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A Look at Southern California’s Water Supply After Winter Storms

Southern California’s largest reservoir, Diamond Valley Lake, is nearly full due in large part to two powerful sets of storms that drenched the region over the Christmas and New Year’s holidays.

It’s at 94% capacity. Many of the reservoirs in Los Angeles County, just as critical, are also in good shape. It’s been a long time since the region has seen this much rain this early in the season.

Officials Take Drastic Action as Crucial Water Supply Remains in Flux: ‘Preparing for a Future With More Extreme Weather’

After years of unpredictable water resources, California officials are taking steps to make sure precious rainwater doesn’t just wash away when storms hit.

State leaders announced this week that California is expanding efforts to capture and store stormwater during the wet season. According to the governor’s office, per KRCR, agencies across the state are working together to collect runoff, direct it into reservoirs, and recharge groundwater for use during drier months.

Two-Thirds of the US Is Facing Drought in the Middle of Winter. Here’s Why Scientists Are Worried

More than two-thirds of the country is facing unusual dryness or full-blown drought conditions, despite winter being known for heavier precipitation, according to a Washington Post analysis of recent U.S. Drought Monitor data.

The conditions touch every state except for the usually drought-prone California, which has had a wet winter.

OPINION: We Cannot Afford Pure Water Los Angeles

The Department of Water and Power is developing plans for Pure Water Los Angeles (“PWLA”)  a facility that will convert wastewater to drinking water.  This project will be located at Hyperion, just south of LAX, and will produce an estimated 200,000-acre feet of potable water a year, an amount equal to more than 40% of the City’s annual consumption.

This project is designed to increase the supply of water from local sources (10-15%), reducing our dependence on non-local sources (85-90%).  Today, the City relies on water delivered by the Metropolitan Water District (“MWD”) through the California Aqueduct from Northern California and the Colorado River Aqueduct.  We also receive water via the Los Angeles Aqueduct from sources in the Eastern Sierras and Owens Valley that are controlled by DWP, although this source has been constrained because of environmental issues.

OPINION: Water Cuts Pending

As we start the second full week of the new year, Imperial Valley continues to receive unwelcome news. While our elected IID Board members and key staff have been busy celebrating the growth in the Coachella Valley in ribbon cuttings IID celebrates and filing litigation against the County of Imperial (IID Files Lawsuit), the most important aspect of their responsibility seems to be slipping away from them and without any notice to the public.

For all things following the Colorado River, be aware that the interim Guidelines which established criteria for water use, expire in August 2026. The 2025 deadlines set for the seven-state negotiating team for new 2026 guidelines were missed. With that failure, the U.S. Bureau of Reclamation has released a report with five options for managing the Colorado River after 2026. The significance of that 1600-page report can be summarized below:

Beyond the Forecast: Record-Setting Rain Delivers One of the Wettest Starts to CA Water Year

Record-setting rain this season has pushed California completely out of the “abnormally dry” category on the U.S. Drought Monitor for the first time in 25 years, as a series of storms delivered one of the wettest starts to the water year across the state.

Southern California saw a notably soggy holiday period, with rain on Christmas Eve and Christmas marking the fourth-wettest two-day holiday stretch on record.

Westlands Pushes for More Water Storage as California Declared Drought-Free

California has been declared drought-free for the first time in a quarter-century.

However, Central Valley water experts warn that the state needs to take immediate action to boost water supplies in preparation for future dry conditions. The U.S. Drought Monitor declared that California does not have any drought conditions last week. That is the first time that California has not experienced drought conditions since December 2000.

Down and Dirty With Digital: How AI Enhances Water Infrastructure Fieldwork

Fieldwork is at the heart of infrastructure expansion and rehabilitation, as utilities, engineers, and contractors collaborate to build the systems and structures that treat and move water. The opportunity is great, but so are the challenges. Which is why new, digitally-enhanced tools are needed — to meet modern demands related to labor shortages, regulatory pressures, environmental threats, worker safety, and ever-tighter budgets.

Such technologies are also used to support “boots on the ground” labor, as planning, design, monitoring, and management decision-making are all enhanced by digital technologies.

Microsoft Rolls Out Initiative to Limit Data-Center Power Costs, Water Use Impact

Microsoft on Tuesday unveiled an initiative to curb water usage at its U.S. data centers and limit the impact on the general population from any potential surge in power prices.
Political leaders across the U.S. are urging a rapid expansion of data-center capacity and new power production to keep the country competitive in AI. However, local communities are voicing concerns over how the power-hungry facilities will impact their utility bills and use land, water and other natural resources in the region.

U.S. House Passes Energy and Water Funding Bill, but Final Water Allocations Still Ahead

On Jan. 8, 2026, the U.S. House of Representatives overwhelmingly approved a three-bill appropriations package that includes the Energy and Water Development and Related Agencies Appropriations Act, 2026, as part of a broader funding measure aimed at completing fiscal year 2026 appropriations. The consolidated package passed by a vote of 397 to 28 and now moves to the Senate for consideration.

The Energy and Water Development segment of the legislation provides annual funding for the U.S. Army Corps of Engineers (Civil Works) and other water-related federal programs that support water infrastructure, flood control, navigation, and other essential water systems. While the bill covers a wide range of civil works and energy priorities, the water sector’s interest largely centers on how funds are allocated for water supply reliability, inland navigation systems, and related Corps projects.