International Conference to Address Groundwater Challenges and Successes in Agricultural Regions
Grab a Coveted Sponsor or Exhibitor Spot at this Unique Gathering in San Francisco

Groundwater basins in California and across the world are the source for much of the water that grows our food. But many challenges come with groundwater: Keeping use sustainable, nitrate contamination and impacts from climate change.

The world’s top scientists, policymakers and experts will be addressing these topics June 18-20 in San Francisco at the  3ʳᵈ International Groundwater Conference Linking Science & Policy, along with the latest advancements on groundwater demand management, conjuctive use, managed aquifer recharge, groundwater governance and emerging artificial intelligence resources related to groundwater and agriculture.

Learn more about the topics by viewing the draft program here.


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Water News You Need to Know

Aquafornia news CalMatters

Friday Top of the Scroll: $20 billion: The Delta tunnel’s new price tag

California’s contentious and long-debated plan to replumb the Sacramento-San Joaquin Delta and pump more water south finally has a price tag: about $20 billion.  The new estimate for the Delta tunnel project — which would transform the massive water system that sends Northern California water south to farms and cities — is $4 billion higher than a 2020 estimate, largely because of inflation. Included is almost $1.2 billion to offset local harms and environmental damage, such as impacts on salmon and rare fish that state officials have called “potentially significant.” The goal of the project is to collect and deliver more water to two-thirds of California’s population and 750,000 acres of farmland during wet periods … But environmental groups and many Delta residents have long warned that the tunnel could put the imperiled Delta ecosystem at even greater risk, sapping freshwater flows needed for fish, farms and communities in the region.

Related articles: 

Aquafornia news KUNC - Greeley, Colo.

Negotiator says 7 Western states are close to a Colorado River water sharing deal

Policymakers say they’re getting closer to an agreement between seven Western states on how to manage the Colorado River in the future. But details from those closed-door negotiations have been limited. Utah’s top water negotiator said states have met “three or four times” since they split into two factions and put out competing proposals back in March. Gene Shawcroft didn’t give specifics but said they’re making progress on a strategy to share water after 2026, when the current river management plan expires. “I think the commitment level to stay together on a seven state proposal is significantly higher now than it was a few weeks ago,” he said. It does not appear likely that Shawcroft and his allies are willing to back off from a proposal to send less water downstream to California, Arizona and Nevada each year. 

Related Colorado basin water article: 

Aquafornia news Hanford Sentinel

Corcoran has sunk nearly 5 feet

Land subsidence remains the biggest issue in the new state regulation of groundwater. The state Water Board reports that subsidence measured as much as 7 feet just east of Corcoran between June 2015 and January 2024. Groundwater pumping west of Highway 99 has caused the land to sink at least 4 to 5 feet according to a DWR database. The worry here is the collapse of water delivering infrastructure. Tulare Lake farmers have been asked to install metering on their pumps 90 days after the decision to put the GSA on probation which was made April 16. That means by mid-July pumpers must install metering as well as begin reporting how much water they are extracting.

Aquafornia news Washington Post

Commentary: Why a water war is brewing between the U.S. and Mexico

A water dispute between the United States and Mexico that goes back decades is turning increasingly urgent in Texas communities that rely on the Rio Grande. Their leaders are now demanding the Mexican government either share water or face cuts in U.S. aid. Sign up for the Climate Coach newsletter and get advice for life on our changing planet, in your inbox every Tuesday. In a deepening diplomatic conflict, Mexico is behind in obligations under an 80-year-old treaty that governs cross-border flows of the drought-stricken Colorado River. It has for decades resisted water deliveries to the United States from its reservoirs in the Rio Grande basin as it faces its own drought pressures on thirsty and valuable crops bound for sale across the border.
-Written by Scott Dance, reporter for The Washington Post covering extreme weather news.

Online Water Encyclopedia

Aquafornia news SJV Water

A Tulare County groundwater agency on the hot seat for helping sink the Friant-Kern Canal holds private tours for state regulators

As the date of reckoning for excessive groundwater pumping in Tulare County grows closer, lobbying by water managers and growers has ramped up. The Friant Water Authority, desperate to protect its newly rebuilt –  yet still sinking – Friant-Kern Canal, has beseeched the Water Resources Control Board to get involved. Specifically, it has asked board members to look into how the Eastern Tule Groundwater Sustainability Agency (GSA) has, or has not, curbed over pumping that affects the canal. Meanwhile, the Eastern Tule groundwater agency has been doing a bit of its own lobbying. It recently hosted all five members of the Water Board on three separate tours of the region, including the canal. Because the tours were staggered, there wasn’t a quorum of board members, which meant they weren’t automatically open to the public.

Related articles: 

Aquapedia background Sacramento-San Joaquin Delta Map


Sacramento National Wildlife RefugeWetlands are among the world’s most important and hardest-working ecosystems, rivaling rainforests and coral reefs in productivity. 

They produce high levels of oxygen, filter water pollutants, sequester carbon, reduce flooding and erosion and recharge groundwater.

Bay-Delta Tour participants viewing the Bay Model

Bay Model

Operated by the U.S. Army Corps of Engineers, the Bay Model is a giant hydraulic replica of San Francisco Bay and the Sacramento-San Joaquin Delta. It is housed in a converted World II-era warehouse in Sausalito near San Francisco.

Hundreds of gallons of water are pumped through the three-dimensional, 1.5-acre model to simulate a tidal ebb and flow lasting 14 minutes.

Aquapedia background Colorado River Basin Map

Salton Sea

As part of the historic Colorado River Delta, the Salton Sea regularly filled and dried for thousands of years due to its elevation of 237 feet below sea level.

The most recent version of the Salton Sea was formed in 1905 when the Colorado River broke through a series of dikes and flooded the seabed for two years, creating California’s largest inland body of water. The Salton Sea, which is saltier than the Pacific Ocean, includes 130 miles of shoreline and is larger than Lake Tahoe