Tag Archive for: Water Supply

Turning Seawater into Drinking Water

The power and technology behind the Claude “Bud” Lewis Carlsbad Desalination Plant, which turns seawater into drinking water, is described in this video report from Reporter Trason Bragg.

The Carlsbad Desalination Plant is the largest, most technologically advanced and energy-efficient desalination plant in the nation, and it has produced more than 100 billion gallons of drinking water for San Diego County since operations began in December 2015.

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.

sea water-seawater desalination-desalination-Carlsbad Desalination Plant-Trason Bragg

Turning Seawater into Drinking Water

The power and technology behind the Claude “Bud” Lewis Carlsbad Desalination Plant, which turns seawater into drinking water, is described in this video report from Reporter Trason Bragg.

The Carlsbad Desalination Plant is the largest, most technologically advanced and energy-efficient desalination plant in the nation, and it has produced more than 100 billion gallons of drinking water for San Diego County since operations began in December 2015.

Seawater into drinking water

New intake and discharge facilities

The new intake and discharge facilities at the Carlsbad Desalination Plant will ensure the plant continues to meet California’s stringent Ocean Plan standards for protecting marine life. Work started in January 2023 and the new facilities are anticipated to be operational by December 2024. Except for a planned plant outage required near the end of the project to connect the new facilities to the existing intake system, construction is not expected to impact water production.

100 billion gallons-reverse osmosis-seawater desalination

Reverse osmosis is the heart of the Carlsbad Desalination Plant. During this process, dissolved salt and other minerals are separated from the water, making it fit for consumption. This reverse osmosis building contains more than 2,000 pressure vessels housing more than 16,000 reverse osmosis membranes. Photo: San Diego County Water Authority

Reclamation Increases Central Valley Project 2023 Water Supply Allocations

The Bureau of Reclamation March 28, announced an increase in Central Valley Project 2023 water supply allocations. After below average precipitation in February, Reclamation announced a conservative initial water supply allocation for the CVP on Feb. 22. Additional atmospheric river systems have since boosted hydrological conditions and storage volumes, allowing for a more robust water supply allocation.

Since making initial allocations last month, Shasta Reservoir, the cornerstone of the Central Valley Project, has increased from 59% to 81%, and San Luis Reservoir, the largest reservoir south-of-Delta, from 64% to 97%. Record-breaking snowpack conditions currently exist in the Southern Sierra coupled with significant snowpack in the Central Sierra and Northern Sierra/Trinity.

Supply Allocation-Central Valley Project-Bureau of Reclamation

Reclamation Increases Central Valley Project 2023 Water Supply Allocations

The Bureau of Reclamation March 28, announced an increase in Central Valley Project 2023 water supply allocations. After below average precipitation in February, Reclamation announced a conservative initial water supply allocation for the CVP on Feb. 22. Additional atmospheric river systems have since boosted hydrological conditions and storage volumes, allowing for a more robust water supply allocation.

Since making initial allocations last month, Shasta Reservoir, the cornerstone of the Central Valley Project, has increased from 59% to 81%, and San Luis Reservoir, the largest reservoir south-of-Delta, from 64% to 97%. Record-breaking snowpack conditions currently exist in the Southern Sierra coupled with significant snowpack in the Central Sierra and Northern Sierra/Trinity.

2023 Central Valley Project supply allocations increased

Based on current hydrology and forecasting, Reclamation is announcing the following increases to CVP water supply allocations:

North-of-Delta Contractors

  • Irrigation water service and repayment contractors north-of-Delta are increased to 80% from 35% of their contract total.
  • Municipal and industrial water service and repayment contractors north-of-Delta are increased to 100% from 75% of their historic use.

South-of-Delta Contractors

  • Irrigation water service and repayment contractors south-of-Delta are increased to 80% from 35% of their contract total.
  • M&I water service and repayment contractors south-of-Delta are increased to 100% from 75% of their historical use.

