You are now in Facilities & Operations News category.

The Helix Water District's Tunnel Hill storage tank rehabilitation project took approximately two years to complete. Photo: Helix Water District

Tunnel Hill Water Tanks Rehabbed and Upgraded by Helix Water District

/in , /by

The Helix Water District recently completed an extensive rehabilitation of its Tunnel Hill water storage tanks. The two tanks are above Interstate 8 near the Los Coches freeway exit. The tanks play an important role in the water infrastructure system by storing and providing water to thousands of Helix Water District customers in Lakeside and El Cajon.

The project took two years to complete in several phases. The first phase of the project involved stripping the exterior of the smaller and newer, reinforced concrete tank. The new, natural concrete finish does not require paint and will reduce long-term maintenance costs.

The larger steel Tunnel Hill water tank received a corrosion-resistant aluminum dome roof. Photo: Helix Water District

The larger steel Tunnel Hill water tank received a corrosion-resistant aluminum dome roof. Photo: Helix Water District

Next, the larger steel tank received new paint and a corrosion-resistant aluminum dome roof. The height of the tank was extended by five feet to improve the tank’s performance and safety in an earthquake, especially to protect nearby neighborhoods. The exterior of the steel tank was recoated.

Both tanks received new interior coatings to prevent corrosion and were replumbed with flexible fittings to prevent breaks and keep the tanks connected during an earthquake.

Asset Management

Both tanks received new interior coatings to prevent corrosion and were replumbed with flexible fittings to prevent breaks and keep the tanks connected during an earthquake. Photo: Helix Water District

Both tanks received new interior coatings to prevent corrosion and were replumbed with flexible fittings to prevent breaks and keep the tanks connected during an earthquake. Photo: Helix Water District

“The Tunnel Hill Tank improvements are a great example of successful asset management,” said Helix Water District Board President Kathleen Coates Hedberg. “It would have cost over $10 million dollars if we had to replace the tanks. However, rehabilitating cost $3.5 million dollars. Our District is over 100 years old, and it is important to stay on top of our aging water system. We continuously monitor and manage our infrastructure because it’s the best long-term solution for our customers.”

The completed improvements will extend the life of the Tunnel Hill tanks for another 50 to 75 years.

Watch video of the Tunnel Hill Tank rehabilitation project in progress

Vital Roles In Water Infrastructure

Tanks are the most visible parts of water infrastructure and play a vital role in supplying water for the daily needs of residents and businesses, as well as for emergencies. The Helix Water District operates and maintains 25 tanks across its 50-square-mile service area. Proactive rehabilitations are less expensive than the construction of a new tank.

The height of the larger tank was extended by five feet to improve the tank’s performance and safety in an earthquake, especially to protect nearby neighborhoods. Photo: Helix Water District

The height of the larger tank was extended by five feet to improve the tank’s performance and safety in an earthquake, especially to protect nearby neighborhoods. Photo: Helix Water District

Eight additional water storage tanks were inspected and repaired in 2022. In addition, as part of its proactive maintenance, crews replaced 11,560 feet of cast-iron pipeline and surveyed 14,728 feet of pipeline route for design.

The district pulled electromagnetic detectors through 12,000 feet of the 36-inch diameter pipeline that delivers water from the Colorado River and Northern California to the R.M. Levy Water Treatment Plant in Lakeside. The detectors measure the pipe wall and identify weak points, facilitating faster, more precise and less expensive repairs. Based on the data, the Helix Water District replaced 805 feet of pipe and installed 34 steel plates and 10 new access manways.

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

The Sweetwater Reservoir will offer free fishing on Sundays throughout 2023. Photo: Sweetwater Authority

Sweetwater Reservoir Open to Free Fishing on Sundays in 2023  

/in , /by

The Sweetwater Reservoir now offers “Free Fishing Sundays” through the Sweetwater Authority’s Reservoir Recreation Program. Free access weekly on Sundays will continue through the end of 2023.

Located at the eastern edge of Bonita, Sweetwater Reservoir’s Recreation Program is easily accessible to the water agency’s customers. The program offers outdoor activities including 2.5 miles of shoreline fishing, and a riding and hiking trail operated by the County of San Diego.

