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Yuima is among the smallest water districts in the San Diego County metropolitan area, covering 13,460 acres. Its 10 largest water users are all agricultural customers, consuming approximately 70 percent of total district water deliveries annually. Photo: Yuima Municipal Water District Pauma Valley

Cooperation Preserves Pauma Valley Groundwater

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Instead of waiting for Yuima Valley’s precious groundwater supplies to dry up, the Yuima Municipal Water District and local farmers are working cooperatively to create a sustainable long-term strategy for maintaining the region’s economy and quality of life by proactively managing the valley’s aquifer.

To the east in Borrego Springs, the chronically water-short community offers a warning about over-tapping groundwater. Borrego Springs expects to face a 75 percent reduction in water supplies by 2040. The current plan is to let 3,800 acres of agriculture go fallow because farms use 80 percent of the community’s groundwater.

Yuima farmers also have relied on groundwater supplies for decades. Crops such as citrus and avocado flourish in the valley, nestled between Palomar Mountain and Valley Center.

But Yuima farmers want a different kind of future than they see unfolding in other groundwater-dependent areas of arid West.

Working with growers to sustain agriculture

The Yuima Municipal Water District worked with farmers to find realistic, reliable, cost-effective strategies for his customers to keep their farms flourishing without 100 percent reliance on groundwater. Photo: Yuima Municipal Water District

The Yuima Municipal Water District worked with farmers to find realistic, reliable, cost-effective strategies for customers to keep their farms flourishing without 100 percent reliance on groundwater. Photo: Yuima Municipal Water District

Richard Williamson, general manager of the Yuima water district, is working with growers to sustain production and avoid groundwater depletion. When groundwater is pumped faster than it’s recharged, negative effects include reduced water quality, reduced surface water supplies, and land subsidence (or sinking).

“What we’ve tried to do is work on a program encouraging farmers to join our system,” Williamson said. “Many have been pumping wells on their property, and they know it will be curtailed in the future due to new laws protecting groundwater. They need to look to imported water to make up the difference.”

Yuima is among the smallest water districts in the region, covering 13,460 acres. Its 10 largest water users are all agricultural customers, consuming approximately 70 percent of total district water deliveries annually.

Facing increasing state regulations and increasingly hot summers, Williamson worked with farmers to find realistic, reliable, cost-effective strategies for his customers to keep their farms flourishing without 100 percent reliance on groundwater. Adopting a rate structure giving farmers lower pricing in exchange for flexible reliability is the key. The strategy allows the district to slow water deliveries to agricultural customers when imported water supplies are in high demand, similar to power companies offering reduced rates for interruptible service.

“There was a fair amount of discussion and education,” said Williamson. “Farming interests knew they had to come up with an alternative source of water to replace what they might not have in the future. They know it doesn’t serve anyone to draw the system down to nothing. They can look across this valley. All you see is green, citrus and horticulture being raised.”

Yuima agricultural water users try new program

Pauma Valley’s largest agricultural water user and a large avocado farm were the first to sign on. “It was a win-win situation,” said Williamson, “They still pump groundwater, but not as much as they used to. It will help everyone under the new groundwater regulations. Knowing it’s always available, they can set their watering patterns to meet the best efficiency from their water dollars as they possibly can.”

Now Yuima MWD is working to offer imported water supplies through the new program to additional farms by increasing system capacity.

“We currently have projects under way that will double our amount of imported water coming into the district,” said Williamson. “That will be done by 2020, so at that point it will coincide with these new regulations in place. We want to be ready with other agriculture interests. They are under the gun and need alternative sources of water.”

Williamson said so far, Yuima hasn’t faced water supply interruptions. “Because Pauma Valley is such a close-knit community, we will call our biggest users and warn them, ‘Things are a little tight, can you water at night or cut back watering time a little bit to get through this crunch?’ Everyone has been extremely cooperative with this idea.”

