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The Sacramento Regional Groundwater Model
Derrick WhiteheadRoseville City - Roseville, CA
Norm JonesAquaveo - Provo, UT
Michelle SmilowitzHeatwave Data - Miami, FLA
Project Setting
Roseville
• Local-scale issues– Aquifer storage and
recovery– Migration of
contaminants
• Regional-scale issues– Long-term demand– Water conservation
strategies– Banking and exchange
Objectives
Tools
MODFLOW
Model Domain
Bear River
Feather River
Sacramento River
Sierra Nevada
Mokelumne River
Hydrogeologic Characterization
3D Cross Sections
GeoVolumes
Model Grid Layering
Ancestral Streams
Stresses
Rivers, Streams, Canals Supply Wells
• US Army Corps of Engineers• Simulates
– 2D overland flow– 1D streamflow– 1D infiltration– Evapotranspiration– Deep percolation
Gridded Surface Subsurface Hydrologic Analysis (GSSHA)
1
2
3
45
67
Ungaged Watershe
ds
GSSHA Results
1
2
3
45
67
• GIS workflow– Shape files– Tables– Time series– Geoprocessing tools
• Outputs– Summary tables– Pumping files– Recharge files– Lateral inflow files
Water Demand Model
Land Use Patterns
Master Land Use File
Change from Non-urban to Urban
Farm Data
Water Unit Demand FactorsAgricultural Demand
Factors (DWR)
Urban Demand Factors
Water Year Index 2002 ITRC Crop
Evapotranspiration Rates for Eto Zone 14
ITRC Report 02-001, funded by CALFED and Agricultural Research Initiative of California State Univ.
Model Output for Representative Water Years
Normalization Factor based on Water Year Index
Monthly Conversion Factors
Steady State Calibration
• October 2006 through September 2050• Monthly time steps• Two versions– With conservation measures– Without conservation measures
Predictive Model
The Water Conservation Act introduced by Senator Steinberg sets a goal of reducing per capita urban water use by 20% by December 31, 2020, with an intermediate goal of reducing per capita water use by at least 10% by December 31, 2015.
Aquifer Storage and Recovery
Current and Future ASR Wells
Local-Scale Model
Local-Scale Model
Sample Results