Beginning March 1, program hours are 7 a.m. to 5 p.m. The entrance is at 3203 Summit Meadow Road in Bonita. A valid California Department of Fish and Wildlife Fishing License is required. Regular fishing fees are still in effect on Fridays, Saturdays, and Mondays.

New program, free access

The new program extends this opportunity due to the recent closure of Loveland Reservoir to recreational use.

“We recognize that the recent closure of Loveland Reservoir has impacted recreation access,” said Authority Board Chair Hector Martinez. “We hope that by offering free access to the program on Sundays, customers and local residents will come out and enjoy these outdoor recreational activities located right here in our own community.”

A California Fishing License is required, and the Authority has established rules to ensure the protection of the water supply and sensitive habitats surrounding its reservoirs. For more information on current hours, fees, and safety, visit www.sweetwater.org/fishing.

San Diego County lakes prized for freshwater fishing

A happy angler shows off his catch at the Sweetwater Reservoir. Photo: Fishbrain.com Free fishing

A happy angler shows off his catch at the Sweetwater Reservoir. Photo: Fishbrain.com

San Diego County’s freshwater fishing in area reservoirs and lakes managed by the region’s water agencies attracts experts and beginners alike. Eighteen of the County’s 24 reservoirs allow fishing, including the 960-acre Sweetwater Reservoir.

According to FishedThat.com, Sweetwater Reservoir is rated among San Diego County’s top three freshwater fishing locations. Fish available in the reservoir include carp, largemouth bass, bluegill, red-eared sunfish, channel catfish, and crappie.

Fifth-grade students in the Sweetwater service area were also provided free fishing passes for the year through their schools.

Primarily a local water supply for the Sweetwater Authority’s 200,000 customers in National City, Chula Vista, and Bonita, the agency has created recreational opportunities at the reservoir including fishing programs and a riding and hiking trail, operated by the County of San Diego.

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

shutdown season-First Aqueduct-maintenance shutdown

First Aqueduct Maintenance Shutdown Runs Feb. 27-March 8

/in , /by

(Editor’s Update: Work started Monday, February 27, as scheduled)

The final shutdown for scheduled maintenance of the San Diego County Water Authority’s First Aqueduct is scheduled to begin February 27. The shutdown will run through March 8, allowing crews to reline portions of the historic aqueduct and perform regular maintenance work that ensures a safe and reliable water supply for the region. Portions of the First Aqueduct were shut down earlier this year for similar work, as part of a proactive approach to saving on future maintenance or replacement costs.

The Water Authority and its member agencies are coordinating to minimize impacts to residents and businesses, while servicing pipelines that are more than 65 years old.

Customers of these affected retail agencies during the final planned shutdown should check with their local water utility if they have questions about localized impacts: Fallbrook Public Utility District, Rainbow Municipal Water District, Rincon del Diablo Municipal Water District, Vallecitos Water District, Valley Center Municipal Water District, Vista Irrigation District, Helix Water District, Yuima Municipal Water District, and the cities of San Diego, Poway and Ramona.

“Taking care of this critical infrastructure during the shutdown season extends the life of the First Aqueduct and helps to avoid both water emergencies and the high costs of emergency work,” said Eva Plajzer, the Water Authority’s director of operations and maintenance. “Maintaining our water delivery system in coordination with our member agencies ensures the continued safe and reliable supply that serves the region’s 3.3 million residents and our $268 billion economy.”

Maintenance work on pipelines is scheduled during low-demand periods to minimize impacts on water service.

The historic First Aqueduct was constructed in the 1940s (Pipeline 1) and in the 1950s (Pipeline 2). On November 28, 1947, the first Colorado River water flowed south from Riverside County for 71 miles into the City of San Diego’s San Vicente Reservoir via the First Aqueduct.

The Water Authority’s Asset Management Program is a key element of providing safe and reliable water supplies to the region. The agency continually assesses and inspects its 310 miles of large-diameter pipelines, which provide treated and untreated water to 24 member agencies in San Diego County. The program is widely recognized for pioneering work, including a patented inspection device.