Williamson says the goal for his district is to remove the supply interruption provisions completely when capacity upgrades are completed in 2020.

“This valley is all about two things: agriculture, and Indian gaming. The tribes have indicated they don’t want to see agriculture hurt here. They feel it creates a really nice environment,” Williamson said. “This district takes a lot of pride being part of that environment. We want to be a positive influence, rather than wearing a black hat.”

 

 

 

A new landmark agreement led by the San Diego County Water Authority will provide regional water solutions which include storing water in Lake Mead. Photo: National Park Service

OPINION: San Diego Is Ready For Some Big Water Solutions

/in , /by /San Diego Union-Tribuneby Jim Madaffer

Back in the early 1990s — near the start of my career at San Diego City Hall — the San Diego County Water Authority launched a historic effort to sustain the region’s economy and quality of life by diversifying our water supplies so that we didn’t depend on one source for 95 percent of our water. That effort took many forms, many billions of dollars and more than two decades — but it paid off in spades. Even though we are at the literal end of the pipeline, today we have among the most diversified and secure water supply systems anywhere.

Full story here: https://bit.ly/2VDRBE7

 

 

 

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As a result of the atmospheric river weather phenomenon, California has experienced higher than average rainfall in water year 2019. Graphic: National Weather Service

Atmospheric Rivers Benefit State, Regional Water Supply

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Atmospheric river events in late January and in February have significantly increased snowpack in the Sierra Nevada and the Rocky Mountains, key sources of water supply for the state and San Diego County.

“We’re thrilled by the amount of precipitation – rain and snow – in San Diego County, the Sierra and the Rockies,” said Dana Friehauf, a resource manager with the San Diego County Water Authority.

The statewide Sierra Nevada snowpack was 151 percent of normal at 104 reporting stations for February 27, according to the California Department of Water Resources. The Rockies have received significant snowfall, which will feed the Colorado River, a source of water supply for the Water Authority. The amount of precipitation in most of the Rocky Mountain region, has ranged from 100 to 150 percent for Water Year 2019 through February 25, according to data from the Natural Resources Conservation Service. The percentage is based on the median between 1981 and 2010.

As a result of the atmospheric river weather phenomenon, California has experienced higher than average rainfall in water year 2019. Graphic: National Weather Service

As a result of the atmospheric river weather phenomenon, California has experienced higher than average rainfall in water year 2019. Graphic: National Weather Service

Record rainfall recorded in San Diego

Locally, a bountiful February has helped make Water Year 2019 one of the wettest on record at Lindbergh Field. Preliminary data from the National Weather Service indicates 10.62 inches of precipitation at the San Diego International Airport, with 3.42 inches coming so far in February 2019.

The Weather Service report issued Feb. 24 also shows that last year at this time, just 1.91 inches of precipitation had been recorded at the airport (for Water Year 2018).

In fact, Water Year 2018 (October 1 – September 30) was the second-driest on record since 1850 at Lindbergh Field, with just 3.3 inches of rain, or 32 percent of the long-term average.

Friehauf reminds San Diegans that even in years such as this, when rainfall is plentiful, that water-use efficiency remains a way of life. For instance, each rainstorm is an opportunity to turn off irrigation systems for days or even weeks at a time. She also suggests residents use rain barrels to collect or “harvest” water that can be used later, when the weather is drier.

Capturing the water from gutters and downspouts also reduces the amount of water flowing into storm drains. Homeowners can get rebates on residential rain barrels. Find details on rain barrel rebates here.

 

 

 

 

 

A snow-covered Sierra Nevada Mountain peak to the northwest from the Phillips Station meadow season. Photo: Dale Kolke / California Department of Water Resources snowmelt

Report: Shorter Winters Could Impact Snowpack and Water Supply

/in , /by by Water News Network

New research shows shorter periods of winter weather are altering snowpack melt times, with potentially significant implications for water management and wildfires.

