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Atmospheric Rivers-CW3E-Scripps-Rain

Landfalling Atmospheric Rivers Increase in First Quarter of Water Year 2021 Over 2020

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A Scripps Center for Western Weather and Water Extremes report shows that more atmospheric rivers have made landfall over the U.S. West Coast in the first four months of Water Year 2021 compared to the previous period in 2020.

The four months of Water Year 2021 experienced a total of 35 landfalling ARs over the U.S. West Coast, six more than the first four months of Water Year 2020, according to the CW3E quarter year summary released February 11.

Key takeaways from the CW3E update on atmospheric rivers

• The first four months of Water Year 2021 experienced a total of 35 landfalling ARs over the U.S. West Coast, 6 more than the first four months of Water Year 2020.
• Water Year 2021 also experienced more than twice as many strong or greater ARs (14) compared to Water Year 2020 (6).
• While Water Year 2021 saw more ARs in its first 4 months compared to Water Year 2020, a large majority of those ARs were
strongest over the Pacific Northwest (Oregon and Washington).
• The average landfall latitude thus far in Water Year 2021 was 45.9°N compared to 43.9°N during the first half of Water Year 2020.
• The lack of landfalling ARs over Southern California and Baja California has resulted in much drier conditions over the southwestern U.S. compared to WY 2020.

CW3E-Atmospheric Rivers-Water Year 2021

The four months of Water Year 2021 experienced a total of 35 landfalling ARs over the U.S. West Coast, six more than the first four months of Water Year 2020. Graphic: Center for Western Weather and Water Extremes

Distribution of Landfalling Atmospheric Rivers over the U.S. West Coast During Water Year 2021: Quarter Year Summary

Atmospheric River-NOAA-WNN-CW3E

A partnership with the San Diego County Water Authority and the Scripps Institution of Oceanography at UC San Diego seeks to optimize water management to better predict atmospheric rivers before, during, and after those seasonal storms.

In August 2020, Scripps Center for Western Weather and Water Extremes (CW3E) launched the Water Affiliates Group, which brings together cutting-edge science and hands-on water industry experience to enhance reservoir operations in light of the changing climate. The Water Authority has a long-running alliance with Scripps and is among six founding water agencies statewide.

CW3E and its partners will share and support best practices in forecast-informed reservoir operations, increase research around atmospheric rivers and droughts, and develop strategies for mitigating flood risk and increasing water supply reliability.

Atmospheric Rivers-CW3E-water supply

The above image, from the EOS article, is a depiction of an atmospheric river, interacting with West Coast mountains and a midlatitude cyclone over the northeast Pacific on 5 February 2015. This image provides an example of approximate locations of associated tropical moisture exports and a warm conveyor belt (WCB). Graphic: Adapted from NOAA/ESRL Physical Sciences Division via CW3E

Tish Berge Joins Water Authority Executive Leadership Team

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February 11, 2021 – Veteran water industry executive Tish Berge is joining the San Diego County Water Authority as assistant general manager, bringing experience from every aspect of water utility management to serve the region. Berge is currently general manager of the Sweetwater Authority, one of the Water Authority’s 24 member agencies. Berge starts her new role February 22 alongside Deputy General Manager Dan Denham and General Manager Sandra L. Kerl.

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Helix Water District-Demonstration Landscape-WaterSmart

Helix Water District Demonstration Landscape Blossoms

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The plants are thriving at Helix Water District’s demonstration landscape just eight months after the project was completed. The WaterSmart plants at the District’s administration office in La Mesa beautify the neighorhood while inspiring people to install sustainable, WaterSmart landscaping.

“Everything is growing in beautifully,” said Helix Water District General Manager Carlos Lugo. “We started with smaller plants to reduce costs and planned for growth. We’re happy to share this resource with our customers and community.”

Demonstration landscape includes water-wise gardens

The demonstration landscape includes three unique water-wise gardens on the streets around the building, including a Mediterranean garden on University Avenue, a desert landscape on Lee Avenue and a California native landscape along the building’s main entrance on Quince Street. Each garden started with smaller plants of varying colors, flowers and textures.

Helix Water District-Landscape-WaterSmart-Lee Ave

Desert landscape on Lee Avenue at Helix Water District in La Mesa. Photo: Helix Water District

“The grasses in our native garden are filling in the mulched areas, creating a soft meadow-like appearance,” said Lugo. “We are also seeing the canopies of the Palo Verde trees expanding, and underneath, the succulents and agaves are blanketing the hillside, filling the landscape with color and texture.”

Helix Water District-Landscape-WaterSmart-Grasses

Grasses create a meadow-like appearance in some of the Helix Water District demonstration landscape gardens. Photo: Helix Water District

Plants provide wildlife habitat

The plants in all three of the gardens are adapted to San Diego’s climate and need half to a fifth of the water that a traditional lawn needs. In addition to requiring less water, WaterSmart landscapes also require less maintenance and provide habitat for local wildlife like honeybees, birds and butterflies.

