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Major Reservoir Upgrade is Part of Poway Water Infrastructure Program

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Construction on the City of Poway’s clearwell replacement is anticipated to begin this fall following the award of contract to Gateway Pacific Contractors, Inc. The contract was awarded at the Sept. 19 Poway City Council meeting.

The clearwell is Poway’s major storage reservoir for water treated at the water treatment plant, prior to being distributed to Poway water customers.

Poway Water Infrastructure Program

Replacing the aging clearwell, built in 1964, is the second phase of the Water Infrastructure Improvement Program. This program is the largest capital improvement program (CIP) in the city’s 43-year history. The first phase of the program built the infrastructure necessary to bypass the clearwell. The improvements to Poway’s water system will increase the reliability of drinking water for water customers now and for generations to come.

The two tanks that will be built as part of the clearwell replacement project, will provide Poway’s water system with redundancy and operational flexibility in that one tank can be taken offline for maintenance and repairs without interrupting service. Gatweway Pacific was the lowest responsible bidder for the project, with a bid amount of approximately $31.6 million.

The targeted construction start date is Fall 2023 and will include the restoration of the ballfield at Lake Poway once the new tanks are operational. The project is expected to be completed in Fall 2026.

Water Projects Overview

With the goal of increasing the reliability of drinking water for water customers now and generations to come, the City of Poway is undertaking the largest capital improvement program (CIP) in the city’s 40-year history.

The CIP will include replacing the clearwell (water storage reservoir) at the water treatment plant and a new San Diego County Water Authority treated water connection and redundant pipeline. In order to replace the clearwell, a bypass system consisting of two 1.4 million-gallon tanks, pipelines, a pump station and other appurtenances will be constructed.

These infrastructure improvement projects have been in the planning stage for a long time and are moving ahead as part of a mutual agreement between Poway and the State Division of Drinking Water.

SDCWA Treated Water Connection/Redundant Pipeline

The San Diego County Water Authority treated water connection and redundant pipeline project provides Poway with its first treated water connection to the Water Authority’s treated water aqueduct, as well as providing redundant pipelines. This project will help diversify Poway’s water supply portfolio and allow for operational flexibility and plant maintenance. It will also provide a redundant pipeline to the 36″ water transmission line on Lake Poway Road, which is currently the single transmission line that carries treated water to the distribution system.

The Poway City Council considered approval of the engineering design agreements during the April 5, 2022 City Council meeting. The City is also working with the Water Authority to evaluate alternatives to reduce the cost of this project.

(Editor’s note: The City of Poway is one of the San Diego County Water Authority’s 24 member agencies that deliver water across the San Diego County region.) 

Padre Dam Municipal Water District-Ivan Andujar-Division 4

Padre Dam Board Appoints New Board Member to Division 4

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Padre Dam Municipal Water District’s Board of Directors has appointed Ivan Andujar to fill the Board vacancy in Division 4  as the result of the recent passing of August Caires. Andujar was sworn into office and officially seated on the Board of Directors immediately following the Board appointment at the September 6, 2023 Board meeting.  Andujar will serve for the remainder of the current team which expires in December 2024.

“It is a true honor to have been selected to represent Division 4. My interest in being part of Padre Dam’s Board is to be a voice for the customers I serve in Division 4,” said newly appointed Board Member Ivan Andujar. “My first priority as a new Board member will be to learn all aspects of Padre Dam operations so that I will have the knowledge necessary to make sound decisions with my fellow Board members.”

Andujar was one of three candidate who applied for the open Board seat in Division 4. After Board interviews at the regular Board meeting, Andujar was selected as the top choice of three candidates.

Padre Dam MWD-Andujar-Board of Directors-Division 4

“It is a true honor to have been selected to represent Division 4. My interest in being part of Padre Dam’s Board is to be a voice for the customers I serve in Division 4,” stated newly appointed Board Member Ivan Andujar. Photo: Padre Dam Municipal Water District

Active community member

Andujar prides himself as being an active community member within the area he lives – East County. He currently serves as the Chief Operations Officer for the East County Transitional Living Center and also is the Chairman of the Alpine/Mountain Empire Chamber of Commerce. Additionally, Andujar is a member of the El Cajon Rotary Club, Lakeside Kiwanis, San Diego Leadership Foundation and Community Emergency Response Team.

