You are now in Colorado River Basin News category.

Colorado River Proposal-April 2023-USBR-San Diego County Water Authority-IID

Water Authority Supports Talks on Fed Draft Colorado River Proposal

The San Diego County Water Authority supports a consensus-based approach for long-term solutions to water supply issues in the Colorado River Basin. The U.S. Bureau of Reclamation on April 11 released a draft environmental document that considers changes to near-term operations on the Colorado River, including potential reductions in water supplies for California and across the Lower Colorado River Basin.

Colorado River Proposal

Reclamation’s draft Supplemental Environmental Impact Statement (SEIS) analyzes two alternatives, plus a no-action alternative, to protect critical elevations at Lakes Mead and Powell, the two reservoirs California depends on for its river supplies. Both reservoirs have declined due to unprecedented low levels from more than two decades of drought.

The release of the draft SEIS, which would modify the set of operating guidelines that manage river operations through 2026, comes even as heavy snows this winter signal some relief on the river.

Collaboration and consensus-based approach

“While this winter’s storms delivered an incredible snowpack, the release of the draft SEIS highlights that we need to continue to work with all Basin states, the tribes and Mexico toward a consensus-based approach that provides real and lasting solutions for all water users,” said Dan Denham, deputy general manager for the San Diego County Water Authority.

The first of the two action alternatives in the draft SEIS acknowledges the priority system for water rights under existing agreements and laws. The San Diego region’s river supplies are largely protected from reductions because they are tied to California’s senior rights within the Lower Colorado River Basin as well as the Imperial Irrigation District’s (IID) high priority rights through the Water Authority’s conserved water transfer agreement with IID.

The second alternative calls for Reclamation to analyze the effects of reductions “distributed in the same percentage” for all water users in the Lower Basin states – California, Arizona and Nevada – despite there being no precedent or foundation for this approach under existing laws. It would mean across-the-board reductions for all water users in the region, including those with senior water rights.

Reclamation has stated it is expecting input from states, tribes and water agencies to fine-tune and adjust these alternatives. Discussions are ongoing between stakeholders.

Colorado River Board of California

“The Water Authority will continue to work in collaboration with our partners on the Colorado River Board of California to ensure California’s high priority water rights on the river are upheld through this SEIS process while we also work with all river stakeholders to develop long-term, durable solutions for the river,” Denham said.

The draft SEIS will be available for public comment for 45 calendar days and the final SEIS is anticipated to be available with a Record of Decision in Summer 2023, according to the Bureau of Reclamation. Comments on the draft SEIS are due May 30. This document will inform the August 2023 decisions that will affect 2024 operations for Glen Canyon and Hoover Dams.

The proposal to address immediate water supply challenges complements Reclamation’s ongoing process to develop new guidelines for Colorado River Operations when the current interim guidelines expire at the end of 2026.

Water Recycling Pipeline-Olivenhain MWD-April 2023

OMWD’s Recycled Water Pipeline Reduces Imported Water

A new recycled water pipeline in Encinitas is helping to reduce the region’s dependence on imported water supply. The Olivenhain Municipal Water District, or OMWD, constructed the Manchester Avenue Recycled Water Pipeline Project to expand the availability of recycled water within the City of Encinitas.

Local, regional, state and federal officials celebrated the project‘s completion with a ribbon-cutting ceremony Tuesday at MiraCosta College. The officials highlighted the various funding sources for the new pipeline while also pointing out the various infrastructure projects online and under development to increase local water supply sources in San Diego County.

Sustainable local water supply

“Every drop of recycled water used on our landscapes replaces a drop of imported drinking water,” said OMWD Board President Christy Guerin. “With the ongoing challenges we’re facing on the Colorado River, expanding our recycled water distribution system to convert more customer irrigation systems to sustainable, local supplies is of paramount importance.”

Congressman Mike Levin attended the celebration along with representatives from Senator Catherine Blakespear’s office and Assemblymember Tasha Boerner Horvath’s, as did local agency partners San Diego County Water Authority, San Elijo Joint Powers Authority, and the City of Encinitas.

“Creating a water system that is not dependent on imported supplies is vital for the long-term sustainability of the region,” said Congressman Levin. “Every project that expands the use of recycled water lessens our dependance on imported supplies and improves our resiliency to future droughts. The collaborative approach taken by neighboring agencies to complete this project is an exemplary way to strengthen the region’s infrastructure.”