In each garden, plant markers provide the name of each plant and a QR code, which when scanned with a smartphone, provide each plant’s name, sun and water needs, mature size and photo.

Customers can also use the district’s interactive webpage to make a list of their favorite plants and download each garden’s design plan. Information on efficient irrigation and rebate programs is also available.

Helix Water District-Landscape-WaterSmart

Native, water-wise plants thrive on Quince Street in one of the Helix Water District gardens. Photo: Helix Water District

The project was completed in June 2020 and partially funded through a grant from the Metropolitan Water District of Southern California.

Helix Water District provides water treatment and distribution for 277,000 people in the cities of El Cajon, La Mesa and Lemon Grove, the community of Spring Valley and areas of Lakeside – east of downtown San Diego. Helix is also a founding member of The Water Conservation Garden, a nearly six-acre water-wise demonstration garden in El Cajon.

City of Oceanside-Pure Water Oceanside-water recycling

Pure Water Oceanside Project Reaches Milestones

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Pure Water Oceanside construction remains on schedule for completion in 2022, with several significant milestones recently completed. The Oceanside project will purify recycled water to create a new, local source of high-quality drinking water that is safe, drought-proof and environmentally sound.

“Construction has impacted many residents and businesses,” said Cari Dale, City of Oceanside water utilities director. “Please know the City of Oceanside appreciates your patience. We thank people for understanding the need for this project and bearing with us during these months of construction impacts. This work is temporary, but the benefits will last for generations.”

Pure Water Oceanside Project foundation walls in place

Now under construction, Pure Water Oceanside will purify recycled water to create a new, local source of high-quality drinking water that is clean, safe, drought-proof and environmentally sound. Photo: Jeremy Kemp, City of Oceanside

Now under construction, the project will purify recycled water to create a new, local source of high-quality drinking water that is safe, drought-proof and environmentally sound. Photo: Jeremy Kemp/City of Oceanside

The foundational work on the facility located in the San Luis Rey Water Reclamation Facility is complete. Pipelines, electrical conduits, equipment pads/pedestals, and wet wells have been constructed. Prefabricated walls have been installed. Installing the roof and additional wall stabilizing are next on the schedule.

The water purification equipment including pumps, membrane filters, and reverse osmosis canisters are currently being manufactured. Delivery is anticipated between this summer and fall.

Coco Farms Drive and Fireside Park construction update

Work on the south side of Coco Palms Drive near the El Camino Real intersection begins this month. Parking in the area will be closed during this work period with "no parking" signs posted. Map: City of Oceanside

Work on the south side of Coco Palms Drive near the El Camino Real intersection begins this month. Parking in the area will be closed during this work period with “no parking” signs posted. Graphic: City of Oceanside

The two injection wells on Coco Palms Drive are complete. Sound walls will be removed. Construction on two planned monitoring wells is anticipated to begin within the next two months. Sound walls will be installed prior to extended hours construction into evenings and weekends to reduce the impact on the community.

Coco Palms Drive will continue to be closed for the next few months while pipeline construction is underway.

Work on the south side of Coco Palms Drive near the El Camino Real intersection begins this month. Parking in the area will be closed during this work period with “no parking” signs posted.

Monitoring well work in Fireside Park will take place primarily during the daytime, with possible evening and weekend work for critical activities. Sound walls will be installed to reduce noise. Drilling and development is estimated to take six weeks.

El Camino Real recycled water expansion pipeline work coming soon

An overhead look at pipeline installation along Douglas Drive in Oceanside for Pure Water Oceanside project. Photo: Jeremy Kemp, City of Oceanside

An overhead look at pipeline installation along Douglas Drive in Oceanside for Pure Water Oceanside. Photo: Jeremy Kemp/City of Oceanside

Pipeline installation work will begin soon to install recycled water pipelines under El Camino Real. Traffic delays are expected and alternative routes are suggested.

Cones will be set up in work zones to redirect traffic from closed lanes and flagger workers will help drivers safely navigate intersections. Regular working hours will be Monday through Friday, 7 a.m. to 5 p.m. with occasional work on Saturdays.

Work at the Mission Avenue and El Camino Real intersection will be at night to reduce commuter traffic impacts. Work hours will be from 8 p.m. to 4 a.m.

Oceanside Project benefits both residents and environment

Construction personnel guide reverse osmosis skids into place. Photo: Jeremy Kemp, City of Oceanside

Construction personnel guide reverse osmosis skids into place. Photo: Jeremy Kemp/City of Oceanside

Approximately 90% of Oceanside’s drinking water is imported. Pure Water Oceanside will create three to five million gallons of drinking water each day, enough water to provide 32% of the City of Oceanside’s water supply.