Associate Professor Amato Evan at UC San Diego’s Scripps Institution of Oceanography analyzed snowpack data from 1982 through 2017, publishing his analysis in the December Journal of Applied Meteorology and Climatology, and presenting his findings at the American Geophysical Union Fall Meeting in Washington, D.C.

Evan found no decline in snowfall totals overall, but he discovered snow in mountainous regions is disappearing earlier in the year – in line with earlier projections and modeling. California and other western states rely heavily on snowfall and snowpack for water. When the snowpack melts, it fills reservoirs, a vital resource for cities and farms.

If snowmelt occurs more quickly than normal, it could result in reservoirs filling earlier in the winter or spring. If that dynamic isn’t managed correctly, it could result in losing water supply when the reservoirs overflow. Evan noted California would be among the most-affected states.

Investments buffer San Diego region

Three decades of investments to diversify the San Diego region’s water supply sources with seawater desalination, recycled water and other supplies have lessened the local impact of snowpack variations, said Dana Friehauf, water resources manager for the San Diego County Water Authority. The San Diego region relies on snowmelt in the Rockies and the Sierra Nevada, along with a variety of local water resources. In addition, the Water Authority has expanded local water storage by raising San Vicente Dam and more than doubling the reservoir’s capacity. That allows the region to hold more imported supplies during wet years to prepare for dry ones.

“By increasing water-use efficiency and investing in drought-resilient supplies and local storage, the San Diego region is less susceptible to changes in snowmelt,” said Friehauf. “But climatic shifts likely will be an important factor in water management across the West for years to come.”

Researcher observes winter weather declines

Evan used data for his research collected from a network of over 400 snow telemetry sensors across the western U.S. The sensors compress and expand as snow falls and melts, measuring the weight of the snowpack throughout the season. Evan developed a mathematical expression he could apply to the observations which can identify trends in snowpack variations over the course of the winter season.

Evan found two key changes in mountain snowpack consistent across the western U.S. First, warmer fall and spring seasons are “squeezing” winters, making them shorter from a weather perspective.

Second, higher elevations are showing snowpack characteristics normally found at lower altitudes, with a gradual build up and gradual decline. This translates into less snow and earlier melts. While this has been shown in climate model simulations, the Scripps study is the first time it has been observed. Evan’s findings are consistent with numerous other methods of measuring changes in the seasons.

“The power of this work was the ability to examine how and why snowpack is changing throughout the year,” Evan said in a Scripps news release. “In terms of freshwater in the West, the total amount of snow we receive during the year is important, but how long into the spring that snow stays frozen up in the mountains is also critical.”

The Scripps research was supported by funding from the Climate Program Office at the National Oceanic and Atmospheric Administration.

The California Department of Water Resources conducted the second snow survey of the 2019 season at Phillips Station in the Sierra Nevada Mountains. The survey site is approximately 90 miles east of Sacramento in El Dorado County. Photo: Florence Low / California Department of Water Resources.

Mid-Winter Storms Drench California, Boost Sierra Snowpack

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A remarkable series of winter storms in January and early February has doubled the Sierra Nevada snowpack and recharged reservoirs across the state of California. With more rain and snow in the forecast, California’s water supply picture is far better than it was a year ago, when San Diego received the second-lowest amount of rainfall on record since 1850.

In San Diego County, Lindbergh Field has recorded more than nine inches of rain since October 1, which is nearly the average annual rainfall of 10.33 inches, according to the National Weather Service. More storms are on the way: NWS has forecast more showers in the next few weeks.

Some of the wettest local spots include Mt. Woodson, which received 4.34 inches of rain in the past five days, Lower Oat Flats with 4.08 inches, Rainbow Camp with 3.6 inches, and Fallbrook and Bonsall each with 3.41 inches.

Local rainfall is important, because it allows residents and farmers to reduce or eliminate irrigation for weeks or months at time while Mother Nature does the work. In addition, local surface water meets about 10 percent of San Diego’s annual water needs. From a supply perspective, it is much more important snowpacks continue to grow in the Rocky Mountains and the Sierra Nevada.

