They know full well that words on a declaration
will not generate an extra drop of water for their orchards and
row crops. They also know that a drought declaration could take
some power over the water we do have from our locally elected
irrigation leaders — who represent institutions guiding us
through periodic droughts for more than 100 years — and hand it
to nonelected Sacramento bureaucrats.
California is in the second year of a drought. Governor Newsom
this week made his first drought declaration. Just how dry is
this drought, so far? What are some likely
implications? And what might State and local governments
do about it?
State and federal water officials have delivered their most
dire warning yet of California’s deepening drought, announcing
that water supply shortages are imminent and calling for quick
conservation. Among a handful of drastic actions this week, the
powerful State Water Board on Monday began sending notices to
California’s 40,000 water users, from small farms to big cities
like San Francisco, telling them to brace for cuts. It’s a
preliminary step before the possibility of ordering their water
draws to stop entirely.
Although the 1971 San Fernando earthquake and the near failure
of the Lower Van Norman Dam have given rise to construction
improvements … the overwhelming majority of California dams
are decades past their design life span. And while earthquakes
still loom as the greatest threat to California’s massive
collection of dams, experts warn that these aging structures
will be challenged further by a new and emerging hazard:
“whiplashing shifts” in extreme weather due to climate change.
California is enveloped in balmy weather that’s more like
spring than mid-winter — and that’s not a good thing. We have
seen only scant rain and snow this winter, indicating that the
state may be experiencing one of its periodic droughts and
adding another layer of crisis to the COVID-19 pandemic and
economic recession. The all-important Sierra snowpack,
California’s primary source of water, is scarcely half of what
is deemed a normal depth. -Written by Dan Walters, CalMatters columnist.
The Bureau of Reclamation sent Congress the final feasibility
report for the B.F. Sisk Dam Raise and Reservoir Expansion
Project. This marks an important step forward in returning
water supply reliability to south-of-Delta farmers, local
communities, and wildlife refuges.
The Bureau of Reclamation and San Luis & Delta-Mendota Water
Authority finalized the B.F. Sisk Dam Raise and Reservoir
Expansion Project’s Supplemental Environmental Impact
Statement/Environmental Impact Report. This joint proposed
project would create an additional 130,000 acre-feet of storage
space in San Luis Reservoir, producing additional water supply
for 2 million people, over 1 million acres of farmland and
200,000 acres of Pacific Flyway wetlands.
On Tuesday, the Bureau of Reclamation submitted the B.F. Sisk
Dam Safety of Dams Modification Report to Congress. This is
Reclamation’s largest project under the 1978 Safety of Dams
Act, and when complete, will modernize the structure to reduce
risk to water supply and downstream communities in an
earthquake.
Get ready… here comes the true California water cycle: It
begins with headlines and quotes warning of pending disaster
based on what could, might, maybe, or possibly happen over the
state’s water infrastructure.
Two agencies are studying the feasibility of supplementing a
seismic safety project planned for B.F. Sisk Dam with a second
component that would increase the capacity of San Luis
Reservoir. … While the dam safety project involves raising
the crest of the earthen structure as much as 12 feet, as well
as seismic reinforcements, it does not, in itself, increase
capacity in the reservoir.
The Department of Water Resources urged people to avoid
physical contact with the water at San Luis Reservoir in Merced
County until further notice due to blue-green algae. Boating is
allowed, but swimming and other water-contact recreation and
sporting activities are not considered safe under the warning
advisory due to potential adverse health effects.
Bureau of Reclamation employees from its Technical Service
Center were able to use visual and digital technology as they
worked remotely to complete and transmit the 60% design
specifications and drawings for the B. F. Sisk dam safety
modification. This modification, estimated to cost $1.1
billion, is the largest in the history of Reclamation’s Dam
Safety Program.
The Bureau of Reclamation and the California Department of
Water Resources are conducting exploratory work, including
clearing, excavation and controlled blasting of rock material
in the Basalt Hill area near B.F. Sisk Dam, located between Los
Banos and Gilroy, between 6 a.m. to 8 p.m. during April and
May. The exploratory findings on Reclamation lands will help
identify size and quality of granular material for the planned
Safety of Dams Modification project.
The James Irrigation District in western Fresno County has sued
the Westlands Water District over its plan to let farmers pump
salty groundwater into the Mendota Pool in exchange for water
from the San Luis Reservoir.
The preferred alternative to address seismic safety concerns at
the structure, commonly known as San Luis Dam, involves raising
the crest of the dam by 12 feet, adding shear keys to prevent
slippage and construction of downstream berms to strengthen the
structure… Work on the project is expected to begin in August
2021
President Donald Trump’s administration rolled out an
aggressive plan Tuesday to ship more water from the Delta to
farmers in the San Joaquin Valley, a move that’s certain to
trigger lawsuits by environmentalists concerned about
endangered fish species.
The Bureau of Reclamation and Valley Water released draft
environmental documents for public comment on the San Luis Low
Point Improvement Project, which addresses water delivery
interruptions and proposes to maintain reliable and
cost-effective water supply.
The Department of Water Resources (DWR) urged people to avoid
physical contact with the water at San Luis Reservoir in Merced
County until further notice and avoid eating fish from the lake
due to the presence of blue-green algae. DWR increased the
advisory from warning to danger after detecting an increased
amount of microcystins.
This event guided attendees on a virtual journey through California’s Central Valley, known as the nation’s breadbasket thanks to an imported supply of surface water and local groundwater. Covering about 20,000 square miles through the heart of the state, the valley provides 25 percent of the nation’s food, including 40 percent of all fruits, nuts and vegetables consumed throughout the country.