The water purification process uses reverse osmosis and advanced oxidation to create safe drinking water. The technology removes pharmaceuticals, chemicals, hormones, microplastics, and personal care products.

The project protects sensitive ecosystems by reducing the amount of water siphoned by imported water sources. It decreases the amount of recycled water discharged into the ocean, and uses half the energy needed to transport imported water, reducing greenhouse gas emissions.

Residents are kept up to date on construction impacts to streets and other infrastructure through several outreach efforts including an interactive construction map, detailed online schedule, regular newsletters, and virtual open house presentations live on the City of Oceanside’s YouTube channel, offering residents the opportunity to ask questions.

Olivenhain Municipal Water District Logo landscape design workshops

OMWD Begins the New Year by Connecting a Local Neighborhood to Recycled Water

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Encinitas, Calif. — Olivenhain Municipal Water District has connected the newly developing Santa Fe Heights neighborhood to
its recycled water system, supplying the community with locally produced recycled water.
“We are excited to see another neighborhood begin using recycled water for irrigation,” said OMWD Board Secretary Ed
Sprague. “Using recycled water is key for long-term sustainability of our water supply.”

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Precipitation-Snowpack Survey-Sierra Nevada-DWR

Precipitation Below Average in California

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Precipitation is below average in California for the current water year. Despite recent storms that increased the statewide Sierra Nevada snowpack to 70% of average to date, the state is experiencing its second consecutive below average year for rain and snow. The water year starts on October 1 and ends September 30.

The Department of Water Resources Feb. 3 conducted the second manual snow survey of the season at Phillips Station. The manual survey recorded 63 inches of snow depth and a snow water equivalent, or SWE, of 17 inches, which is 93% of average for that location, according to the DWR. The SWE measures the amount of water contained in the snowpack and is a key component of DWR’s water supply forecast.

“The recent blast of winter weather was a welcome sight, but it was not enough to offset this winter’s dry start,” said DWR Director Karla Nemeth. “While there is still a chance we will see additional storms in the coming weeks, the Department and other state agencies are preparing for the potential for a second consecutive year of dry conditions.”

La Niña-Sierra Nevada-snowpack-climate-snow survey

Below normal precipitation is favored throughout most of the southern tier of the United States in late February to early March, according to the National Weather Service Climate Prediction Center. La Niña conditions remain over the Pacific Ocean.

Precipitation below normal

Statewide snow survey measurements reflect those dry conditions. Measurements from DWR’s electronic snow survey stations indicate that statewide the snowpack’s SWE is 12.5 inches, or 70% of the February 3 average, and 45% of the April 1 average. April 1 is typically when California’s snowpack is the deepest and has the highest SWE.

“The recent atmospheric storms have brought rain and snow to the northern Sierra Nevada, but conditions are still well below normal,” said Goldy Herbon, San Diego County Water Authority senior resources specialist.

Following last year’s below average water year, northern California is now experiencing its second straight water year of below average precipitation.

Colorado River Basin

Another source of the state’s water supply, the Colorado River Basin, isn’t faring much better. The water year 2021 precipitation at the end of January for the Colorado River Basin is 66% of normal, according to the U.S. Bureau of Reclamation.

Precipitation totals to date are behind historical averages for two of the main sources of San Diego County’s supply, with two months to go in the winter season but, a couple of atmospheric rivers can change that quickly.

“The San Diego region will have a plentiful and reliable source of water due to actions taken by the Water Authority and its 24 member agencies to diversify the water supply,” said Herbon. “Continuing efforts to expand supply sources, including desalination, water reuse, and recycling, will ensure that the water needs are met for the region’s 3.3 million people and its $245 billion economy.”

Fall 2020 was extremely dry, especially in the Sierra Nevada, and follows last year’s below-average snow and precipitation, according to the DWR. With only a couple months remaining in California’s traditional wet season, DWR officials say Californians should look at ways to reduce water use at home.

snowpack-reservoirs-Snow survey

Statewide Sierra Nevada snowpack is 71% of average for February 4, 2021. Graphic: California Department of Water Resources

Regular valve maintenance prevents unanticipated shutdowns of water service to Vallecitos Water District customers. Photo: Vallecitos Water District

Vallecitos Water District Valve Maintenance Program Ensures Reliable Service

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Just as owners perform routine maintenance to keep their cars running smoothly, water systems need regular maintenance to provide reliable service. The Vallecitos Water District’s Valve Maintenance Program ensures these vital components in its water distribution remain in good working condition throughout the District. Valves left without proper maintenance for long periods can become a serious problem, especially in an emergency water shutdown.

VWD’s Construction Department manages the program. Two-person teams use maps to familiarize themselves with the location of the 4,959 valves in the system, not including fire hydrants and fire services. Critical valves serve hospitals and businesses. Between 300 and 500 valves are serviced monthly, following American Water Works Association standards.