Recycled Water Pipeline-OMWD-Mike Levin

“Every project that expands the use of recycled water lessens our dependance on imported supplies and improves our resiliency to future droughts,” said San Diego Congressman Mike Levin. Photo: San Diego County Water Authority

“The completion of this project represents a necessary effort by numerous agencies to lessen the region’s dependence on imported water,” said Assemblymember Tasha Boerner Horvath. “The climate crisis is creating unpredictable weather patterns and we must invest in projects that will improve the region’s long-term resiliency to drought.”

Senator Catherine Blakespear said recycled water projects are becoming a critical tool in the fight against drought. “This project is a great example of how water agencies can work together to lessen our dependance on imported water supplies and create a more sustainable water supply portfolio,” said Blakespear.

Water conservation ‘A way of Life’

Water conservation is a way of life for all Californians, and San Diego residents have embraced water-efficiency. Over the past decade, residents and businesses across the county have adopted “WaterSmart” plants, irrigation technologies and habits that not only save money, but also create vibrant yards, reduce energy use, protect natural resources and reduce landscape maintenance.

The San Diego County Water Authority and its member agencies collaborate with organizations and other agencies to offer a variety of WaterSmart tools, including classes and rebates, along with a water-use calculator and other resources.

Collaboration to expand local drought-proof supply

The new pipeline is an element of the larger North San Diego County Regional Recycled Water Project, a collaborative effort among nine North County agencies that coordinate across jurisdictional boundaries. The recycled water being delivered through the new pipeline is produced at San Elijo Joint Powers Authority’s water reclamation facility in Cardiff.

“This project further expands the reach of our local recycled water system and makes drought-proof water for irrigation available for Encinitas’ schools, churches, and greenbelts,” said Encinitas Mayor Tony Kranz, “and it’s a great example of local agencies working together to develop cost-effective solutions for our residents.”

Reducing demand for imported drinking water

Expanding the use of recycled water for irrigation, as a renewable and locally produced water source, is an important strategy to reduce overall dependence on imported potable water.

OMWD has successfully converted Westmont of Encinitas to recycled water for landscape irrigation. The assisted living facility is the first of many customers along the Manchester Avenue and South El Camino Real corridor to tap into the newly installed recycled water pipeline.

Customers connecting to the new 1.4 mile six-inch diameter pipeline will irrigate with recycled water, reducing the demand for imported drinking water by more than 27 million gallons per year, according to the OMWD.

Additional customers along the corridor are working to convert their irrigation systems to accommodate the new recycled water supply, which will ultimately reduce demand for imported potable water by more than 27 million gallons every year.

Landscape irrigation-recycled water-Olivenhain Municipal Water Distrcit

“Investing in drought-resilient supplies is a top priority and every new recycled water customer we connect to our distribution system decreases demand for imported water,” said OMWD Board Secretary Larry Watt. Photo: Olivenhain Municipal Water District

Brackish groundwater desalination

OMWD serves up to 15% of its overall demand from recycled water and continues to identify additional ways to make recycled water available to eligible customers. In addition to recycled water efforts, OMWD is working on an additional project to construct a brackish groundwater desalination plant to further diversify supplies and provide ratepayers with a local source of drinking water. These supply projects, combined with conservation efforts, will help to ensure that OMWD customers will have the water they need during future droughts.

New recycled water pipeline taps federal, state funding

The project was funded in part by a $600,000 Proposition 84, Round 4 grant and a $750,000 Proposition 1, Round 1 grant via the California Department of Water Resources Integrated Regional Water Management Program. The new recycled water pipeline is also part of a suite of projects receiving $23.9 million in funds from the US Bureau of Reclamation’s Title XVI Water Reclamation and Reuse Program.

The Olivenhain Municipal Water District is a public agency providing water, wastewater services, recycled water, hydroelectricity, and operation of Elfin Forest Recreational Reserve. Organized in 1959, OMWD currently serves approximately 87,000 customers over 48 square miles in northern San Diego County.

(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.) 

Opinion-Colorado River Basin-San Diego County Water Authority-Smolens

Is the San Diego-Imperial Model Part of the Solution for Colorado River Woes?

In a sense, the record string of storms that hit California created two lakes — one real and one hypothetical.

The deluges re-established Tulare Lake, once the largest lake west of the Mississippi River that was drained long ago for agriculture and municipal water demands.