Andujar-Padre Dam MWD-Division 4-Board of Directors

Ivan Andujar was sworn into office and officially seated on the Board of Directors immediately following the Board appointment at the September 6, 2023 Board meeting.  Andujar will serve for the remainder of the current team which expires in December 2024. Photo: Padre Dam Municipal Water District

Padre Dam provides water, sewer, recycled water and recreation services to approximately 102,000 residents in East San Diego County including Santee, El Cajon, Lakeside, Flinn Springs, Harbison Canyon, Blossom Valley, Alpine, Dehesa and Crest. The District is a public agency with policies and procedures directed by an elected five-member Board of Directors. The District imports 100% of our treated water supply and treats two million gallons per day (MGD) of wastewater at our Water Recycling Facility.

(Editor’s note: The Padre Dam Municipal Water District is one of the San Diego County Water Authority’s 24 member agencies that deliver water across the metropolitan San Diego region.)

El Niño-NOAA-Northern Hemisphere-Winter

El Niño Anticipated to Continue Through the Northern Hemisphere Winter

/in , /by /NWS Climate Prediction Center

El Niño is anticipated to continue through the Northern Hemisphere winter (with a greater than 95% chance through January – March 2024). An El Niño Advisory remains in effect.

In August, sea surface temperatures (SSTs) were above average across the equatorial Pacific Ocean [Fig. 1], with strengthening in the central and east-central Pacific. All of the latest weekly Niño indices were in excess of +1.0°C: Niño-4 was +1.1°C, Niño-3.4 was +1.6°C, Niño-3 was +2.2°C, and Niño1+2 was +2.9°C [Fig. 2]. Area-averaged subsurface temperatures anomalies increased compared to July [Fig. 3] in association with anomalous warmth in the central and eastern equatorial Pacific Ocean [Fig. 4]. Tropical atmospheric anomalies were also consistent with El Niño. Over the east-central Pacific, low-level winds were anomalously westerly, while upper-level winds were anomalously easterly. Convection was slightly enhanced around the International Date Line, stretching into the eastern Pacific, just north of the equator. Convection was mostly suppressed around Indonesia [Fig. 5]. The equatorial Southern Oscillation Index (SOI) and the traditional station-based SOI were both significantly negative. Collectively, the coupled ocean-atmosphere system reflected El Niño.

El Niño Winter

The most recent IRI plume indicates El Niño will persist through the Northern Hemisphere winter 2023-24 [Fig. 6]. Despite nearly the same ensemble mean amplitude as last month, the shorter forecast horizon means that the odds of at least a “strong” El Niño (≥1.5°C for the November-January seasonal average in Niño-3.4) have increased to 71%. However, a strong El Niño does not necessarily equate to strong impacts locally, with the odds of related climate anomalies often lower than the chances of El Niño itself (e.g., CPC’s seasonal outlooks). In summary, El Niño is anticipated to continue through the Northern Hemisphere winter (with greater than 95% chance through January – March 2024; [Fig. 7]).

Next El Niño update in October

This discussion is a consolidated effort of the National Oceanic and Atmospheric Administration (NOAA), NOAA’s National Weather Service, and their funded institutions. Oceanic and atmospheric conditions are updated weekly on the Climate Prediction Center web site (El Niño/La Niña Current Conditions and Expert Discussions). Additional perspectives and analysis are also available in an ENSO blog. A probabilistic strength forecast is available here. The next ENSO Diagnostics Discussion is scheduled for 12 October 2023.

El Niño

El Niño is anticipated to continue through the Northern Hemisphere winter (with a greater than 95% chance through January – March 2024). An El Niño Advisory remains in effect. Graphic: NOAA

Full discussion on the latest El Niño update from the National Weather Service Climate Prediction Center: www.cpc.ncep.noaa.gov/products/analysis_monitoring/enso_advisory/ensodisc.shtml

 

Sweetwater Authority Logo 2019Sweetwater Authority Logo 2019

Sweetwater Authority Launches Community Advisory Work Group, Seeking Engagement and Input from Stakeholders on Future Projects

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Chula Vista, Calif. – On September 26, 2023, Sweetwater Authority will hold the first meeting of its newly-formed Community Advisory Work Group. The group offers Authority stakeholders a platform to actively engage in the projects and initiatives of the water agency. By providing input, participants will help shape the future of their community’s water services and infrastructure.