As assets age, the Water Authority proactively replaces and repairs them to minimize impacts to member agencies and the public. Investments in the latest inspection technologies – including electromagnetic scanning, robotic inspections and 3D tunnel inspections – help the Water Authority’s asset management team detect defects in pipelines and related facilities.

(Editor’s Note: The Fallbrook Public Utility District, Rainbow Municipal Water District, Rincon del Diablo Municipal Water District, Vallecitos Water District, Valley Center Municipal Water District, Vista Irrigation District, Yuima Municipal Water District, Helix Water District, Ramona Municipal Water District, and the cities of San Diego and Poway, are 11 of the San Diego County Water Authority’s 24 member agencies that deliver water across the metropolitan San Diego region.)

If a leak is confirmed, then a repair is scheduled and completed within days of discovery and during normal working hours. Photo: Otay Water District Leak prevention

Annual Leak Detection Program Gets Underway in Otay Water District

/in , /by

As part of its annual preventative maintenance program to safeguard its water supply and reduce water loss, the Otay Water District will conduct leak inspections of its pipeline system beginning January 30. Inspections are expected to continue until April 28.  The District’s contractor, Utility Services Associates, will inspect approximately 171 miles of potable water mains in Spring Valley and Jamul, along with potable and recycled water mains in areas of Chula Vista.

Minor water leaks account for more than a trillion gallons of water wasted each year in homes across the United States. According to the EPA Fix-A-Week-Leak website, each average household with unaddressed leaks can account for 10,000 gallons of water loss every year, enough to wash 300 loads of laundry.

Since 2013, the proactive Leak Detection Program has identified 292 leaks that have been repaired by the District, resulting in an average annual savings of $54,000 per year from reduced water losses. Graphic: Otay Water District leak prevention

Since 2013, the proactive Leak Detection Program has identified 292 leaks that have been repaired by the District, resulting in an average annual savings of $54,000 per year from reduced water losses. Graphic: Otay Water District

For example, the EPA reports a leak just one-32nd of an inch in diameter (about the thickness of a dime) can waste 6,300 gallons of water per month.

Since 2013, the proactive Leak Detection Program has identified 292 leaks that have been repaired by the District, resulting in an average annual savings of $54,000 per year from reduced water losses.

“The Otay Water District conducts inspections annually in different communities we serve,” said Otay System Operations Manager Jake Vaclavek. “It is more critical than ever to insure we are not wasting water as we cope with our state’s ongoing megadrought.”

Workers conduct inspections weekdays through April

An effective Leak Detection and Repair Program is one of the main components for water conservation and an important part of asset management. Photo: Otay Water District leak prevention

An effective leak detection and repair program is one of the main components for water conservation and an important part of asset management. Photo: Otay Water District

Customers may see workers inspecting the meter in front of their home or business, typically between 7 a.m. and 5 p.m., Monday through Friday. Weekend and night work may also be required. Inspections can range from a few minutes to a full day.

Inspection workers will wear a Utility Services Associates logo and carry company identification. They will not need access to the homes or property of customers. They may contact customers if they need to momentarily shut off their water supply for further testing. Water supply will not be shut off without permission from someone at the home or property.

The Otay Water District will continue its annual leak inspection through April. Photo: Otay Water District

Workers might lift water meter covers, inspect, and attach equipment to meters or valves. If they suspect a leak, the Otay Water District will contact the customer and advise them of the potential leak.

For questions on the Otay Water District Leak Detection Program, contact customer service at (619) 670-2222.

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

Historic First Aqueduct-asset management-Pipeline 1-maintenance

First Aqueduct Maintenance Shutdown Runs Jan. 23-Feb. 1

/in , /by

The San Diego County Water Authority’s First Aqueduct will be shut down periodically over the next three months for maintenance projects to ensure a safe and reliable water supply for the region. Two shutdowns on the First Aqueduct are scheduled from January through March, when portions of the aqueduct will be relined, along with other maintenance.

The Water Authority and its member agencies are coordinating to minimize impacts to residents and businesses, while servicing pipelines that are more than 65 years old.