Record snowpack-April 2023-drought-California

Record Snowpack Conditions in California, Parts of Southwest

After a three-year drought in California and throughout the Southwest, many states throughout the West are measuring record snowpack conditions at NRCS SNOTEL stations and snow courses. Utah especially has seen a benchmark year for snowfall levels throughout the state.

Record snowpack

In California, the statewide snowpack (April 5) was 243% of normal, with the Northern Sierra at 198%, Central Sierra at 242%, and Southern Sierra at 302%. The California Department of Water Resources reported that the 2022-23 season will go down as one of the largest snowpacks on record in California.

In Nevada and Utah, current SWE percentages of median for select basins are as follows: Central Lahontan 273%, Central Nevada Desert Basins 267%, Great Salt Lake 224%, Lower Green 202%, Upper Colorado-Dolores 207%, and Upper Colorado-Dirty Devil 219%, according to the NRCS SNOTEL network.

In Arizona and New Mexico, snowpack levels are above normal, especially in the ranges of northern and central Arizona. In Arizona, the total reservoir system (Salt and Verde River system) is currently 100% full as compared to 72% full at the same time last year, according to the Salt River Project. For the Colorado River system, the U.S. Bureau of Reclamation is reporting (April 4) Lake Mead at 28% full and Lake Powell at 23% full.”

Agricultural weather highlights

“A significant Western warming trend during the weekend and early next week will increase streamflow due to melting snow. On April 10-11, temperatures should briefly top 95°F in lower elevations of the Desert Southwest. Periods of Northwestern precipitation will add to the runoff potential in that region. Meanwhile, little or no precipitation will fall during the next 5 days across a vast swath of the country, including southern California and the Plains, Southwest, Midwest, and Northeast.

Farther south, however, 5-day rainfall could total 1 to 3 inches or more from eastern Texas to the Carolinas, with the bulk of the rain falling by Saturday. The NWS 6- to 10-day outlook for April 11 – 15 calls for the likelihood of below-normal temperatures in California, the Great Basin, and the Northwest, while warmerthan-normal weather will dominate the central and eastern U.S. Meanwhile, above-normal precipitation from the Rockies into the Plains and upper Midwest should contrast with drier-than-normal conditions in the East (excluding Florida’s peninsula) and much of California.”

(Editor’s Note: The Natural Resources Conservation Service produces the weekly Water and Climate Update using data and products from the National Water and Climate Center and other agencies. The report focuses on seasonal snowpack, precipitation, temperature, and drought conditions in the U.S.)
Olivenhain Municipal Water District Logo landscape design workshops

OMWD Accepting WaterSmart Landscape Contest Entries

Encinitas, Calif. — Olivenhain Municipal Water District invites residents with water-efficient gardens to enter the 2023 WaterSmart Landscape Contest for a chance to win a $250 prize. An online application is available at www.landscapecontest.com, and the submission deadline is May 12.

The Vallecitos Water District's series of videos on using water wisely are being distributed nationwide through the EPA WaterSense program. Photo: Vallecitos Water District/YouTube

Millions Still Available to Help Low-Income San Diegans With Water Bills

A fund to help San Diego County residents pay their water bills still has $2.5 million sitting unclaimed. According to leadership of the nonprofit Metropolitan Area Advisory Committee on Anti-Poverty, or MAAC, which manages the fund, many people may not realize they qualify for assistance.

Sierra Nevada Snowpack: One of the Largest on Record

Following three consecutive years of drought in California, the Sierra Nevada snowpack is one of the most bountiful in more than 40 years. While the snowpack and snow water equivalent is great news for water supply, there are concerns the record snowpack could create flooding issues.

The California Department of Water Resources electronic readings from 130 snow sensors placed throughout the state indicate the statewide Sierra Nevada snowpack’s snow water equivalent is 61.1 inches, or 237% of average for April 3. The snow water equivalent measures the amount of water contained in the snowpack and is a key component of DWR’s water supply forecast.

Sierra Nevada snowpack

This year’s April result from the statewide snow sensor network is higher than any other reading since the snow sensor network was established in the mid-1980s. Before the network was established, the 1983 April 1 statewide summary from manual snow course measurements was 227% of average. The 1952 April 1 statewide summary for snow course measurements was 237% of average.

“This year’s severe storms and flooding is the latest example that California’s climate is becoming more extreme,” said DWR Director Karla Nemeth after the April 3 snow survey at Phillips Station in the Sierra Nevada. Photo: Fred Greaves/California DWR

“California’s climate is becoming more extreme”

“This year’s severe storms and flooding is the latest example that California’s climate is becoming more extreme,” said DWR Director Karla Nemeth. “After the driest three years on record and devastating drought impacts to communities across the state, DWR has rapidly shifted to flood response and forecasting for the upcoming snowmelt. We have provided flood assistance to many communities who just a few months ago were facing severe drought impacts.”