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New California Law Bolsters Groundwater Recharge as Strategic Defense Against Climate Change

/in , , , /by /Water News Networkby Nick Cahill / Western Water / Water Education Foundation

A new but little-known change in California law designating aquifers as “natural infrastructure” promises to unleash a flood of public funding for projects that increase the state’s supply of groundwater.

The change is buried in a sweeping state budget-related law, enacted in July, that also makes it easier for property owners and water managers to divert floodwater for storage underground.

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FIRO-Scripps-Law-Water Management

New California Law Taps Science to Improve Water Management

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

Legislation signed into law by California Governor Gavin Newsom ensures the state has the science and weather forecasting tools it needs for more flexible reservoir operations. The bill, AB 30, makes breakthrough water management technology standard for the California Department of Water Resources.

The legislation was introduced by San Diego Assemblymember Chris Ward and co-sponsored by the Sonoma County Water Agency and the San Diego County Water Authority. The bill was supported by the Water Authority’s partner, UC San Diego’s Scripps Institution of Oceanography.

The strategy is called forecast-informed reservoir operations, or FIRO, and it complements Gov. Newsom’s California Water Supply strategy released in August 2022 calling for more reservoir storage capacity to capture runoff from big storms, often fueled by atmospheric rivers. The governor and Legislature have already provided funding for state water managers to integrate the strategy.

FIRO-Science-water management

Diagram illustrating the FIRO process to develop an adaptive water control manual. Graphic courtesy Scripps Institution of Oceanography Center for Western Weather and Water Extremes

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FIRO-Scripps-Law-Water Management

New California Law Taps Science to Improve Water Management

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Legislation signed into law by California Governor Gavin Newsom ensures the state has the science and weather forecasting tools it needs for more flexible reservoir operations. The bill, AB 30, makes breakthrough water management technology standard for the California Department of Water Resources.

The legislation was introduced by San Diego Assemblymember Chris Ward and co-sponsored by the Sonoma County Water Agency and the San Diego County Water Authority. The bill was supported by the Water Authority’s partner, UC San Diego’s Scripps Institution of Oceanography.

Forecast-Informed Reservoir Operations strategy will help deal with drought and flood

The strategy is called forecast-informed reservoir operations, or FIRO, and it complements Gov. Newsom’s California Water Supply strategy released in August 2022 calling for more reservoir storage capacity to capture runoff from big storms, often fueled by atmospheric rivers. The governor and Legislature have already provided funding for state water managers to integrate the strategy.

“We thank Assemblymember Chris Ward for his leadership and vision in supporting next-gen water management and flood reduction efforts that will benefit residents statewide,” said Mel Katz, chair of the San Diego County Water Authority Board of Directors. “The legislation provides an innovative approach to help San Diego County and California thrive in the changing climate.”

Forecast-informed reservoir operations use weather predictions to advise dam operators about how much water to retain or release from reservoirs, enhancing their ability to handle whatever nature serves up while retaining as much water as possible in storage.

FIRO-Science-water management

Diagram illustrating the FIRO process to develop an adaptive water control manual. Graphic courtesy Scripps Institution of Oceanography Center for Western Weather and Water Extremes

Many reservoirs in the West are strictly regulated based on historical averages of winter storms and spring runoff. Under existing rules, the highly variable rainfall from year to year is not directly considered. Complicating the problem, many current guidelines and practices were developed before satellites, radar and advanced numerical models significantly improved weather forecasts.

To address these challenges, researchers at Scripps Institution of Oceanography and elsewhere developed tools that provide weather forecasters with reliable notice of atmospheric rivers a week in advance. Advancing this research could have taken decades, but sophisticated prediction products have evolved in less than 10 years with funding by the San Diego County Water Authority and other water agencies statewide, along with state and federal support.

The Water Authority has partnered with SIO and the Scripps Center for Western Weather and Water Extremes at UC San Diego, to share and support best practices in FIRO, to increase research around atmospheric rivers and droughts, and develop strategies for mitigating flood risk and increasing water supply reliability.