Customers of these affected retail agencies during the Jan. 23-Feb. 1 shutdown should check with their local water utility if they have questions about localized impacts: Fallbrook Public Utility District, Rainbow Municipal Water District, Rincon del Diablo Municipal Water District, Vallecitos Water District, Valley Center Municipal Water District, Vista Irrigation District, and the Yuima Municipal Water District.

Proactive Asset Management Program

“Work to proactively upgrade and maintain our water delivery system in coordination with our member agencies ensures the continued safe and reliable supply that serves the region’s 3.3 million residents and our $268 billion economy,” said Eva Plajzer, the Water Authority’s director of operations and maintenance. “Taking care of this critical infrastructure during the shutdown season extends the life of the aqueduct and reduces the cost of replacement.”

Maintenance shutdown during low-demand periods

Maintenance work on pipelines is scheduled during low-demand periods to minimize impacts on water service.

The other scheduled shutdown on the First Aqueduct is February 27 to March 8, which will also impact the Helix Water District and the cities of San Diego, Poway and Ramona.

First Aqueduct-Asset Management-Historic First Aqueduct-Shutdown

By order of President Franklin D. Roosevelt, the U.S. Navy built the San Diego Aqueduct to deliver Colorado River water to San Diego. Photo: San Diego County Water Authority archives

Historic First Aqueduct

The historic First Aqueduct was constructed in the 1940s with Pipeline 1 and in the 1950s with Pipeline 2. On November 28, 1947, the first Colorado River water flowed south from Riverside County for 71 miles into the City of San Diego’s San Vicente Reservoir via the First Aqueduct.

The Water Authority’s Asset Management Program is a key element of providing safe and reliable water supplies to the region. The agency continually assesses and inspects its 310 miles of large-diameter pipelines, which provide treated and untreated water to 24 member agencies in San Diego County. The program is widely recognized for pioneering work – including a patented inspection device – that promotes water affordability by avoiding costly unplanned disruptions in service.

As assets age, the Water Authority proactively replaces and repairs them to minimize impacts to member agencies and the public. Investments in the latest inspection technologies, including electromagnetic scanning, robotic inspections and 3D tunnel inspections help the Water Authority’s asset management team detect defects in pipelines and related facilities. Identifying potential issues early avoids more costly fixes later.

For more information about pipeline management, go to: www.sdcwa.org/projects-programs/programs/asset-management/.

(Editor’s Note: The Fallbrook Public Utility District, Rainbow Municipal Water District, Rincon del Diablo Municipal Water District, Vallecitos Water District, Valley Center Municipal Water District, Vista Irrigation District, Yuima Municipal Water District, Helix Water District and the cities of San Diego, Poway and Ramona are 11 of the San Diego County Water Authority’s 24 member agencies that deliver water across the metropolitan San Diego region.)

FRS II- Mission Trails- Flow Control Facility

Mission Trails Water Project Completed; Park Trails Reopened

/in , /by

One of the San Diego County Water Authority’s large-scale capital improvement projects – the Mission Trails Flow Regulatory Structure II and Flow Control Facility (FRS II) – is now completed. The project upgraded the Water Authority’s untreated water supply system by improving the delivery of water to treatment plants serving the central and southern areas of San Diego County.

The FRS II project, which began construction in spring 2020, includes a new 5-million-gallon underground covered reservoir, a flow control facility and pipeline interconnections. The reservoir is covered with soil and vegetation, except for several access hatches and vents that allow for air movement inside the reservoir. FRS II is the Water Authority’s second underground water tank located in Mission Trails Regional Park – the other one, located just west of the new one, is a treated water tank. The two tanks work to efficiently move water through the region, ultimately to customer’s homes and businesses.

“The Water Authority thanks the community for their patience while crews work to successfully build this important water delivery project,” said Michael Heu, the Water Authority’s construction manager for the project. “With the project completed, we are pleased to reopen the park trails which were previously impacted due to construction activity. The public’s safety was a top priority during this work.”

