Water resources management in the Pajaro Valley Basin

The Pajaro Valley is home to a billion-dollar agricultural industry, it’s rich, fertile soil providing fruits and vegetables for the nation and all grown with groundwater.  Located on the Central Coast, the Pajaro Valley has no connection to the State Water Project or to otherwise bring in imported water.

In 1980, the Department of Water Resources published Bulletin 118, identifying the Pajaro Valley as one of eleven basins in the state considered critically overdrafted.  Community leaders recognized that local management of the groundwater basin was necessary as seawater intrusion was already impacting agricultural water supplies as well as domestic wells; however, there was no single agency with authority to manage the entire basin which encompasses parts of Santa Cruz, Monterey, and San Benito counties as well as the City of Watsonville.  So in 1984, local legislators spearheaded the state legislation necessary to form the a multi-jurisdictional agency to manage groundwater which was subsequently approved by local voters.

Since that time, the Pajaro Valley Water Management Agency has been working toward sustainable management of the Pajaro Valley’s water resources.  At the 2019 Western Groundwater Congress, General Manager Brian Lockwood discussed the projects and programs the Agency is implementing as they work towards achieving groundwater sustainability.

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WESTERN GROUNDWATER CONGRESS: Quantifying surface water depletion from groundwater pumping

Surface water commonly is hydraulically connected to ground water, but the interactions are difficult to observe and measure and have largely been ignored in water-management considerations and policies.  However, the Sustainable Groundwater Management Act (SGMA), passed in 2014, is California’s first statewide law that explicitly reflects the fact that surface water and groundwater are frequently interconnected and that groundwater management can impact groundwater-dependent ecosystems, surface water flows, and the beneficial uses of those flows.  The challenge of quantifying these interactions has led to the development of several techniques.

At the 2019 Western Groundwater Congress, Gilbert Barth, PhD is an Associate and Senior Hydrologist with S.S. Papadopulos & Associates in their Boulder office, gave an overview of groundwater-surface water interactions and discussed some of the tools and techniques that he has helped develop. Dr. Barth provides quantitative assessments of groundwater resources to address questions associated with water planning, and specializes in model development and calibration with a focus on quantifying changes between surface water and groundwater systems.  He’s developed and applied models throughout the Western US for regional, interstate, and international deliberations.

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ERIC AVERETT: Water allocation strategies in the context of the Sustainable Groundwater Management Act

Eric Averett is General Manager with the Rosedale-Rio Bravo Water Storage District, which is one of several water districts within Kern County.  Kern County is the largest basin in the state, is designated as critically overdrafted, and is arguably one of the most complex with respect to the number of water interests that are involved.  In addition, they have had to deal with approximately 500,000 acres of undistricted or ‘white land’ areas.  In this presentation from the Western Groundwater Congress, Mr. Averett discusses how his district and Kern County have been grappling with how to establish groundwater pumping allocations.

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WESTERN GROUNDWATER CONGRESS: Depletion of interconnected surface waters: Not that simple

Sierra Ryan is a water resources planner with the County of Santa Cruz.  In this presentation from the Groundwater Resources Association‘s 2019 Western Groundwater Congress, Ms. Ryan tells the story of how the Santa Cruz Mid-County Groundwater Agency balanced the various perspectives, authorities, and interpretations of the DWR regulations in writing the portion of their Groundwater Sustainability Plan that pertained to the depletion of interconnected surface water (sustainability indicator or undesirable result #6). “I promise you that it was not as simple as we thought it was to begin with, so for those of you in the medium and high priority basins that have the 2022 deadlines, I hope you’re thinking about this now,” Ms. Ryan advised. Click here to read this article at Maven’s Notebook.

SGMA IMPLEMENTATION: David Orth gives his observations on how sustainable groundwater management is playing out in the San Joaquin Valley

David Orth is the principal of New Current Water and Land, which offers strategic planning, program implementation, and water resource development services.  At the California Irrigation Institute’s 2020 Annual Conference, he gave his observations on how implementation of the Sustainable Groundwater Management Act (SGMA) is progressing, having watched Groundwater Sustainability Agencies (GSAs) form and develop their Groundwater Sustainability Plans (GSPs) since the passage of the SGMA in 2014.

New Current Water and Land is a small strategic planning shop that combines experience in water engineering, finance, district management, and water law to create a strategic planning platform.  Their clients are from the farming community, the investment community, and the lending community.  They also work with one environmental NGO.  Over the last several years, they have monitored over 60 GSAs on behalf on that client base in over 40 subbasins, including about 15 of the 21 subbasins that are considered critically overdrafted.

Through the course of that, we’ve provided a general risk assessment for our clients by area so they can understand where they really need to pay attention as GSPs are developed in the policy engagement arena,” he said.  “Then we extrapolated that into long-term forecasting of what individual ranch water budgets are going to look like upon full implementation of SGMA.  This has assisted our ag clients in making decisions about redevelopment or acquisition or disposition in how to deal with the new variable that SGMA creates.”