Water conditions far better than 2018

Surveyors with the California Department of Water Resources recorded 50 inches of snow and a “snow water equivalent” of 18 inches on January 31 at Phillips Station, where DWR has conducted manual snow surveys for decades.

This was the second of five snow surveys planned for this winter. More than 50 agencies at the local, state and federal levels collaborate on the Cooperative Snow Surveys Program to collect snow data from more than 300 locations statewide each year. Results from these surveys are crucial to water management in California.

The most recent survey at Phillips Station showed the snowpack as 98 percent of average to date – just shy of the statewide average. By comparison, on February 1, 2018, measurements at Phillips Station showed a snow water equivalent of 2.6 inches – just 14 percent of the early-February average. Snow water equivalent is a standard metric of how much water is held in snow.

In the Upper Colorado River Basin, conditions are slightly better than they are in California – a good sign for a region that has suffered nearly two decades of drought. Precipitation and snow water equivalent were both at 105 percent of average at the end of January.

No shortages are expected on the Colorado River system in 2019, though long-term drought conditions continue to be a concern across the Southwest.

San Diego well-positioned to meet regional water demands

The National Weather Service reports that between Oct. 1, 2018, and Feb. 6, 2019, San Diego County received more than nine inches of rain at Lindbergh Field, which was 165 percent of normal, and more than 11 inches of rain at Ramona Airport, which was 142 percent of normal.

“This winter is shaping up nicely,” said Jeff Stephenson, a principal water resources specialist at the San Diego County Water Authority. “A well-timed string of storms and cooler temperatures is allowing us to leave water in storage for use during the dry summer months – and it’s important that everyone continue to leave off their irrigation systems while there’s plenty of water in the soil.”

No matter how the winter plays out, the Water Authority and its 24 member agencies have enough water to meet regional water demands for the foreseeable future. This is made possible by a combination of investments in drought-resilient resources, including the Claude “Bud” Lewis Carlsbad Desalination Plant, conserved agricultural water transfers and continued water-use efficiency measures.

L to R: Water Authority Deputy General Manager Sandra Kerl, Poseidon Water CEO Carlos Riva, and former Senator Barbara Boxer share a toast at Thursday's third anniversary event at the Carlsbad desalination plant. Photo: Water Authority

Carlsbad Desalination Plant Celebrates 40 Billion Gallons Served

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San Diego County marked a significant milestone in regional water supply reliability Thursday at the Claude “Bud” Lewis Carlsbad Desalination Plant – the delivery of 40 billion gallons of drinking water during its first three years of commercial operations.

This is enough water to fill 800 million bathtubs, or 1,820 Bellagio Las Vegas fountains.

The plant, which launched its commercial operations in December 2015, provides San Diego County with 50 million gallons of locally-controlled, climate-resilient and high-quality water a day, helping to minimize the region’s vulnerability to droughts.

The Carlsbad Desalination Plant has delivered 40 billion gallons of fresh, clean drinking water during its three years of operation. Photo: Water Authority

The Carlsbad Desalination Plant has delivered 40 billion gallons of fresh, clean drinking water during its three years of operation. Photo: Water Authority

Former U.S. Sen. Barbara Boxer, a long-time champion for water reliability projects like the Carlsbad facility, spoke at the third anniversary event on Dec. 13.

“This facility has helped protect public health and safety and the economy during the worst recorded drought in California history,” according to Boxer’s prepared remarks. “Here in California, we need to have a multifaceted water plan that includes conservation, recycling, recharging underground aquifers, and catching water as it falls.

“The Carlsbad Desalination Plant is a model for how desalination should be done in California, and more facilities modeled after Carlsbad are certainly going to be needed,” said Boxer. Boxer said in arid regions like Southern California where most of the population lives along the coast, seawater desalination is the only way to ensure residents’ water needs are met under extreme conditions brought on by climate change.

