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San Diego Water Authority Celebrates 20 Years of Secure, Clean Water Through Landmark Pact

/in , , /by /Times of San Diegoby Elizabeth Ireland / City News Service Mentioned: San Diego County Water Authority

The San Diego County Water Authority announced that Sunday marks 20 years since water officials across the Southwestern U.S. signed the largest water conservation-transfer agreement in the nation’s history, enabling two decades of sourcing clean water from the Colorado River.

Known as the Colorado River Quantification Settlement Agreement, or QSA, the agreements settled decades of dispute over Colorado River water.

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How California Reservoir Water Levels Will Change, According to Predictions

/in , , /by /Newsweek by Anna Skinner

Many of California’s reservoirs are far above their average capacity, but water levels are expected to change as the winter season progresses.

The U.S. Southwest has suffered from years of drought, and until recently, the most severe impacts have been centered around Lake Mead and Lake Powell and much of California. Last year, none of California was free from drought, and more than 16 percent of the state suffered from exceptional drought, which is the United States Geological Survey’s (USGS) most extreme classification.

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Reservoirs Are So Full Long Beach Will Buy Water at a Discount, Save its Groundwater

/in , , /by /Long Beach Post by Jason Ruiz

With California reservoirs full after a historically wet winter, the Long Beach Utilities Commission has signed off on a plan to buy more imported water at a discount to help other cities clear space to capture more rain during the upcoming winter season.

Long Beach typically pumps over 60% of its customers’ water from local ground aquifers and is able to avoid paying for more expensive water piped in through the State Water Project or the Colorado River.

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QSA: Landmark Conservation Pact Marks 20 Years of Water Security for San Diego

/in , , /by /Water News Network Quoted: San Diego County Water Authority

Twenty years ago, in October 2003, water officials from across the Southwest signed the largest water conservation-and-transfer agreement in U.S. history, the QSA, or Quantification Settlement Agreement. The agreement has provided decades of water security for San Diego County and benefits for numerous partners across the Southwest. In total, that pact supplies more than half of the water that sustains San Diego County’s 3.3 million residents and $268 billion economy.

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QSA: Landmark Conservation Pact Marks 20 Years of Water Security for San Diego

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Twenty years ago, in October 2003, water officials from across the Southwest signed the largest water conservation-and-transfer agreement in U.S. history, the QSA, or Quantification Settlement Agreement. The agreement has provided decades of water security for San Diego County and benefits for numerous partners across the Southwest. In total, that pact supplies more than half of the water that sustains San Diego County’s 3.3 million residents and $268 billion economy.

The 2003 QSA, provides more than 30 million acre-feet of high-priority conserved water to the San Diego region over multiple decades. It helped stabilize demands on the Colorado River and reduced California’s overdependence on surplus supplies. The historic set of more than 20 agreements resulted from years of negotiations between the San Diego County Water Authority, Coachella Valley Water District, Imperial Irrigation District, Metropolitan Water District of Southern California, State of California, and the U.S. Department of the Interior that culminated in a signing ceremony at Hoover Dam.

2003 Quantification Settlement Agreement (QSA) forged conservation model for Southwest

“This landmark water deal has stood the test of time, providing numerous benefits both in the San Diego region and more broadly across the Southwest,” said Mel Katz, chair of the Water Authority Board of Directors. “One of its most important accomplishments is that it brought water agencies together as collaborators. We’ve had disagreements along the way, but history has validated the value of our collective efforts to provide water security.”

Key components of the QSA included limiting how much water California would take from the Colorado River and a water transfer based on voluntary conservation. The agreement between the Imperial Irrigation District and the Water Authority, the cornerstone of the QSA, remains the largest agriculture-to-urban water transfer in the nation.

Conservation measures

Under the agreement, the Water Authority pays the IID to implement a variety of irrigation system and on-farm conservation measures that collectively save 200,000 acre-feet a year, which is transferred to San Diego County. Conserved water will continue to flow to the San Diego region through 2047, but that agreement can be extended through 2077 if both parties agree. (An acre-foot is about 326,000 gallons, or enough to serve three single-family homes for a year.)

In addition, the Water Authority secured $257 million in state subsidies to help pay for lining portions of the All-American and Coachella canals. As a result of those projects, the Water Authority is receiving 77,700 acre-feet of conserved water annually for 110 years.

Water-use efficiency

The QSA settled long-standing disputes over water inside California, and it provided a means to better manage the river through voluntary conservation programs and a storage program in Lake Mead. Today, the agreements continue to meet the primary goals of ensuring Colorado River water in California and the Lower Basin is put to beneficial use, that agricultural water-use efficiency improvements are adequately funded, water rights are protected, and the environment is addressed, most notably at the Salton Sea.

“The QSA, through its mutually beneficial formula of providing secure water supplies through voluntary conservation, offers a template for other regions of the Southwest as we collectively seek to live within the reduced flows of the Colorado River,” said Dan Denham, Water Authority general manager. “I’m very proud of the work we and our QSA partners have done to get to this point – and I recognize that more collaboration, resilience and vision will be needed to thrive in a hotter and drier future.”