During construction, the Water Authority worked in partnership with key stakeholders, community partners, and the public to keep them well-informed about project status and park trail closures. Key construction highlights include:

  • Approximately 150,000 cubic yards of dirt excavated, with only 20,000 cubic yards exported
  • More than 100 concrete pours deposited 6,000 cubic yards of reinforced concrete
  • 100 columns inside the FRS II support the roof

The FRS II further enhances the Water Authority’s regional water delivery system – a system capable of delivering 900 million gallons of water each day to its 24 member agencies. The new Flow Control Facility delivers from 1 to 140 cubic feet per second of water to member agencies downstream of Mission Trails Regional Park.

Commitment to the Environment

While the Mission Trails Regional Park is known for its 8,000 acres of open space that draw hikers and outdoor enthusiasts, major sections of the Water Authority’s regional water delivery system run underground in the western portion of the park. When construction is required for pipeline maintenance or upgrading water facilities, the Water Authority makes minimizing the impact on the environment a top priority and the construction of the FRS II was no different.

Under the 2006 Good Neighbor agreement with the Mission Trails Regional Park Citizen’s Advisory Committee, the Water Authority is committed to rehabilitating any native habitats and open spaces in the park that are disturbed during construction to their natural state.

Since construction of the FRS II required some removal of native plants, the Water Authority pledged to plant and restore native vegetation of about 17 acres in the park.

Efforts for Revegetation and Hydroseeding

A critical part of successfully restoring the plant life began with mapping the plant habitats and soil types in the construction areas, then harvesting seeds from the native plants.

Before construction began in 2020, approximately 225 pounds of live seed were gathered from within the park and taken to a dedicated nursery. From these seeds, more than 22,000 native plants were grown and are currently being planted over a 17-acre area.

“The seeds harvested from the park prior to construction were twice as fertile than expected, which led to great success in growth,” said Summer Adelberg, Water Authority Principal Water Resource Specialist, who leads the revegetation efforts for the project. “We are pleased with the large number of plants already established throughout the project.”

Monitoring and Maintenance of Restored Areas

While water has already begun flowing through the underground storage tank structure, the restoration work and regrowth in the construction areas is far from over.

Once the planting is complete, each restored site will undergo a 120-day plant establishment period where the areas will be watered, weeded and maintained. That will be followed by a five-year maintenance and monitoring period to ensure the successful growth of the new plants.

In a few years, when revegetation has succeeded, you could be standing on top of nearly five million gallons of water and the only evidence of the massive underground tank will be small service hatches surrounded by native plants.

Historic First Aqueduct-asset management-Pipeline 1-maintenance

Work Begins on Water Authority’s Historic First Aqueduct

/in , /by

The San Diego County Water Authority’s First Aqueduct will be shut down periodically over the next four months for maintenance projects to ensure a safe and reliable water supply for the region. A series of three shutdowns on the First Aqueduct is scheduled from December through March, when portions of the aqueduct will be relined, along with other maintenance.

The Water Authority and its member agencies are coordinating to minimize impacts to residents and businesses, while servicing pipelines that are more than 65 years old.

Customers of these affected retail agencies during the Dec. 5-14 shutdown should check with their local water utility if they have questions about localized impacts: Fallbrook Public Utility District, Rainbow Municipal Water District, Rincon del Diablo Municipal Water District, Vallecitos Water District, Valley Center Municipal Water District, Vista Irrigation District, and the Yuima Municipal Water District.

Proactive Asset Management Program

“Proactively managing our water delivery system in coordination with our member agencies ensures we continue to provide a safe and reliable supply that serves the region’s 3.3 million residents and our $240 billion economy,” said Eva Plajzer, the Water Authority’s director of operations and maintenance. “It requires an extraordinary amount of work each fall and winter during the shutdown season to take care of this critical infrastructure.”

Maintenance work on pipelines is scheduled during low-demand periods to minimize impacts on water service. The other scheduled shutdowns on the First Aqueduct are January 23 to February 1 and February 27 to March 8. The February 27 to March 8 shutdown will also impact the Helix Water District and the cities of San Diego, Poway and Ramona.