Most advanced and efficient desalination plant worldwide

The Carlsbad desalination facility is the largest, most technologically advanced and energy-efficient desalination plant in the nation. It was made possible through an innovative public-private partnership between Poseidon Water and the San Diego County Water Authority. The plant enhances water supply reliability in the San Diego region by meeting nearly 10 percent of the region’s water demand – or about a quarter of all the water generated in the county.

“We’re just thrilled,” said Sandra Kerl, deputy general manager of the San Diego County Water Authority. “It’s hard to believe it’s been three years and that we’re on the 40 billionth gallon. To have been a part of a project that provides a service that all of us can’t live without is really quite gratifying.”

Desalination is a cornerstone of the Water Authority’s strategies. Regardless of weather conditions, the Carlsbad plant produces a core supply of water day-in and day-out.

Visitors tour the Carlsbad desalination plant during Thursday's anniversary event. Photo: Water Authority

Visitors tour the Carlsbad desalination plant during Thursday’s anniversary event. Photo: Water Authority

Since the plant opened, it has also proved to be an educational and inspiring tool for water innovation across the country and throughout the world. Tour groups visit the plant monthly to learn about the plant’s operation and the partnership between Poseidon Water and the Water Authority.

At the Dec. 13 event, participants toasted the success of the plan with glasses filled with fresh, desalinated water from the plant. “A toast to Pacific on Tap and continued water reliability in San Diego County thanks to desalinated water!” said Carlos Riva, CEO of Poseidon Water.

For more information, go to the project website, carlsbaddesal.com, or the Water Authority’s website, sdcwa.org.

READ MORE:

CBS 8: Carlsbad desalination plant celebrates 40 billionth gallon of water

Fox 5 San Diego: County desalination plant celebrates 40 billion gallons of drinking water

KGTV 10 News: Carlsbad desalination plant celebrates milestone

NBC 7 San Diego: Carlsbad Desalination Plant Purifies 40 Billionth Gallon of Ocean Water

Times of San Diego: County Desalination Plant Celebrates 40 Billionth Gallon of Water

San Diego’s airport reported 3.98 inches of rain between the start of the 2019 water year on Oct. 1 and Dec. 7, according to the National Weather Service. Photo: James Arnott, Flickr/Creative Commons License Wat

Late-Fall Storms Improve Water Outlook Statewide

/in , /by by Water News Network Staff

San Diego welcomed an unexpectedly large amount of rain since mid-November, surpassing last year’s rainfall total in just the first 10 weeks of the season.

Following the latest storm, two-day precipitation totals on Dec. 7 showed rainfall of 2.6 inches at San Diego’s Lindbergh Field, San Diego’s official weather station. Regional readings ranged from a high of 3.23 inches in the University Heights area of San Diego, to 1.1 inches in Lakeside and less than an inch in the county’s desert areas.

San Diego’s airport reported 3.98 inches of rain between the start of the 2019 water year on Oct. 1 and Dec. 7, according to the National Weather Service.  Just over three inches of rain was recorded at Lindbergh Field between Oct. 1, 2017, and Sept. 30, 2018 – the second lowest total since 1850.

To put the water season in perspective, average rainfall at this time of year is about 1.8 inches.

Sierra Nevada Snowpack off to a Fast Start

In Northern California, late-fall storm systems have dropped a generous amount of snow in the Sierra Nevada, which had been very dry through mid-November. Many mountain areas are reporting twice the average snowpack for mid-December.

More than 60 percent of the state’s water supply comes from Sierra Nevada snowpack as it melts and releases water to lower elevations.  The more snow that falls each winter, the more protection the state builds against drought the following year. 

The news is also positive in the Rocky Mountains, though the Upper Colorado River Basin has been struggling with drought for nearly two decades. Rainfall was at 119 percent of average in mid-November.