A Warming Colorado River Grapples With Invasive Species

/in , , /by /The Hillby Sharon Udasin

As climate change bakes the U.S. West and dries up key Colorado River reservoirs, a slew of invasive species is flourishing in warmer waters at the expense of the artery’s native inhabitants.

Among the most disruptive of this wide range of invaders is the smallmouth bass, which scientists fear could pose a possible danger to the native ecology of the Grand Canyon region should the fish continue making their way downstream.

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Reliable Water Supplies Make San Diego Region Well-Prepared for 2024

/in , , /by /Water News Network Quoted: San Diego County Water Authority

Thanks to a decades-long supply diversification strategy and continued efficient use of water across the region, the San Diego County Water Authority announced that the region has reliable supplies to meet demands in Water Year 2024, which started October 1.

Hydrologists use Oct. 1 to begin measuring the snow and rain that will help carry water users through dry summer months the following calendar year. This fall, El Niño conditions continue to strengthen and could bring above-average precipitation to Southern California.

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Reliable Water Supplies Make San Diego Region Well-Prepared for 2024

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Thanks to a decades-long supply diversification strategy and continued efficient use of water across the region, the San Diego County Water Authority announced that the region has reliable supplies to meet demands in Water Year 2024, which started October 1.

Hydrologists use Oct. 1 to begin measuring the snow and rain that will help carry water users through dry summer months the following calendar year. This fall, El Niño conditions continue to strengthen and could bring above-average precipitation to Southern California. In a recent El Niño forecast by NOAA, there is a greater than 95% chance that El Niño continues across the Northern Hemisphere through the winter into 2024. The chance of a “strong” El Niño is 71%.

“San Diego County continues to have the water necessary to support our $268 billion economy and quality of life for 3.3 million residents,” said Mel Katz, chair of the Water Authority Board of Directors. “We are grateful for the reprieve from drought – but we recognize that dry times will return, probably sooner than later. We are ready when they do.”

Despite significant rain and snow over the past 12 months, longer-term trends indicate a hotter, drier Southwest climate. Across the arid Southwest, water agencies are spending billions of dollars to increase water supply reliability as they balance the costs of investments against the costs of not having enough water for homes and businesses.

Long-term investments and water-use efficiency sustain region

Since the early 1990s, the Water Authority and its 24 member agencies have made major investments in supply reliability, including in the landmark conservation-based 2003 Quantification Settlement Agreement, which provides over half of the region’s water, the building of the nation’s largest seawater desalination plant, and in the maintaining and upgrading of water infrastructure. That strategy has paid off during dry times. Just one year ago, the situation was dramatically different in other parts of Southern California, as millions of residents were reduced to health and safety water rations – though regional investments meant the San Diego region was spared.

Reliable water supplies

Compared to recent years, the new water year begins with improved supply conditions at the Water Authority’s two imported water sources – the Colorado River and the Sierra Nevada. On the Colorado River, a good water year and conservation efforts raised storage levels, prompting the U.S. Bureau of Reclamation to declare that California will not face supply restrictions through 2024.

Meanwhile, in Northern California, Lake Oroville and San Luis Reservoir – two key State Water Project reservoirs – had 2.76 million more acre-feet in storage combined at the end of August 2023 compared to the prior August. (An acre-foot is approximately 325,900 gallons, or enough water to meet the annual needs of three typical single-family households.)

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The San Diego County Water Authority added desalinated seawater to its supply portfolio in 2015 with the start of commercial operations at the nation’s largest seawater desalination plant. Photo: San Diego County Water Authority

In the San Diego region, water users also benefit from the Claude “Bud” Lewis Carlsbad Desalination Plant, as well as increased water storage levels in many local reservoirs. At the end of August 2023, member agency local storage was up 137,400 acre-feet, or 80%, compared to the same time in 2022. Meanwhile, the Water Authority had approximately 100,000 acre-feet available in emergency and carryover storage. This represents emergency storage for up to six-months and carryover storage to minimize or avoid potential supply cutbacks during periods of drought or other supply shortage events.

How Top Lawmakers Are Working to Secure Arizona’s Drinking Water

/in , , /by /ABC 15by Kaley O'Kelley

The Colorado River is one of the most important sources of fresh water in the United States, flowing through Arizona and six other states.

According to the U.S. Department of the Interior Bureau of Reclamation, it provides water to nearly 40 million people for municipal use.

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California Just Experienced a ‘Miracle’ Water Year. But Winter Could Bring New Challenges

/in , , /by /Los Angeles Timesby Hayley Smith

The typically parched, brown hills above Los Angeles are a vibrant shade of green — a rarity for early October.

In state parks, waterfalls and rivers that were vastly reduced are now gushing with water.

And in Lake Oroville, boats float on deep blue water that only a year ago was shrinking toward record lows.

The transformed landscape is the result of a remarkable California water year that saw 141% of average rainfall statewide, officials announced this week. The state received 33.56 inches of rain — nearly twice the amount of rain recorded during the previous water year and nearly three times the amount from the year prior. The water year runs from Oct. 1 to Sept. 30.

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