Mono Lake is an inland sea sitting near the border of the Nevada
state line, east of Yosemite National Park. It was the target of
a major environmental battle between the 1970s and the 1990s.
The lake has a surface area of about 70 square miles, is the
second largest lake in California and one of the oldest in North
America. Its salty water occupies former volcanic craters and is
highly alkaline.
Los Angeles began diverting water from Mono Lake tributaries in
the 1940s, extending the Los Angeles Aqueduct from the Owens
Valley. Forty years later, the water level of the lake had
dropped more than 40 feet to threaten wildlife (shrimp and birds)
and uncover stretches of the lake bed, which in dust storms stirs
up toxic dust.
In 1983, the California Supreme Court held the public trust
doctrine applied to Los Angeles’ rights to divert water from Mono
Lake’s feeder streams. In 1991, a superior court halted LADWP’s
water exports. Restoration is underway to increase the water
level by 20 feet by 2021.
During the 2021 runoff year (April 1, 2021–March 31, 2022), the
Los Angeles Department of Water & Power (DWP) was allowed to
export up to 16,000 acre-feet of stream diversions from the
Mono Basin because Mono Lake was above 6380 feet above sea
level on April 1, 2021. Yet, only 13,300 acre-feet of water was
taken, consistent with the low reservoir requirements in DWP’s
water licenses, which were amended last year by the California
State Water Resources Control Board. The new licenses contain
an overall minimum level of 11,500 acre-feet of storage for
Grant Lake Reservoir, with a minimum of 20,000 acre-feet for
July–September.
Conservation groups are speaking out in support of water rights
in rural Mono County, saying thirsty Los Angeles is endangering
wildlife, ranching and tourism. All parties are awaiting the
judge’s decision after a recent hearing, where the Los Angeles
Department of Water and Power (DWP) argued it has the right to
cut off water ranchers use to irrigate Long Valley and Little
Round Valley for cattle grazing near the Crowley Lake
Reservoir. Wendy Schneider, executive director of the nonprofit
Friends of the Inyo, said the DWP bought up water rights 100
years ago, but the Eastern Sierra is getting the short end of
the stick.
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.
The 28-page Layperson’s Guide to
Water Rights Law, recognized as the most thorough explanation of
California water rights law available to non-lawyers, traces the
authority for water flowing in a stream or reservoir, from a
faucet or into an irrigation ditch through the complex web of
California water rights.
The 24-page Layperson’s Guide to California Water provides an
excellent overview of the history of water development and use in
California. It includes sections on flood management; the state,
federal and Colorado River delivery systems; Delta issues; water
rights; environmental issues; water quality; and options for
stretching the water supply such as water marketing and
conjunctive use. New in this 10th edition of the guide is a
section on the human need for water.
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.
The Pacific Flyway is one of four
major North American migration routes for birds, especially
waterfowl, and extends from Alaska and Canada, through
California, to Mexico and South America. Each year, birds follow
ancestral patterns as they travel the flyway on their annual
north-south migration. Along the way, they need stopover sites
such as wetlands with suitable habitat and food supplies. In
California, 90 percent of historic wetlands have been lost.
Mono Lake is an inland sea located east of Yosemite National Park
near the Nevada border. It became the focus of a major
environmental battle from the 1970s to the 1990s.
The lake has a surface area of about 70 square miles and is the
second largest lake in California and one of the oldest in North
America. Its salty waters occupy former volcanic craters. The old
volcanoes contribute to the geology of the lake basin, which
includes sulfates, salt and carbonates.
They are remnants of another time. A time when the Southwest’s
climate was much cooler and probably wetter, and large lakes
covered vast tracts of land in Nevada, Utah, southeastern Oregon
and California’s Eastern Sierra. Beginning some 14,000 years ago,
the region’s climate grew warmer and drier, shrinking these
lakes’ shorelines and leaving behind an arid landscape dotted
with isolated bodies of water including Pyramid Lake, Mono Lake
and the Great Salt Lake.
This issue of Western Water examines the challenges facing state,
federal and tribal officials and other stakeholders as they work
to manage terminal lakes. It includes background information on
the formation of these lakes, and overviews of the water quality,
habitat and political issues surrounding these distinctive bodies
of water. Much of the information in this article originated at
the September 2004 StateManagement Issues at Terminal Water
Bodies/Closed Basins conference.