San Diego Region has Sufficient Supplies for 2019

For San Diego County, the National Oceanic and Atmospheric Administration’s Climate Prediction Center’s three-month weather outlook for December through February predicts above-normal precipitation across all of California except the very northern tier. The agency also predicts above-normal temperatures for the western states, with a greater than 40 percent probability of above-normal temperatures this winter statewide.

Even if weather conditions were to dry out through September 2019, the Water Authority and its member agencies have enough water supplies to meet regional demands for the foreseeable future. This is possible due to a combination of drought-resilient local and regional water resources, including the Claude “Bud” Lewis Carlsbad Desalination Plant, conserved agricultural water transfers, savings from canal lining projects, and continued water-use efficiency measures.

A weak El Nino is expected to form and continue in the Northern Hemisphere this winter and into the spring. As a result, the U.S. Seasonal Drought Outlook released on Nov. 15 favors drought improvement or removal for California and the southern portion of the Southwest.

Meteorologist Alex Tardy of the National Weather Service San Diego office predicted near-average precipitation in the region in his 2018-2019 outlook, noting that “past precipitation events have been extreme” with extended dry periods between storm patterns that bring heavy rain.

Water reliability is vital to the region’s core industries including craft brewing. Photo: Water Authority Outreach program

Airport Ads Remind Travelers San Diego Is Brought To You By Water

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The San Diego County Water Authority’s Brought to You by Water outreach and education program made its debut on advertising monitors at Lindbergh Field the day before Thanksgiving – just in time for the busy holiday travel season.

Through the San Diego County Regional Airport Authority’s community promotion program, the ads are expected to remain in the rotation indefinitely, reminding travelers about the importance of water reliability to the region’s quality of life. The electronic display ads are visible in multiple spots throughout baggage claim areas in both Terminal 1 and Terminal 2.

Ads underscore important message about importance of water reliability

Water reliability is vital to the region’s core industries including craft brewing. Photo: Water Authority

The partnership between the Airport Authority and the Water Authority helps educate the region’s residents and visitors on the impact of something many take for granted – a safe and reliable water supply that sustains the region’s $220 billion economy and the quality of life of 3.3 million people.

The Water Authority is focusing on four core industries during the first phase of its Brought to You by Water program – manufacturing, tourism, agriculture and craft brewing. The initial airport ads highlight the craft beer industry, which has a $1.1 billion regional economic impact annually, and the tourism industry, which attracts 35 million visitors a year to the region.

Overall, access to reliable water supplies support $482 million per day in regional sales – the equivalent of nearly three Comic-Cons per day, according to a June report by the San Diego Regional Economic Development Corporation.

In addition to the airport ads, the Brought to You by Water program has included the creation of the Water News Network, the inaugural Water Innovation and Efficiency Award, a partnership with the hotel-motel industry to promote water-use efficiency by guests, participation in numerous community outreach events, and many other efforts designed to enhance appreciation for the region’s most precious natural resource.

For more information about Brought to You by Water, go to B2UbyH2O.org.

 

 

Check irrigation systems when changing the clocks on Sunday November 4. Photo: Kelly M. Grow/ California Department of Water Resources daylight savinig time

Fall Back and Save Water As Clocks Change

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Whether you are excited about an extra hour of sleep or dour about losing an hour of sunlight at the end of the day, daylight saving time ends Sunday, Nov. 4. The annual adjustment is a great reminder to perform several important household tasks, such as replacing smoke alarm batteries and restocking emergency preparedness kits.

The San Diego County Water Authority asks residents to add one more important task when changing the clocks: Adjust irrigation systems to save water in the months ahead.

“Adjusting irrigation is an easy way to conserve water, since landscapes need less irrigation as the days get shorter and cooler,” said Dana Friehauf, a water resources manager for the Water Authority. “Residents also should make sure their irrigation systems are working correctly, and are free of broken sprinkler heads or other leaks that waste water.”