Friant Division Contractors

  • Friant Division contractors’ water supply is delivered from Millerton Reservoir on the upper San Joaquin River and categorized by Class 1 and Class 2. The first 800,000 acre-feet of available water supply is considered Class 1; Class 2 is considered the next amount of available water supply up to 1.4 million acre-feet. Class 1 remains at 100% and Class 2 was previously increased from 20% to 70% on March 7.

Friant Dam is currently being operated for flood control purposes; as long as these conditions exist contractors are able to take delivery of all available water from Friant Dam to the maximum extent of their respective contracts.

All other CVP water supply allocations remain the same as noted in the Feb. 22 announcement.

As the water year progresses, changes in hydrology, actions that impact operations, and opportunities to deliver additional water will influence future allocations. Reclamation will continue to monitor hydrology and may adjust basin-specific allocations if conditions warrant an update. Water supply updates and past year’s allocations are posted on Reclamation California-Great Basin Region’s website.

This Drought is Dead – Long Live the Drought

Floods and droughts are not opposites and can occur simultaneously. This occurs often in California and is especially well-illustrated this year.

Floods, droughts, and water scarcity are different. Floods are too much water at a place and time, and we would often pay to reduce the water present at that location and moment. Droughts and water scarcity represent too little water at a place and time, meaning we would often pay to increase its availability. We highlight these differences because people tend to view such conditions through an unrealistic zero-sum lens. This essay uses this year’s experience to examine how floods, drought, and water scarcity differ, can occur in the same year, and how droughts might end, but leave legacies.

This California drought is largely over. Even though there is another month left in California’s wet season, the 2020-2022 California drought is largely over. Precipitation in all major basins of California exceeds averages for the entire water year. Snowpacks are well above April 1 averages (usually about the maximum for the year). Most reservoirs have more than average volumes stored for this time of year, and many are in flood operations. Only a few very large reservoirs (relative to their average inflows) remain below historical averages (such as Trinity at 50% and New Melones at 90% of their averages).

Opinion: MMWD Must Show How Rate Hike Will Help Water Supply

The Marin Municipal Water District’s directors are on a political hot seat.

They are considering a four-year plan of raising rates, possibly as much as 20% for most customers, to right MMWD’s fiscal ship and pay for expanding the district’s storage capacity and make needed repairs.

Snow Readings Give Reprieve to Colorado River Shortage

“It’s snowing!” is how Imperial Irrigation District Water Manager Tina Shields began her hydrology report at the March 21 regular meeting. The water manager’s monthly reports have taken a turn to the positive after years of dire Lake Mead elevation readings.

Although Central California irrigates with water from different sources other than the Colorado River, the Valley’s sole source of water, Shields reported the continuous atmospheric rivers have been devastating to the Central Valley farmland with reports of flooding and washing out of ground.

“Every drought is followed by a flood,” she said. “They have had 250% above average of rain, the photos of two-story houses buried in snow and ski lifts unusable because they are covered in snow are crazy. They are actually talking about Fourth of July skiing and that fields will stay flooded for months. It is all time record breaking.”

Opinion: Western Water Crisis Solutions Inevitably End With a Lot Less for California Farms

A modest proposal for western water: Turn off the spigot to the Imperial Valley and let the farms go fallow. In return, provide a water future for Arizona, Nevada and Southern California.

Sure, there would be a price to pay. California’s Imperial Valley, which sits in the southeastern corner of the state, bordered by Arizona and Mexico, produces alfalfa, lettuce, corn and sugar beets, among other crops. It’s home to more than 300,000 head of cattle. Cutting off the water would end all of that, along with the livelihoods of the farmers and ranchers who produce it and the communities that depend on it.

EPA Loans $170 Million for Claude “Bud” Lewis Desalination Plant Environmental Upgrades

The U.S. Environmental Protection Agency has loaned $170 million intended to reduce financing costs for environmental upgrades at the Claude “Bud” Lewis Carlsbad Desalination Plant, it was announced Friday.

Rep. Mike Levin, D-Dana Point, helped secure the funds, which he said will save ratepayers up to $54 million compared to alternate financing strategies.