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SGMA IMPLEMENTATION: Water rights permitting options for groundwater recharge projects

ACWA/State Water Board webinar presentation outlines temporary and permanent options, including a new streamlined permitting pathway for standard water rights permits

Almost five years ago, in the midst of a historic drought, the legislature passed the Sustainable Groundwater Management Act of 2014 (SGMA).  The centerpiece of the legislation is the principle of local groundwater basin management, requiring the establishment of local Groundwater Sustainability Agencies (or GSAs) and the preparation of Groundwater Sustainability Plans (or GSPs) for groundwater basins statewide.  The plans detail how the basin will be managed to avoid undesirable results, such as salt water intrusion or land subsidence, and to achieve sustainability managed basins over a 20 year planning and implementation horizon.

As many groundwater basins work to achieve sustainability, many if not most will look to groundwater recharge as a tool to help balance supplies and demands.  At a webinar held at the end of last year, State Water Board staff discussed new permitting options for Groundwater Sustainability Agencies pursuing recharge projects.

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CA WATER COMMISSION: An update on implementation of the Sustainable Groundwater Management Act (or SGMA)

DWR’s Taryn Ravazzini updates the Commission on the Department’s activities, including major milestones, 2019 activities, and the Department’s technical and financial assistance

In September of 2014, Governor Brown signed a package of legislation known as the Sustainable Groundwater Management Act (SGMA) which created a framework for local agencies to develop Groundwater Sustainability Plans (GSPs) tailored to their regional needs.

To date, SGMA implementation has included local agencies forming groundwater sustainability agencies (GSAs), two rounds of basin boundary modifications and basin prioritizations, and alternative plan reviews.  Next, SGMA requires GSAs to prepare GSPs which will result in sustainable management of groundwater basins within 20 years.  For basins designated as critically overdrafted, the plans are due by January 31, 2020; other high and medium priority basin plans are due on January 31, 2022.

At the November meeting of the California Water Commission, Taryn Ravazzini, DWR Deputy Director for Statewide Groundwater Management, updated the Commission on DWR’s recent activities and milestones related to SGMA.

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GROUNDWATER TWO-FOR: The disconnect between groundwater legal systems and groundwater hydrology; Proactively managing groundwater to sustain communities and nature in an uncertain future

David Sandino and Maurice Hall present their big ideas on groundwater management

The Groundwater Resources Association of California (GRA) created the David Keith Todd Distinguished Lecture Series to honor Dr. David Keith Todd, a GRA 1999 Lifetime Achievement Award recipient, for his enormous contributions to groundwater science and technology, and to foster interest and excellence in applied groundwater science and technology. Two lecturers are selected with the lectures offered in Northern and Southern California at universities, statewide and regional GRA events, and GRA’s Annual Conference and Meeting.

The 2019 lectures featured David Sandino, Senior Staff Counsel at the Department of Water Resources, who spoke about the disconnect between legal groundwater systems and how the system actually works, describing the areas where they do not accurately reflect the physical environment and pose problems for effective groundwater management; and Maurice Hall, Associate Vice President of Ecosystems-Water at the Environmental Defense Fund, who spoke of how more holistic and inclusive groundwater management can increase the resilience of our water supply and sustain and enhance the services that groundwater basins provide for a wide range of stakeholders.

At the Groundwater Resources Association’s 2019 Western Groundwater Congress, Mr. Sandino and Mr. Hall gave brief presentations of their lectures.

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SGMA IMPLEMENTATION: Developing Sustainable Management Criteria

Minimum thresholds, measurable objectives, undesirable results: A panel of consultants discuss the specifics of how their GSAs determined sustainable management criteria

The passage of the Sustainable Groundwater Management Act in 2014 requires that groundwater basins be managed such that the use of groundwater can be maintained during the planning and implementation horizon without causing undesirable results.  In order to demonstrate sustainability, the Groundwater Sustainability Plan regulations require the development of locally-defined quantitative sustainable management criteria, including undesirable results, minimum thresholds, and measurable objectives.

At the second annual Groundwater Sustainability Agency Summit, hosted by the Groundwater Resources Association in June of this year, a panel of consultants discussed the process and the specifics of how they developed sustainable management criteria for their basins.

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CA WATER LAW SYMPOSIUM: Questions of common supply: SGMA requirements for interconnected surface water and groundwater

The Yuba River a tributary of the Feather River flows east to west from the Sierra Nevada Mountains into the Sacramento Valley in Northern California. Dale Kolke / California Department of Water Resources

The Sustainable Groundwater Management Act (SGMA), passed in 2014, is California’s first statewide law that explicitly reflects the fact that surface water and groundwater are frequently interconnected and that groundwater management can impact groundwater-dependent ecosystems, surface water flows, and the beneficial uses of those flows.

SGMA requires groundwater sustainability agencies (GSAs) to manage groundwater to avoid six undesirable results, one of which is significant and unreasonable adverse impacts on beneficial uses of surface water. While this aspect of SGMA is clearly important, significant uncertainties exist regarding how GSAs will actually define and achieve this goal.  At the 2019 California Water Law Symposium, a panel of experts discussed the structure of SGMA and how it addresses these water connections, particularly in relation to fisheries and the public trust doctrine.

Seated on the panel:

The panel was moderated by Kevin O’Brien, attorney and partner at Downey Brand and organized by students at Golden Gate University School of Law.

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