1. THE SACRAMENTO REGIONAL MODEL Model Overview and Potential Applications Norm Jones Michelle Smilowitz

2. Company Background  Software development  Training  Consulting www.aquaveo.com Arc Hydro Groundwater

3. Project Objectives  Regional groundwater model  ASR design and optimization  Flexible and cost-effective  Incorporate the latest data  Accurate representation of regional hydrogeology

4. Code Selection 1 1 2 4 11 9 5 7 8 3 10 6 1.Confined/unconfined aquifers 2.Interbeds 3.Faults and barriers 4.Confining units 5.Rivers 6.Drains and springs 7.Streams 8.Reservoirs 9.Recharge 10.Evapotranspiration 11.Wells MODFLOW

5. Model Domain

6. Conceptual Model - Hydrogeology

7. GeoSections

8. Wedge Model - Outcropping

9. Ancestral Streams

12. Riverbank Model Layer 1  Consists of sands, silts, and clays from floodplain and alluvial deposits  Superjacent ancestral stream channels cut across this formation creating lateral channels of gravels and unconsolidated sediments

13.  Predominantly consists of sands, silts, and clays  Superjacent ancestral stream channels cut across this formation, creating lateral channels of gravels and unconsolidated sediments Turlock Lake Laguna Formation Model Layers 3,4 and 5

14.  Composed of two dominant units:  Black andesitic sands “salt and pepper sand” and blue and brown clays  Hard gray and black tuff-breccias “lava” Mehrten Formation Model Layers 6,7 and 8

15.  Consists of rhyolite ash, quartz sand, and ashy clay Valley Springs Formation Model Layer 9

16.  Consists of sandstone, silts, and clays Ione Formation Model Layer 10

17. Rivers, Streams, and Canals

18. Water Demand/Recharge Calculations Automated GIS Workflow GSSHA Simulation Recharge Coeffs Master Land Use Files Water Unit Demand Factors Water Year Master Land Use Files Water Unit Demand Factors Water Year Calculate Change in Land Use Calculate Total Applied Water Calculate Water Demand Total Applied Water and Precip Total Recharge Recharge to MODFLOW Total Flow from Ungaged Watersheds Lateral Inflow to MODLFLOW Calculate Recharge Model Calculate Demand Summary Water Budgeting and Accounting Distribute Demand GSSHA simulations Recharge coeff. for each STLU for each water year

19. Steady State Calibrated Heads

20. Roseville Pilot Test Calibration

21. Mokelumne River

22. Model Applications  Contaminant transport analysis  Design of remediation systems  ASR design and optimization  Probabilistic modeling and risk analysis  Water banking and exchange  Surface water/ground water interaction

23. ASR Simulation

24. Summary  Realistic and accurate model of regional hydrogeology  Incorporates the latest field investigations  Based on MODFLOW suite of codes  Rapid response as questions and opportunities arise  Effective communication of results  Low-cost development and maintenance

25. Contacts Norm Jones (801) 422-7569 njones@aquaveo.com Michelle Smilowitz (305) 899-5798 msmilowitz@aquaveo.com Royd Nelson (801) 302-1400 royd@aquaveo.com Derrick Whitehead (916) 774-5770 dwhitehead@roseville.ca.us Cathy Lee (916) 746-1703 clee@roseville.ca.us