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Escondido Discusses Rehabilitating Lake Wohlford Dam

/in , , /by /The Coast News Groupby Tigist Layne Mentioned: San Diego County Water Authority

The Escondido City Council met on June 3 to discuss options for rehabilitating Lake Wohlford Dam, instead of building a replacement dam, and to award contracts for the Lindley Reservoir Replacement Project.

The council heard a report on the possibility of rehabilitating the Lake Wohlford Dam, which was first constructed in 1895 as part of Escondido’s local water system, to address seismic deficiencies rather than replacing the dam altogether.

According to the report, replacing the dam would cost more than $46.4 million, an amount much greater than the 2012 preliminary cost estimate of $30 million. Furthermore, it would cost an estimated $3.5 million to offset known negative impacts to the environment.

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Regional Conveyance Study-Colorado River Aqueduct-RCS-primary-June 2020

Draft Study Highlights Region’s Water Conveyance Options

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A draft report released today by the San Diego County Water Authority shows that building a new conveyance system to transport regional water supplies from the Colorado River Quantification Settlement Agreement is cost-competitive with other long-term options for meeting the region’s water needs.

The draft Phase A report is under review by water officials across the region. The Water Authority’s Board of Directors is expected to decide whether to move to Phase B at its July 23 meeting.

“By releasing this draft report – along with an independent review of key financial assumptions – we are trying to spark a thoughtful dialogue about our region’s water future,” said Dan Denham, deputy general manager for the Water Authority. “Given the long lead time for major water infrastructure projects, it’s important that San Diego County wrestle with these complex questions today so we can control our own destiny tomorrow.”

The Phase A report is the result of technical and cost analysis by Black & Veatch Corp. and the economic analysis by Water Authority staff. The engineering firm conducted similar studies for the Water Authority dating back to 1996, assessing “single use” water-delivery projects in those studies. The current Phase A analysis looks at conveyance projects with multiple partnership possibilities and potential benefits for the environment, water agencies and others.

Two viable alternatives emerge

Three potential pipeline routes were studied in Phase A, and the draft report says two alternatives (3A and 5A) are cost-competitive with other options, such as relying more on Metropolitan Water District of Southern California or developing additional local supplies.

Phase A takes a conservative approach to cost protections, by not factoring in potential partnerships or other sources of funds. However, partnerships and other agreements could significantly reduce the cost and enhance the value of a regional conveyance system. Phase B would include more detailed analysis of potential partnerships and funding opportunities and more details about projected costs from MWD.

“A decision about the Regional Conveyance System cannot be made in the abstract,” said Kelly Rodgers, director of the Water Authority’s Colorado River Program. “It must be made based on a comparison of the available alternatives, and we look forward to additional analysis and perspectives from our member agencies in the weeks ahead.”

The Water Authority currently pays MWD to transport QSA water through the Colorado River Aqueduct to San Diego. The regional conveyance system would be designed to convey the QSA water, which in 2021 will reach its full amount of 280,000 acre-feet of water annually. The current Water Transfer Agreement between the Imperial Irrigation District and the Water Authority continues to 2047. Both agencies can agree to extend the transfer another 30 years to 2077.

Conveyance routes would connect to All-American Canal

Each of the potential conveyance routes would connect to the tail end of the All-American Canal where it meets the Westside Main Canal in the southwest corner of Imperial Valley.

Two of the routes would follow a southern corridor between the Imperial Valley and San Diego, with one route over the mountains paralleling the U.S./Mexico border and the other tunneling through the mountains. Both routes would end at the San Vicente Reservoir in Lakeside.

The third and northernmost route would follow the Westside Main Canal toward the Salton Sea, then flow past Borrego Springs, and through the mountains. It would eventually connect to the Water Authority’s Twin Oaks Valley Water Treatment Plant in San Marcos.

Draft report findings

  • The region will continue to need QSA water through 2112.
  • All three RCS alternatives are viable from a technical and engineering perspective.
  • Alternatives 3A and 5A are economically competitive and provide long-term reliability and low-cost water to the region.
  • Alternative 5C is not economically competitive with Alternatives 3A and 5A and will not be recommended for further study.
  • Alternatives 3A and 5A could be integrated without major changes to current Water Authority operations.
  • Potential multi-agency, multi-use partnerships and other agreements could significantly reduce the cost and enhance the value of each RCS alternative and provide regional benefits to San Diego, California and the Southwest.

To read the report, go to https://www.sdcwa.org/colorado-river-supplies-management.

CWA Ratifies Contracts, Accepts Notice of Completion for Pipeline 5 Repairs

/in , , /by /Fallbrook Village Newsby Joe Naiman Quoted: San Diego County Water Authority

Eventually the San Diego County Water Authority will develop and implement a long-term fix for the vulnerability of the three SDCWA pipelines in Moosa Canyon, but the short-term fix for Pipeline 5 is now complete.

A unanimous CWA board vote, Thursday, May 28, ratified four contracts approved administratively by CWA General Manager Sandra Kerl and authorized Kerl to accept the work as complete.

“Earlier this month, in May, we shut down Pipeline 5 to remove the bulkheads and we resumed normal operations on May 8,” Neena Kuzmich, engineering manager of CWA, said.

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San Diego and Tijuana Announce Plans to Improve Tijuana River Water Treatment

/in , , /by /KPBS-FM/TV (City News Service)by City News Service

Both United States and Mexican officials announced separate plans Tuesday to upgrade Tijuana River wastewater facilities.