Just as the drought years demonstrated that California’s water system is facing new climate challenges, this year is showing how the state’s flood infrastructure will continue to face climate-driven challenges for moving and storing as much of these flood water as possible.

Sierra Nevada snowpack-snow survey-DWR-

“This year’s result will go down as one of the largest snowpack years on record in California,” said Sean de Guzman, manager of DWR’s Snow Surveys and Water Supply Forecasting Unit. (R-to-L: de Guzman, Jacob Kollen, Water Resources Engineer in Snow Surveys and Water Supply Forecasting Unit, and Jordan Thoennes, Water Resources Engineer in Snow Surveys and Water Supply Forecasting Unit.) Photo: Kenneth James/California DWR

“One of the largest snowpack years on record”

“This year’s result will go down as one of the largest snowpack years on record in California,” said Sean de Guzman, manager of DWR’s Snow Surveys and Water Supply Forecasting Unit. “While 1952’s snow course measurements showed a similar result, there were fewer snow courses at that time, making it difficult to compare to today’s results. Because additional snow courses were added over the years, it is difficult to compare results accurately across the decades with precision, but this year’s snowpack is definitely one of the biggest the state has seen since the 1950s.”

Sierra Nevada-snowpack-April 2023-DWR

Snowpack varies by region

For California’s snow course measurements, only 1952, 1969 and 1983 recorded statewide results above 200% of the April 1 average. While above average across the state this year, snowpack varies considerably by region. The Southern Sierra snowpack is currently 300% of its April 1 average and the Central Sierra is at 237% of its April 1 average. However, the critical Northern Sierra, where the state’s largest surface water reservoirs are located, is at 192% of its April 1 average.

Flooding and spring snowmelt

The size and distribution of this year’s snowpack is also posing severe flood risk to areas of the state, especially the Southern San Joaquin Valley. DWR’s State-Federal Flood Operations Center (FOC) is supporting emergency response in the Tulare Lake Basin and Lower San Joaquin River by providing flood fight specialists to support ongoing flood response activities and by providing longer-term advanced planning activities.

The FOC and DWR’s Snow Surveys and Water Supply Forecasting Unit are helping local agencies plan for the spring snowmelt season by providing hydraulic and hydrologic modeling and snowmelt forecasts specific to the Tulare Lake Basin that are informed by DWR’s snowmelt forecasting tools, including Airborne Snow Observatory (ASO) surveys.

Storms this year have caused impacts across the state including flooding in the community of Pajaro and communities in Sacramento, Tulare, and Merced counties. The FOC has helped Californians by providing over 1.4 million sandbags, over 1 million square feet of plastic sheeting, and over 9,000 feet of reinforcing muscle wall, across the state since January.

State Water Project deliveries increased

On March 24, DWR announced an increase in the forecasted State Water Project deliveries to 75%, up from 35% announced in February, due to the improvement in the state’s water supplies. Governor Gavin Newsom has rolled back some drought emergency provisions that are no longer needed due to improved water conditions, while maintaining other measures that continue building up long-term water resilience and that support regions and communities still facing water supply challenges.

Sierra Nevada Snowpack-April 2023-Reservoir conditions

Water supply challenges

While winter storms have helped the snowpack and reservoirs, groundwater basins are much slower to recover. Many rural areas are still experiencing water supply challenges, especially communities that rely on groundwater supplies which have been depleted due to prolonged drought.

Water conservation ‘a way of life’

Long-term drought conditions in the Colorado River Basin will also continue to impact the water supply for millions of Californians. The state continues to encourage Californians to make water conservation a way of life as more swings between wet and dry conditions will continue in the future. The San Diego County Water Authority and its 24 member agencies provide rebates and programs to encourage water conservation.

Given the size of this year’s snowpack with more snow in the forecast, DWR anticipates conducting a May snow survey at Phillips Station. That is tentatively scheduled for May 1.

Hamid Pezeshkian of Flametree Farms in Vista is among 2,000 growers enrolled in the PSAWR program. Photo: Vallecitos Water District

Special Water Rates Program Reduces Costs for San Diego County Growers

The San Diego County Water Authority and 13 of its member agencies offer growers a special agricultural water rate program: providing lower-cost water in return for lower reliability.

