The August 2026 final draft of the State Water Resources Control Board’s (SWRCB) “Water Quality Control Plan for the San Francisco Bay/Sacramento-San Joaquin Delta Watershed” has been released. Written comments will be accepted through September 18, and the board will also take oral comments at the October 28-29, 2026 meeting where the SWRCB may formally adopt the plan. Anyone...

In the cities and farms immediately south of the Sacramento-San Joaquin Delta, the worst flooding of the 20th century happened in 1997. Several days of unrelenting rain pummeled the slopes of the Sierras, and with the snow line unusually high at 10,000 feet, nearly all of it poured into the San Joaquin River and other tributaries. Reservoirs...

Earlier this summer a guest op-ed appeared in the Orange County Register, “Learning the right lesson from San Diego’s desal water surplus.” But the “lesson” presented was only partly accurate. What the authors, both affiliated with the Property and Environment Research Center (PERC), got right was the need to change regulations that restrict the ability for farmers to...

It’s January 2027, and for the last few months, a super El Nino has already delivered torrential rains to the Pacific Coast of North America. California’s reservoirs have been releasing record quantities of water to preserve space for the next round of precipitation but their remaining capacity to absorb runoff is dangerously low. From the peaks of...

When choosing what policies and projects might best ensure abundant water for California’s ecosystems, farms, and cities, the role of the delta is central. Even if large scale desalination were to someday deliver over a million acre feet of water per year to California’s coastal cities, how we manage the delta affects many times that...

Whether it’s an energy project or a water project, it’s important to avoid conflating capacity with actual production, or yield. With energy projects, that difference is much more certain than with water projects. For example, in 2024, California’s lone remaining nuclear power plant at Diablo Canyon, with an output capacity of 2.4 gigawatts, would have produced...

For most of the previous century, Californians successfully designed and built big water infrastructure. In sixty years, from 1910 through 1970, we built the most impressive system of interbasin transfers in the world. The Los Angeles Aqueduct, Hetch Hetchy Aqueduct, Colorado River Aqueduct, Delta Mendota Canal, Friant-Kern Canal, and California Aqueduct. Altogether these conveyances are...

In debates over water policy in California, a common argument is that if only we managed the systems we’ve already got, there would be plenty of water for everyone. Agricultural and urban use would not have to be rationed, taxpayers and ratepayers would not have to be unnecessarily burdened, and we wouldn’t have to wait...

For the last 25 years, the US Drought Monitor (USDM), a collaborative effort by the University of Nebraska, NOAA, the USDA, and other experts throughout the country, has released a weekly map that shows the location and intensity of drought across the United States. On January 8, for the first time ever, USDM’s weekly map showed the...

A new year has begun, and here in California, 2026 promises to deliver challenges that may at last transform the state’s energy and water policies. Let’s begin with a quick look at California’s current water policies in action. The last month of 2025 delivered a series of storms that merited the distinction of being dubbed “atmospheric...