The Sacramento regional model

THE SACRAMENTO REGIONAL MODEL

Model Overview and Potential Applications

Norm JonesMichelle Smilowitz

Company Background

Software development

Training Consulting

www.aquaveo.com

Arc HydroGroundwater

Project Objectives

Regional groundwater model ASR design and optimization Flexible and cost-effective Incorporate the latest data Accurate representation of

regional hydrogeology

Code Selection

1

1

2

4

119

5

7

8

3

10

6

1. Confined/unconfined aquifers

2. Interbeds3. Faults and barriers4. Confining units5. Rivers6. Drains and springs7. Streams8. Reservoirs9. Recharge10.Evapotranspiration11.Wells

MODFLOW

Model Domain

Area Acres % Model Domain

North American Sub Basin 340,170 39.2%

South American Sub Basin 247,745 28.5%

Cosumnes Sub Basin 280,490 32.3%

Total Model Domain Acreage: 868,405 100.0%

AREAS

Conceptual Model - Hydrogeology

GeoSections

Wedge Model - Outcropping

Ancestral Streams

Ancestral Streams

Ancestral Streams

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

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 FormationModel Layers 3,4 and 5

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 FormationModel Layers 6,7 and 8

Consists of rhyolite ash, quartz sand , and ashy clay

Valley Springs FormationModel Layer 9

Consists of sandstone, silts, and clays

Ione FormationModel Layer 10

Rivers, Streams, and Canals

Losing River

Gaining River

Disconnected River

Water Demand/Recharge Calculations

Automated GIS Workflow

GSSHA Simulation Recharge Coeffs

Master Land Use FilesWater Unit Demand

FactorsWater Year

Calculate Change in Land

Use

Calculate Total Applied Water

Calculate Water DemandTotal 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

Steady State Calibrated Heads

Roseville Pilot Test Calibration

Mokelumne River

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

ASR Simulation

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

Contacts

Norm Jones

(801) [email protected]

Michelle Smilowitz


Royd Nelson


Derrick Whitehead


Cathy Lee


Documents

The Sacramento regional model