Few Strong Landfalling Atmospheric Rivers Reach California

San Diego County Water Authority And its 24 Member Agencies

New California Law Taps Science to Improve Water Management

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Legislation signed into law by California Governor Gavin Newsom ensures the state has the science and weather forecasting tools it needs for more flexible reservoir operations. The bill, AB 30, makes breakthrough water management technology standard for the California Department of Water Resources.

The legislation was introduced by San Diego Assemblymember Chris Ward and co-sponsored by the Sonoma County Water Agency and the San Diego County Water Authority. The bill was supported by the Water Authority’s partner, UC San Diego’s Scripps Institution of Oceanography.

The strategy is called forecast-informed reservoir operations, or FIRO, and it complements Gov. Newsom’s California Water Supply strategy released in August 2022 calling for more reservoir storage capacity to capture runoff from big storms, often fueled by atmospheric rivers. The governor and Legislature have already provided funding for state water managers to integrate the strategy.

“We thank Assemblymember Chris Ward for his leadership and vision in supporting next-gen water management and flood reduction efforts that will benefit residents statewide,” said Mel Katz, chair of the San Diego County Water Authority Board of Directors. “The legislation provides an innovative approach to help San Diego County and California thrive in the changing climate.”

Forecast-informed reservoir operations use weather predictions to advise dam operators about how much water to retain or release from reservoirs, enhancing their ability to handle whatever nature serves up while retaining as much water as possible in storage.

Many reservoirs in the West are strictly regulated based on historical averages of winter storms and spring runoff. Under existing rules, the highly variable rainfall from year to year is not directly considered. Complicating the problem, many current guidelines and practices were developed before satellites, radar and advanced numerical models significantly improved weather forecasts.

To address these challenges, researchers at Scripps Institution of Oceanography and elsewhere developed tools that provide weather forecasters with reliable notice of atmospheric rivers a week in advance. Advancing this research could have taken decades, but sophisticated prediction products have evolved in less than 10 years with funding by the San Diego County Water Authority and other water agencies statewide, along with state and federal support.

The Water Authority has partnered with SIO and the Scripps Center for Western Weather and Water Extremes at UC San Diego, to share and support best practices in FIRO, to increase research around atmospheric rivers and droughts, and develop strategies for mitigating flood risk and increasing water supply reliability

Few Strong Landfalling Atmospheric Rivers Reach California

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San Diego County Water Authority And its 24 Member Agencies

Water Authority Earns National Conservation Innovation Award

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The San Diego County Water Authority was recognized with a national award from the Alliance for Water Efficiency for programs that help county residents and businesses conserve water. The Water Authority earned the 2023 Utility Innovation Award for developing and deploying of one of the first and most comprehensive multi-benefit water-use efficiency incentive programs in the nation, in partnership with the County of San Diego.

 

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4S Ranch Water Reclamation Facility-CWEA 2022 Plant of the Year

Olivenhain Municipal Water District Marks Milestone Recycled Water Anniversary

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Water recycling reduces the need to import or develop additional drinking water supplies. It is a vital water management strategy to ensure a safe, reliable, and locally controlled water supply to support healthy environments, robust economies, and high quality of life.

Water and wastewater agencies in San Diego County are developing or expanding their water recycling infrastructure. Among those at the forefront is the Olivenhain Municipal Water District. OMWD marks a significant milestone in August: the 20th anniversary of its award-winning 4S Ranch Water Reclamation Facility, which began serving high-quality recycled water for irrigation in August 2003.

The Olivenhain Municipal Water District's award winning 4S Ranch Water Reclamation Facility celebrates its 20th anniversary in August 2023. Photo: Olivenhain Municipal Water District

The Olivenhain Municipal Water District’s award-winning 4S Ranch Water Reclamation Facility celebrates its 20th anniversary in August 2023. Photo: Olivenhain Municipal Water District

OMWD annexed the 4S Ranch and Rancho Cielo Sanitation Districts from the County of San Diego in 1998. OMWD also took ownership of a small wastewater treatment facility in 4S Ranch. This facility had the capability to treat 0.25 million gallons per day (MGD) of wastewater from the surrounding commercial center and condominium complex. Treated wastewater was disposed of by spraying it on nearby unimproved pastures.