The Water Authority’s Board of Directors approved the Permanent Special Agricultural Water Rate Program (PSAWR) in 2020. It helps support commercial farms driving the economic engine of rural San Diego County. PSAWR gives farmers a choice of what level of water service works best for their operations.

Although San Diego County’s economy is best known for tourism and biotechnology, agriculture accounts for $2 billion yearly in regional economic activity, according to the most recent county assessment.

Vallecitos Water District and PSAWR Program

Vallecitos Water District is among the PSAWR participating agencies, working with growers like Hamid Pezeshkian of Flametree Farms in Vista. Pezeschkian is among 2,000 growers enrolled.

San Diego County production is largely the combined result of more than 5,000 family farms like Pezeshkian’s operation – the most of any county in the United States. In fact, 69% of all San Diego County farms are smaller than nine acres. Innovative practices – including water-use efficiency measures – allow local farms to be productive by focusing on high-value crops.

Healthy Ecosystem Built on Conservation

When he learned about the PSAWR program through the Vallecitos Water District, Pezeshkian discovered additional options plus a support system to help guide him through the process.

When he learned about the PSAWR program through the Vallecitos Water District, Hamid Pezeshkian discovered additional options plus a support system to help guide him through the process. Photo: Vallecitos Water District

Originally from Iran, Pezeshkian grows citrus, avocados, and various fruits including passion fruit, dragon fruit, and pomegranates, at his small permaculture farm with 500 trees.

“Planting a diverse range of fruit trees, plants, and cover crops as well as a variety of animals and species that coexist together allowing for a prosperous and healthy ecosystem and healthy soil,” explains Pezeshkian.

Water Conservation for Growers

Water conservation is integral to his operation and an ongoing learning process. Flametree Farms has upgraded its irrigation systems, is implementing rainwater collection systems, and aggressively uses organic compost to keep soil soft and help it retain water. When he learned about the PSAWR program through the Vallecitos Water District, Pezeshkian discovered additional options, plus a support system to help guide him through the process.

Vallecitos Water District “incredible to work with”

“The Vallecitos Water District has been incredible to work with,” said Pezeshkian. “They’re encouraging, they’re positive, and they’ve got an amazing smile when you meet them. They are always there to provide you with guidance and information when you need it.”

Pezeshkian found his best fit by qualifying as an organic producer.

“The Organic Program definitely appealed to me,” he said. “It was the taste of these oranges that made me realize that there’s something really special here in the soil. We put not a single drop of any sprays. These trees are just doing amazing, they’re producing, and I can’t wait to continue to go this path and bring healthy nutritious organic food to the community here and share it with my friends and family.”

Agriculture Among San Diego County’s Leading Industries

Flametree Farms has upgraded its irrigation systems, is implementing rainwater collection systems, and aggressively uses organic compost to keep soil soft and help it retain water. Photo: Vallecitos Water District

Flametree Farms has upgraded its irrigation systems, is implementing rainwater collection systems, and aggressively uses organic compost to keep soil soft and help it retain water. Photo: Vallecitos Water District

Agriculture directly employs 56,000 people in San Diego County, including the second-largest number of farms operated by women and the largest number of part-time farmers in the U.S. Along with avocados, San Diego County farmers rank first in the nation in the production of nursery crops, and in the top five producers nationwide of lemons, limes, guavas, pomegranates, and macadamias.

In exchange for lower priced water, participants agree to have reduced water service when the Metropolitan Water District of Southern California cuts supplies to San Diego County. In turn, the Water Authority can reallocate those supplies as needed to commercial and residential customers who pay for full reliability benefits.

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

Otay Water District Logo

Otay Water District Launches 2023 WaterSmart Landscape Contest

Spring Valley, Calif. – The Otay Water District has launched its annual WaterSmart Landscape Contest. Given that more than half of residential water use occurs on landscape irrigation, the contest aims to encourage outdoor conservation during the drought. The District awards the title “Best in District” and a nursery gift card, among other prizes, to one resident for their attractive, drought-tolerant garden. The deadline to enter is Friday, May 12, 2023.

Join Us for a Rate Study Workshop on April 19, 2023

Chula Vista – Sweetwater Authority is hosting a Rate Study Workshop -Technical Session on April 19, 2023 from 3:00 p.m. – 4:00 p.m. This in-person workshop is being held at the Authority’s Administration Building located at 505 Garrett Avenue in Chula Vista.