The Sacramento Branch is pleased to present:

Reflections on Stream Depletion....Staying on Course

Deborah Hathaway, P.E.
S.S. Papadopulos & Associates, Inc.


Stream depletion assessment is critical in developing plans for sustainable groundwater management, necessary to avoid adverse impacts to other users and the environment. Measurement, monitoring and modeling... these are the topics of research, analysis and debate.  These will yield the results that will govern groundwater management, and potentially, will spark litigation. Managers must navigate a turbulent and foggy sea of information, aiming to stay on course towards practical solutions for satisfying fundamental water needs. Focus on fundamentals provides clarity, with complexity reserved for special and articulated purposes. Historical perspective is useful in this process, as are state-of-the art groundwater models and user interfaces for practical understanding of key processes.  Stream depletion concepts and an interactive analysis approach are illustrated with a screening-level assessment of hypothetical groundwater management actions for the Scott Valley in Siskiyou County.


Ms. Hathaway is a hydrologist with expertise in regional water planning, groundwater model development, groundwater-surface water interactions, groundwater sustainability evaluations, and groundwater quality.  Ms. Hathaway, Vice-President of S.S. Papadopulos & Associates, Inc., opened the Western office of S.S. Papadopulos & Associates in Boulder, Colorado, in 1994.  Ms. Hathaway has worked on stream depletion analyses since 1982, when she worked with New Mexico State Engineer Steve Reynolds in evaluating the effects of groundwater appropriation and transfer on inter-connected streams.




In-Situ Inc. designs, manufactures, and rents water level, water quality, and flow monitoring instrumentation for groundwater, surface water, and coastal waters. Known for innovating top-quality water monitoring equipment, they also provide a full-solution for decision-quality data via easy integration with telemetry and data services. For over 40 years, In-Situ products have provided accurate results and reliable operation in harsh monitoring conditions. Applications include aquifer characterization, mining, oil/gas, remediation, aquaculture, and more. In-Situ offers world-class technical support 24/7 through a global network of regional offices and distributors, and is headquartered in Fort Collins, Colorado, USA. Please visit or, or call 1-800-446-7488.



All Proceeds to Benefit Science Students

The GRA Sacramento Branch has a history of supporting university-level science students. Our Scholastic Sponsorship Program is an opportunity to publicize your business while contributing toward a good cause. The cost is minimal; if interested, please contact Ellen Pyatt at (530) 219-4953 or


Social Hour - 5:30-6:30 p.m.
Announcements & Dinner - 6:30-7:30 pm
Presentation - 7:30-8:30 pm
Usual great food, including two meat entrées, salad, rice, potatoes, vegetable and Iced Tea. A No-host beer and wine bar will be available.


Members: $27.00
Non-Members: $32.00
Students: $10.00

  • If you register after Noon on Monday, September 11th, or walk-in, a $3.00 surcharge will be added to the meeting cost.
  • Cancellations must be made by Noon on Monday, September 11th.

Questions about the meeting, please telephone Rodney Fricke at 916-407-8539 or email him at  Questions about Sacramento Branch in general, including submittal of your ideas and/or desires for future presentations, please telephone Linda Bond at (530) 757-1500 or email her at


October 11th: John Kornuc, Ph.D., Physical Scientist, Naval Facilities Engineering and Expeditionary Warfare Center, An Overview of PFASs and their Concern to the Navy

November 8th: Rick Cramer, P.G. with Burns & McDonnell, Groundwater Sequence Stratigraphy: Geology-Based Hydrogeologic Conceptual Models for Successful Groundwater Remediation and Groundwater Sustainability

December 13th: John Fio, Principal Hydrologist with HydroFocus, Inc., Technical Consensus and Multi-Party Sustainability Planning, Westside Groundwater Basin



Wed, Sept. 13, 2017
5:30 p.m. - 8:30 p.m.

Event has ended


Aviators Restaurant
6151 Freeport Blvd
Sacramento, California 95822

Aviator's Restaurant at the Sacramento Executive Airport
6151 Freeport Blvd., Sacramento, CA
Aviator's Restaurant is located within the aircraft Terminal Building.
Plenty of free parking.