Recognizing the significant development plans for the 4S Ranch area, OMWD expanded the capacity of the facility to 2.0 MGD. As part of this expansion, OMWD also incorporated additional treatment phases of filtration and ultraviolet disinfection, improving water quality. OMWD required area developers to install the entire recycled water infrastructure for their planned communities.

Today, the facility produces over one million gallons of recycled water per day. It is delivered to irrigation customers in the southeastern portion of OMWD’s service area for use at HOA common areas, schools, parks, streetscapes, and golf courses. Together with recycled water purchased from nearby water and wastewater agencies to serve customers in portions of Encinitas and Carlsbad, OMWD now serves up to 15 percent of its customers’ total water demand with recycled water.

“For 20 years, OMWD has proudly served 4S Ranch and neighboring communities with high-quality recycled water, reducing the use of drinking water for irrigation,” said OMWD Vice President Matthew Hahn. “As California continues to face water supply challenges, the expansion of our recycled water system strengthens our water supply reliability and promotes sustainable water management.

How water recycling helps build water reliability

OMWD serves up to 15% of its overall demand from recycled water treated through its award-winning 4S Ranch facility. Photo: Olivenhain Mu recycled water

OMWD serves up to 15% of its overall demand from recycled water treated through its award-winning 4S Ranch facility. Photo: Olivenhain Municipal Water District

Water recycling is the process of capturing and treating wastewater, for non-domestic purposes such as irrigation and industrial processes.

Water and wastewater agencies across San Diego County are developing or expanding their recycled water systems to reduce the need to import or develop other supplies.

Since 2003, OMWD has significantly increased its recycled water purchases through connections with neighboring agencies, including the City of San Diego, San Elijo Joint Powers Authority, Rancho Santa Fe Community Services District, and Vallecitos Water District. OMWD now serves over two and a half million gallons of recycled water every day. Each year, OMWD installs additional recycled water pipelines and converts more customers from potable water to recycled water.

By 2027, the volume of recycled water produced in the U.S. is projected to increase 37% from 4.8 billion gallons per day to 6.6 billion gallons per day, according to a recent survey by Bluefield Research.

OMWD leadership in developing water recycling

SLIDER OMWD Year in Review

In 2021, the Olivenhain Municipal Water District completed several replacement and upgrade projects at its 4S Ranch Water Reclamation Facility. Photo: Olivenhain Municipal Water District

As a founding member of the North San Diego Water Reuse Coalition, OMWD works with nine northern San Diego County water and wastewater agencies across jurisdictional boundaries to reduce the impact of water supply shortages on San Diego County’s $268 billion economy. This regional approach has proven successful in developing local projects as well as obtaining $9 million in funding, significantly reducing the costs of water recycling projects for North San Diego County water ratepayers.

In addition, the Coalition has also secured federal funding of $23.8 million to help cover costs for water reclamation projects through 2025.

Expanding capacity for the future

Water and wastewater agencies across San Diego County including OMWD are developing or expanding water recycling projects, because every gallon of recycled water reduces the need to import or develop other supplies. Photo: Olivenhain Municipal Water District recycled water

Water and wastewater agencies across San Diego County including OMWD are developing or expanding water recycling projects, because every gallon of recycled water reduces the need to import or develop other supplies. Photo: Olivenhain Municipal Water District

As it looks forward to the next 20 years, OMWD continues to expand its recycled water capacity. It began construction this summer on three recycled water pipelines near Calle Barcelona in Carlsbad and in Village Park in Encinitas. Once complete, OMWD can convert up to 27 meters to recycled water, offsetting 12.7 million gallons of potable water used annually for irrigation.

OMWD has long pursued alternative water supplies like recycled water, a reliable, drought-proof approach for complementing existing water sources.

The San Diego County Water Authority has supported the development of recycling projects for decades, through membership in groups such as the WateReuse Association and collaborative efforts to promote local reuse efforts. Approximately 35,000 acre-feet of recycled water is beneficially reused within the Water Authority’s service area annually, and the volume is expected to continue growing as new and expanded plants come online.

(Editor’s note: The Olivenhain Municipal Water District is one of the San Diego County Water Authority’s 24 member agencies that deliver water across the San Diego County region.)