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Modeling under SGMA: Using sensitivity analyses to guide future data acquisition

Presented By:

Dr. Trevor Jones, Dudek

 INTRODUCTION:

Numerical groundwater flow models have played an integral role in the implementation of the Sustainable Groundwater Management Act (SGMA) across the State. These flow models provide a framework for characterizing the effect of water supplies, demands, and management strategies on a Basin’s ability to operate within its sustainable yield. Confidence in these models are conditioned on available monitoring data that constrain historical simulation results. In Basins where this monitoring data is limited, Groundwater Sustainability Agencies (GSAs) are encouraged to identify methods of reducing data gaps and refining model predictions as part of their path towards achieving or maintaining Basin sustainability. Future projects, data collection, and model refinement can be facilitated through assessments of a numerical model’s sensitivity to specific processes and properties. This talk presents an approach for using sensitivity analyses as a method of identifying data acquisition strategies that provide the greatest benefits during a GSA’s path towards sustainability.

SPEAKER BIO:

Dr. Trevor Jones, Dudek

Trevor Jones is a Senior Hydrogeologist at Dudek working in the field of groundwater resource management. While at Dudek, Trevor has contributed to the development of Groundwater Sustainability Plans (GSPs) for critically overdrafted, high priority, and medium priority groundwater basins across California. As part of these efforts, Trevor has designed, calibrated, and assessed numerical groundwater flow models used to characterize historical and projected water supplies and demands on groundwater conditions across these basins. Trevor has facilitated the use of these numerical models in the development of sustainable management criteria and has characterized model uncertainties that constrain estimates of a Basin’s sustainable yield. Trevor and his colleagues work closely with their clients to ensure that numerical models are used conjunctively with newly measured data to provide holistic perspectives that guide GSP implementation. Trevor received his Ph.D. from the University of California, Irvine, where his doctoral research focused on the development of new computational models to simulate reactive flow and transport in heterogeneous media. 

Moderator BIO:

 Working out of Stockton, California, John Lambie has over 35 years of experience performing geohydrologic studies for water resources. His work includes advanced data collection and analysis including two patents and published methods in data analytics. John began his career in the 1980s using the USGS Finite-Difference Model on mainframe computers (now known as MODFLOW). He has developed and analyzed a number of models for alluvial and bedrock aquifers in California using a variety of simulation codes. In the past 10 years, he and his team have developed novel geospatial analytics to better understand the near-surface lithology and aquifer zones to evaluate and design managed-aquifer-recharge (MAR) options.

BECOME A SPONSOR!

Contact Staff at staff@grac.org

Gold:

• Recognition on the sponsored GRACast page of the website
• Special thanks and priority placement of your logo on all promotional emails relating to the sponsored cast (time permitting)
• Special thanks and priority placement of your logo on two presentation slides, one at the beginning and another at the conclusion of the cast
• Opportunity to provide a bio of your company for the moderator to read at the intro of the cast
• One 1/3 page ad in HydroVisions
• Two registrations to the sponsored cast

Silver: 

• Recognition on the sponsored GRACast page of the website 
• Special thanks and your logo on all promotional emails relating to the sponsored cast (time permitting) 
• Special thanks and your logo on two presentation slides, one at the beginning and another at the conclusion of the cast 
• One registration to the sponsored cast

CONTACT INFORMATION:

If you have any questions, please contact John Lambie at jlambie@e-purwater.com or (209) 451-5933