Historic First Aqueduct

The historic First Aqueduct was constructed in the 1940s with Pipeline 1 and in the 1950s with Pipeline 2. On November 28, 1947, the first Colorado River water flowed south from Riverside County for 71 miles into the City of San Diego’s San Vicente Reservoir via the First Aqueduct.

First Aqueduct-Asset Management-Historic First Aqueduct-Shutdown

By order of President Franklin D. Roosevelt, the U.S. Navy built the San Diego Aqueduct to deliver Colorado River water to San Diego. Photo: San Diego County Water Authority archives

Asset Management Program

The Water Authority’s Asset Management Program is a key element of providing safe and reliable water supplies to the region. The agency continually assesses and inspects its 310 miles of large-diameter pipelines, which provide treated and untreated water to 24 member agencies in San Diego County. The program is widely recognized for pioneering work – including a patented inspection device – that promotes water affordability by avoiding costly unplanned disruptions in service.

As assets age, the Water Authority proactively replaces and repairs them to minimize impacts to member agencies and the public. Investments in the latest inspection technologies, including electromagnetic scanning, robotic inspections and 3D tunnel inspections help the Water Authority’s asset management team detect defects in pipelines and related facilities. Identifying potential issues early avoids more costly fixes later.

(Editor’s Note:The Fallbrook Public Utility District, Rainbow Municipal Water District, Rincon del Diablo Municipal Water District, Vallecitos Water District, Valley Center Municipal Water District, Vista Irrigation District, and the Yuima Municipal Water District are seven of the San Diego County Water Authority’s 24 member agencies that deliver water across the metropolitan San Diego region.)

Pipeline 5-Shutdown-Shutdown Season-Asset Management

“Shutdown Season” for Regional Aqueducts in San Diego County

/in , /by

Sections of the regional aqueducts in San Diego County will be shut down over the next six months for maintenance projects to ensure a safe and reliable water supply for the region. The San Diego County Water Authority and its member agencies are coordinating on the annual “shutdown season” to minimize impacts to residents and businesses, who are not expected to face service disruptions.

Starting October 16, a portion of Pipeline 5 will be out of service for 10 days to accommodate annual maintenance on the entire untreated water system and to prepare for rehabilitation of other sections of the pipeline. The Water Authority has worked for months to coordinate with the affected retail water agencies: Olivenhain Municipal Water District, San Dieguito Water District, Santa Fe Irrigation District, Helix Water District, Sweetwater Authority, and the cities of San Diego, Oceanside, Ramona, Poway and Escondido. Customers should check with their water utility if they have questions about localized impacts.

Proactive asset management – regional aqueducts and Pipeline 5

The Pipeline 5 work will rehabilitate about 5,000 feet of 96-inch diameter prestressed concrete cylinder pipe by inserting and securing a steel pipe liner. This portion of the pipeline is within the City of San Marcos, between North Twin Oaks Valley Road and the Water Authority’s Twin Oaks Water Treatment Plant. When completed, approximately 50 miles, or 61% of the Water Authority’s existing prestressed concrete cylinder pipe will be relined.

“Proactive asset management and coordination with our member agencies ensures that the region’s major water infrastructure reliably serves the region’s 3.3 million residents,” said Eva Plajzer, the Water Authority’s director of operations and maintenance. “We have worked with our member agencies for several months to minimize any impacts to residents and businesses.”

Safe and reliable water supplies

The Water Authority’s Asset Management Program is a key element of providing safe and reliable water supplies to the region. The agency continually assesses and inspects its 310 miles of large-diameter pipelines, which provide treated and untreated water to 24 member agencies in San Diego County. The program is widely recognized for pioneering work – including a patented inspection device – that promotes water affordability by avoiding costly unplanned disruptions in service. Maintenance work is scheduled during low-demand periods to minimize impacts on water service.

Constructed in 1982, Pipeline 5 is a vital component of the Water Authority’s regional water infrastructure system, delivering untreated supplies from Lake Skinner in southwest Riverside County to the Lower Otay Water Treatment Plant in southern San Diego County.

In addition to the October upgrades on Pipeline 5, a series of three shutdowns on the Water Authority’s First Aqueduct is scheduled from December through April, when portions of the aqueduct will be relined, along with other maintenance.