Approximately half of a typical California household’s water use is outdoors. Seasonal adjustments to irrigation controllers in preparation for winter weather not only reduce water waste, they benefit the health of landscape plants.

Cool-season water-saving practices can reduce use

Additional water-saving practices during the fall and winter months include:

  • Turning off irrigation systems when rainstorms are predicted.
  • Leaving irrigation systems off for at least a week after significant rainfall.
  • Installing rain barrels or cisterns to help capture stormwater from roofs and store it for future irrigation use.

Fall is also the ideal time for residents to upgrade thirsty turf yards to WaterSmart sustainable landscapes. Homeowners can take advantage of winter rains to help establish a new landscape. The Water Authority’s award-winning WaterSmart Landscape Makeover Program offers a variety of free classes and how-to online videos to guide homeowners through the conversion process. More information is at WaterSmartSD.

In addition, there are a limited number of residential rebates available for homeowners who want to upgrade to sustainable landscaping at SoCal Water$mart.

The Water Authority offers additional water-saving resources for residents and businesses through its Live WaterSmart campaign. These include:

  • Free water-use surveys and irrigation checkups
  • Rebates for highly efficient irrigation equipment, washing machines and other devices
  • Water-efficiency training for professional landscapers
  • An online home water-use calculator and other tools

For a comprehensive list of tips, or to learn more about the Water Authority’s suite of water-saving resources, go to WaterSmartSD.org.

 

NOAA's three month weather outlook predicting the amount of rainfall across the U.S. Map: NOAA.gov

Water Supplies Sufficient for 2019 Demands Despite Hot, Dry Weather

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At the start of the 2019 water year, the combination of diversified water supplies and water-use efficiency means the San Diego region has enough water for 2019 and the foreseeable future despite historically low rainfall over the past 12 months.

“It has been very hot and dry, but we have invested wisely in infrastructure and regional water-use remains well below where it was at the start of the last drought,” said Jeff Stephenson, a principal water resources specialist with the Water Authority. “In fact, potable water use over the past three-plus years was 17 percent below 2013, which shows that San Diego continues to live WaterSmart.”

Still, said Stephenson, “we are looking for a wet winter locally, and in the Sierra and Rocky Mountains, to help replenish reserves for future years.”

Water managers use “water years” that run from October 1 through September 30 to track rain and snow. Local rainfall during water year 2018 totaled just over 3 inches at Lindbergh Field – 67 percent below normal and the second-lowest in San Diego history dating back to 1850.

In addition, local temperatures have been significantly above normal for most of the past five years. In many of those months, the average daily maximum temperatures were more than 4 degrees above long-term averages.

Forecasts predict continued warm weather conditions through December

The National Weather Service’s Climate Prediction Center forecasts continued warm conditions for California through December, with a 33 percent probability of above-normal precipitation locally. The U.S. Drought Monitor’s classification of San Diego County as an area of “Severe Drought” is based on weather factors – but it does not reflect water supply conditions.

More than $3.5 billion in regional water investments by San Diego County ratepayers over the past three decades mean water supplies will meet demands regardless of the weather.

New supplies and infrastructure upgrades include the Claude “Bud” Lewis Carlsbad Desalination Plant, which delivers approximately 50 million gallons of potable water per day for regional use, along with a ramp-up of water delivered to San Diego County as part of a long-term water conservation and transfer deal signed in 2003.

Other regional assets include the storage of 100,000 acre-feet of water behind the raised San Vicente Dam due to conservation efforts during the last drought. In addition, many key reservoirs statewide, including Diamond Valley Lake in Riverside County, remain near average levels for this time of year. Significantly, no shortages are expected on the Colorado River system in 2019, though long-term drought conditions continue to be a concern across the Southwestern U.S.

The Water Authority offers several programs, including a Landscape Transformation program rebate, to promote water-use efficiency. Residents and business can also attend free sustainable landscaping classes, and access online videos and tips. To learn more about those resources and others, go to WaterSmartSD.org.