This virtual experience focused on the San Joaquin Valley, the southern part of the vast region, which is facing challenges after years of drought, dwindling water supplies, decreasing water quality and farmland conversion for urban growth. The tour gave participants an understanding of the region’s water use and issues as well as the agricultural practices, including new technologies and water-saving measures.
The San Joaquin Valley, known as the
nation’s breadbasket, grows a cornucopia of fruits, nuts and
other agricultural products.
During our three-day Central Valley Tour April
3-5, you will meet farmers who will explain how they prepare
the fields, irrigate their crops and harvest the produce that
helps feed the nation and beyond. We also will drive through
hundreds of miles of farmland and visit the rivers, dams,
reservoirs and groundwater wells that provide the water.
A coalition of environmental groups has called on California
members of Congress to prioritize the San Luis (B.F. Sisk)
Dam seismic remediation over federal funding for new California
dams. San Luis Dam is in a very seismically active area.
Independently reviewed risk assessments for Reclamation have
shown that a large earthquake could lead to crest settlement
and overtopping of the dam, which would result in large
uncontrolled releases and likely dam failure.
This tour ventured through California’s Central
Valley, known as the nation’s breadbasket thanks to an
imported supply of surface water and local groundwater. Covering
about 20,000 square miles through the heart of the state,
the valley provides 25 percent of the nation’s food, including 40
percent of all fruits, nuts and vegetables consumed throughout
the country.
We ventured through California’s Central Valley, known as
the nation’s breadbasket thanks to an imported supply of surface
water and local groundwater. Covering about 20,000 square
miles through the heart of the state, the valley provides 25
percent of the nation’s food, including 40 percent of all fruits,
nuts and vegetables consumed throughout the country.
Get a unique view of the San Joaquin Valley’s key dams and
reservoirs that store and transport water on our March Central
Valley Tour.
Our Central Valley
Tour, March 14-16, offers a broad view of water issues
in the San Joaquin Valley. In addition to the farms, orchards,
critical habitat for threatened bird populations, flood bypasses
and a national wildlife refuge, we visit some of California’s
major water infrastructure projects.
We ventured through California’s Central Valley, known as
the nation’s breadbasket thanks to an imported supply of surface
water and local groundwater. Covering about 20,000 square
miles through the heart of the state, the valley provides 25
percent of the nation’s food, including 40 percent of all fruits,
nuts and vegetables consumed throughout the country.
Last summer it was a jarring symbol of California’s historic
five-year drought. San Luis Reservoir — the vast lake along
Highway 152 between Gilroy and Los Banos, the state’s
fifth-largest reservoir and a key link in the water supply for
millions of people and thousands of acres of Central Valley
farmland — was just 10 percent full.
San Luis Reservoir west of Los Banos is on its way to filling
for the first time since 2011 as rain and snow bring the state
additional relief from a punishing drought. Statewide, a series
of storms over the past two weeks have allowed water managers
to fill major reservoirs to above-normal levels for this time
of year.
Robert Haskins walked across a vast expanse of cracked mud,
littered with old beer bottles and millions of tiny clam
shells, that in most Augusts would be 50 feet underwater. But
the San Luis Reservoir, the vast inland sea along Highway 152
that is a key part of Silicon Valley’s water supply, is only 10
percent full, its lowest level in 27 years.
This 25-minute documentary-style DVD, developed in partnership
with the California Department of Water Resources, provides an
excellent overview of climate change and how it is already
affecting California. The DVD also explains what scientists
anticipate in the future related to sea level rise and
precipitation/runoff changes and explores the efforts that are
underway to plan and adapt to climate.
This 3-day, 2-night tour travels the length of the San Joaquin
Valley, giving participants a clear understanding of the State
Water Project and Central Valley Project.
30-minute DVD that traces the history of the U.S. Bureau of
Reclamation and its role in the development of the West. Includes
extensive historic footage of farming and the construction of
dams and other water projects, and discusses historic and modern
day issues.
Water as a renewable resource is depicted in this 18×24 inch
poster. Water is renewed again and again by the natural
hydrologic cycle where water evaporates, transpires from plants,
rises to form clouds, and returns to the earth as precipitation.
Excellent for elementary school classroom use.
The 24-page Layperson’s Guide to the Central Valley Project
explores the history and development of the federal Central
Valley Project (CVP), California’s largest surface water delivery
system. In addition to the project’s history, the guide describes
the various CVP facilities, CVP operations, the benefits the CVP
brought to the state and the CVP Improvement Act (CVPIA).
This 3-day, 2-night tour travels the length of the San Joaquin
Valley, giving participants a clear understanding of the State
Water Project and Central Valley Project. Stops include the Kern
County Water Bank, the San Joaquin River,
Terminus Dam, Mendota Pool, Friant Dam, San Luis
National Wildlife Refuge and San Luis Reservoir.
A new look for our most popular product! And it’s the perfect
gift for the water wonk in your life.
Our 24×36 inch California Water Map is widely known for being the
definitive poster that shows the integral role water plays in the
state. On this updated version, it is easier to see California’s
natural waterways and man-made reservoirs and aqueducts
– including federally, state and locally funded
projects – the wild and scenic rivers system, and
natural lakes. The map features beautiful photos of
California’s natural environment, rivers, water projects,
wildlife, and urban and agricultural uses and the
text focuses on key issues: water supply, water use, water
projects, the Delta, wild and scenic rivers and the Colorado
River.