(Editor’s note: The Olivenhain Municipal Water District, San Dieguito Water District, Santa Fe Irrigation District, Helix Water District, Sweetwater Authority, and the cities of San Diego, Oceanside, Ramona, Poway and Escondido are 10 of the San Diego County Water Authority’s 24 member agencies that deliver water across the metropolitan San Diego region.)

Fallbrook Public Utility District changes the painted numbers on its Rattlesnake Tank to reflect the year incoming seniors at Fallbrook High School will graduate. Photo: Fallbrook Public Utility District

Rattlesnake Tank Gets Class of 2023 Makeover

/in , /by

The Fallbrook Public Utility District’s water storage tank uphill from South Mission Road has received a fresh set of painted numbers the past 40 years, but not everyone knows the story behind the annual makeover.

FPUD crews change the painted numbers on the tank to reflect the year incoming seniors at Fallbrook High School will graduate. A two-person team made up of district employees Colter Shannon (who also did it last year) and Martin Serrano performed the August task, painting over the “22” and changing it to “23” to welcome the graduating class of 2023.

It took district staff about five hours to paint the 25-foot-tall numbers onto the 3.6 million-gallon tank. Staff compressed the job, through the magic of time-lapse video, to about eight seconds.

“Parents and Fallbrook High seniors anxiously await the painting of the tank and begin calling the office early in June to find out when we’re doing it,” said Noelle Denke, FPUD public affairs officer. “This year, it’s especially exciting for them because so many of them are back on campus and need something to look forward to.”

Prior to painting the tank about four decades ago, Fallbrook High seniors would climb up the hill in the middle of the night as a traditional dare, scale the tank and then paint it themselves.

Because their annual antics took place at a significant height and in the dark, FPUD staff became concerned for student safety. Workers first tried installing a fence to prevent access by the yearly stealth painting crew.

The fence failed to deter the enterprising students. Instead, they began jumping the fence later at night. District officials struck a deal with the students. If they stopped risking their safety for the dare, FPUD would safely paint the tank yearly to commemorate them.

“We’ve been doing it ever since,” said Denke.

A 25-foot salute to Fallbrook High’s graduating seniors   

Rattlesnake Tank

One of the last attempts by Fallbrook High School students to paint the tank themselves in 1981. Photo: Fallbrook Public Utility District

Since the tank shares the space with several cell towers, Fallbrook Public Utility District arranges with them to power down their towers. Then crews safely hoist themselves up to the tower and get to work painting.

Rattlesnake Tank was built in the early 1950s and is one of Fallbrook’s oldest and most visible water tanks.

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

Hauck Mesa Storage Reservoir

Hauck Mesa Storage Reservoir Moving to Completion

/in , /by

The San Diego County Water Authority Hauck Mesa Storage Reservoir project in North San Diego County reached a major milestone in late April when crews poured the concrete roof of the new prestressed concrete water tank. The major construction project, which began in March 2021, will improve drinking water supply reliability for the county.

The project began with the demolition of an abandoned steel tank, and includes construction of an isolation vault and an underground flow control facility, in addition to the new 2.1 million-gallon water tank connected to the Valley Center Pipeline. The project is expected to be completed by November 2022.

Improved flexibility with Hauck Mesa Reservoir

The new Hauck Mesa Storage Reservoir will increase operational flexibility by balancing the flow of treated water between the agency’s first and second aqueducts as well as ensure water deliveries can be maintained even if power supplies are interrupted.

The walls of the new tank are about 60 feet tall, will be stained a forest green color to blend in with the natural landscape, and are made of prestressed, or wire wrapped, concrete. Construction Manager Emma Ward-McNally said that the prestressed technology “will maintain the tank walls in permanent compression, allowing the tank to accommodate seismic events while remaining watertight.”

Next steps for the project include the wire wrapping of the water tank, applying green-tinted shotcrete to the tank walls, installation of mechanical components within the flow control facility, system commissioning, and paving of the project site and access road.

Asset management

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 $240 billion economy and the quality of life for 3.3 million residents. 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.

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.