Small but vital parts monitored

Construction worker Justin Shutt explains valves are isolation and shutoff point for water mains along streets.

“If we have a main break, where a main ruptures, we need to be able to isolate those certain sections without taking too many people out of water” by shutting the valves, said Shutt.

Valve Maintenance Technician John Truppa runs the valve maintenance program. He trains crew members how to use the valve exerciser machine, read maps properly, and respond to customer calls. Customer service is a priority. When a customer reports a water line leak in their home, the valve maintenance crew helps by shutting off the water at the meter.

The Vallecitos Water District’s geographic information system provides a written record of valve location, condition, maintenance, and inspection records for each valve serviced. Reliable recordkeeping is vital to ensure all valves receive regular maintenance and are replaced before coming to the end of their service life to reduce the percentage of failures and inoperable valves. The District monitors valve life span to replace them prior to failure. Areas prone to water main breaks and valves on mains serving large groups of customers get added attention.

Taking turns

Between 300 and 500 valves are serviced monthly by two person teams. Photo: Vallecitos Water District

Between 300 and 500 valves are serviced monthly by two-person teams. Photo: Vallecitos Water District

Valve maintenance involves performing a prescribed number of turns to “exercise” or test the valve. Turns are calculated in part by the size of the main. Larger transmission water mains require more valve turns, both up and down. Turning speed is also important. If valves are closed too quickly, it creates “water hammer,” or sudden pressure forcing water down the line, potentially triggering water main breaks. You may have heard a water hammer in your house when you shut off a household valve suddenly.

Ounce of prevention

The District's geographic information system (GIS) provides a written record of valve location, condition, maintenance, and inspection records for each valve serviced. Photo: Vallecitos Water District

The Vallecitos Water District’s geographic information system provides a written record of valve location, condition, maintenance, and inspection records for each valve serviced. Photo: Vallecitos Water District

Regular valve maintenance prevents unanticipated shutdowns of water service to Vallecitos customers.

“We want to take as few people out of water at a time as we possibly can,” said Shutt. “We keep up on the upgrades and make sure the valves are working the way they’re supposed to.”

The proactive approach by the Vallecitos Water District ensures the reliable delivery of quality water to its customers while ensuring all systems are working properly.

Water-deliveries-Hauck Mesa-Storage Reservoir-

New Reservoir to Protect Local Drinking Water Deliveries in North County

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A major construction project to improve drinking water supply reliability in North San Diego County will start in February after the San Diego County Water Authority’s Board of Directors today approved an $11.4 million contract for the work to Pacific Hydrotech Corporation of Perris, Calif.

The Hauck Mesa Storage Reservoir project includes demolition of an abandoned steel tank, building a 2.1 million-gallon storage reservoir connected to the Valley Center Pipeline, and construction of an isolation vault and an underground flow control facility. The project is expected to be completed by winter 2022.

Infrastructure improvements ensure water delivery

Strategic infrastructure improvements by the Water Authority and its 24 member agencies are part of the regional effort to ensure continued delivery of water to support the region’s $245 billion economy and the quality of life for 3.3 million residents. The Water Authority just completed a $30 million series of upgrades on the historic First Aqueduct in North County to ensure these facilities continue to serve the region for many more decades.

“These upgrades are investments in our future,” said Water Authority Board Chair Gary Croucher. “Ever-changing conditions mean the work is complex and challenging, but continued vigilance helps ensure that we can meet our region’s water needs both today and for decades to come.”

As part of the asset management program, it is critical to actively replace and repair the Water Authority’s assets, which include pipes, valves, facilities, equipment and other infrastructure.

Operational flexibility

The new Hauck Mesa Storage Reservoir will provide operational flexibility, enhanced system reliability for the day-to-day operations of the aqueduct system, and help ensure water deliveries can be maintained even if power supplies are interrupted.

The Water Authority will continue to work closely with the Valley Center community, Valley Center Municipal Water District, and nearby homeowners to minimize short-term construction impacts.

For more information on the Hauck Mesa Storage Reservoir project, go to www.sdcwa.org/hauck-mesa-storage-reservoir.

New Reservoir to Protect Local Drinking Water Deliveries in North County

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January 28, 2021 – A major construction project to improve drinking water supply reliability in North County will start in February after the San Diego County Water Authority’s Board of Directors today approved an $11.4 million contract for the work to Pacific Hydrotech Corporation of Perris, Calif.

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Vista Irrigation District Logo

Water District to Sponsor Scholarship Contest

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Vista, Calif. — Vista Irrigation District invites local high school seniors to compete for scholarships from the district. Up to six scholarships may be awarded; the minimum scholarship award amount is $1,000 and the maximum scholarship award amount is $3,000. The purpose of the scholarship program is to encourage students to learn more about water related issues impacting their community.

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