The international river has been a longtime problem for residents of Imperial Beach and Tijuana, as sewage and trash from the river have spilled into the Pacific Ocean for decades, often closing beaches near the border and damaging natural habitats along the river.

The Tijuana River straddles the U.S.-Mexico border, picking up sewage and trash along its winding and cross-border path. Over the last 40 years water- treatment facilities have been overrun with sewage and trash, especially during the rainy season.

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OMWD Announces Virtual Neighborhood Meeting on June 11 about Pipeline Project along Encinitas Boulevard and Manchester Avenue

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Encinitas, Calif. — The public is invited to attend a virtual public meeting via Zoom on June 11 to learn about the potable water pipeline project that Olivenhain Municipal Water District will begin in fall 2020 at the intersection of Rancho Santa Fe Road and Encinitas Blvd.

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East County Advanced Water Purification Program Moves Forward

/in , , /by /WaterWorld

The East County Advanced Water Purification Joint Powers Authority Board of Directors unanimously approved water and wastewater service agreements this week, moving this significant drinking water project one-step closer to reality. These water and wastewater agreements are critical to the JPA’s eligibility for key program financing opportunities.

Water purchase agreements were approved between the East County AWP JPA and Padre Dam Municipal Water District and between the East County AWP JPA and Helix Water District. The water purchase agreements cover the terms and conditions for water delivery volumes and water pricing for the purchase of purified water by Helix as well as Padre Dam’s purchase of purified water and Title 22 recycled water. The water service agreement was previously approved unanimously by Padre Dam’s Board of Directors on May 20, 2020. It is anticipated that Helix Water District will consider approval of the agreement at a Special Board meeting scheduled on May 27, 2020.

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The Problem America Has Neglected for Too Long: Deteriorating Dams

/in , , /by /National Geographicby Maya Wei-Haas

Aging and undermaintained infrastructure in the United States, combined with changing climate over the coming decades, is setting the stage for more dam disasters like the one that struck Midland, Michigan, last week.

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San Diego Region on Track to Receive $15 Million for Water Projects

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Several regional water supply projects in San Diego County are on track to receive a total of more than $15 million from the California Department of Water Resources, pending a final decision on the grants this summer.

Money for the projects has been recommended by DWR, which will make the awards after a public comment period.

In San Diego County, the grant funds would support local agencies to advance conservation, environmental enhancements, water purification and other initiatives.

Funding for regional water projects

The San Diego County Water Authority submitted the funding request on behalf of the San Diego Integrated Regional Water Management Region, or IRWM. The San Diego IRWM Program began in 2005 as an effort by water retailers, wastewater agencies, stormwater and flood managers, watershed groups, the business community, tribes, agriculture, and nonprofit stakeholders to improve water resources planning in the region.

“The IRWM funding will provide much-needed funding over the next several years to implement a variety of local water supply projects, water use efficiency measures, along with a disadvantaged community project in the City of National City,” said Water Authority General Manager Sandra L. Kerl.

Kerl cited the “extraordinary effort” by the San Diego IRWM Regional Water Management Group and the Regional Advisory Committee for their work over the past year to make the $15,336,000 grant possible.

The statewide IRWM Program is supported by bond funding provided by the DWR to fund competitive grants for projects that improve water resources management.

Regional projects recommended for grant funds

  • San Diego Grant Administration, San Diego County Water Authority – Public Agency $920,180
  • 2020 Regional Water Use Efficiency Programs, San Diego County Water Authority – Public Agency Water Conservation $1,440,000
  • Paradise Valley Creek Water Quality and Community Enhancement, City of National City – Public Agency Flood Damage Reduction $3,681,056
  • North City Pure Water Facility Influent Pump Station and Conveyance Pipeline, City of San Diego, Public Agency Water Supply – Recycled Water $1,477,600
  • San Elijo Stormwater Capture & Reuse San Elijo Joint Powers Authority, Public Agency Water Supply – Recycled Water $1,195,000

Enhancing water stewardship

On November 4, 2014, California voters approved Proposition 1, the Water Quality, Supply, and Infrastructure Improvement Act of 2014.

Proposition 1 authorized $510 million in IRWM funding. Funds are allocated to 12 hydrologic region-based funding areas, including the San Diego Region.

The Proposition 1 IRWM Grant Program, administered by DWR, provides funding for projects that help meet the long-term water needs of the state, including:

  • Assisting water infrastructure systems adapt to climate change;
  • Providing incentives throughout each watershed to collaborate in managing the region’s water resources and setting regional priorities for water infrastructure; and
  • Improving regional water self-reliance, while reducing reliance on Sacramento-San Joaquin Delta.

Thousands of Run-Down US Dams Would Kill People If They Failed, Study Finds

/in , , /by /The Guardianby Emily Holden

More than 15,000 dams in the US would likely kill people if they failed, and at least 2,300 of them are in poor or unsatisfactory condition, according to recent data from the federal government’s National Inventory of Dams.

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After 30 Years and $330 Million Spent, Water Agency Shelves Las Vegas Pipeline Plan

/in , , /by /Reno Gazette Journal by Benjamin Spillman

Citing conservation gains and a third straw to the bottom of Lake Mead, the Southern Nevada Water Authority on Thursday voted to shelve a proposal for a multi-billion pipeline that would have moved water from Northern and Eastern Nevada to Las Vegas.

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