Category Archives: Groundwater

Accounting for groundwater movement between subbasins under SGMA

by Christina Buck, Jim Blanke, Reza Namvar, and Thomas Harter The Sustainable Groundwater Management Act (SGMA) presents many new challenges and opportunities.  One challenge is accounting for ‘interbasin flow,’ or subsurface groundwater movement between subbasins, a piece of the overall … Continue reading

Posted in California Water, Groundwater, Planning and Management, Sustainability | Tagged | 3 Comments

Groundwater Nitrate Sources and Contamination in the Central Valley

by Katherine Ransom and Thomas Harter In California’s Central Valley, many communities depend significantly or entirely on groundwater as their drinking water supply. Studies estimate the number of private wells in the Central Valley to be on the order of … Continue reading

Posted in Agriculture, California Water, Groundwater, Nitrate, Water Supply and Wastewater | Tagged , | 4 Comments

Fish, flows, and 5937 – legal challenges on the Santa Maria River

by Karrigan Bork, JD, PhD Driving down the 101, you cross a half-mile long bridge over the Santa Maria River into the city of Santa Maria, California. It’s a large bridge, with big levees to constrain the river on either … Continue reading

Posted in California Water, Fish, Groundwater, Planning and Management, Sustainability | Tagged | 3 Comments

GRA’s Contemporary Groundwater Issues Council weighs in on BMPs for Groundwater Sustainability Plans

by Thomas Harter, Vicki Kretsinger Grabert, Reid Bryson, and Tim Parker On May 26, 2016, eight days after the California Water Commission voted to approve emergency regulations for Groundwater Sustainability Plans, the Groundwater Resources Association (GRA) held the sixth annual workshop of … Continue reading

Posted in California Water, Groundwater, Planning and Management, Uncategorized | Tagged , , , | 3 Comments

Post-drought groundwater in California: Like the economy after a deep “recession,” recovery will be slow

by Thomas Harter The 2012-2016 drought has made many of us keenly aware of how “empty” our groundwater “reservoirs” have become. As the recent series of atmospheric rivers have left us with a massive snowpack, full surface water reservoirs (with … Continue reading

Posted in Groundwater | Tagged | 9 Comments

Evaluating California’s Adjudicated Groundwater Basins in the SGMA Era

By Ruth Langridge, University of California – Santa Cruz [i] Groundwater is a critical resource in California. While the 2014 Sustainable Groundwater Management Act (SGMA) established new requirements and increased state oversight for many overdrafted basins,[ii] groundwater basins adjudicated before … Continue reading

Posted in Groundwater | Tagged | 1 Comment

Scott Valley pioneers instream flow and groundwater management for reconciled water use

by Gus Tolley The Scott River is one of California’s four major undammed streams and important spawning habitat for coho (a species listed as “threatened”) and Chinook salmon. This peaceful and pastoral agricultural valley is at the center of several … Continue reading

Posted in California Water, Groundwater, Planning and Management, Salmon, Uncategorized, Water Markets | Tagged | 5 Comments

Local groundwater management in France and California

by Corentin Girard   France and California have different environmental, agricultural, economic, institutional, and cultural contexts. However, both are moving to more local management of groundwater. In California, the 2014 Groundwater Sustainable Management Act required creation of  local Groundwater Sustainable … Continue reading

Posted in Around the World, California Water, Groundwater, Planning and Management, Uncategorized | Tagged | 2 Comments

Better accounting begets better water management

by Jay Lund Sustainable use of groundwater in California will require major changes in groundwater management, use, and recharge.  Under the 2014 Sustainable Groundwater Management Act, groundwater basins as a whole are responsible for sustainability.  But millions of people and … Continue reading

Posted in California Water, Groundwater, Planning and Management, Sustainability, Uncategorized | Tagged | 4 Comments

SGMA and the Challenge of Groundwater Management Sustainability

By Bill Blomquist It isn’t just the groundwater that has to be sustainable; it’s the management too. That’s why the title of this post shifts from the more familiar “sustainable groundwater management” to “groundwater management sustainability.” This perspective doesn’t come … Continue reading

Posted in Groundwater, Planning and Management | Tagged | 4 Comments