THE SACRAMENTO REGIONAL MODEL

Project Review and Final ReportNorm Jones

Michelle Smilowitz

Company Background

Software development

Training Consulting

www.aquaveo.com

Arc HydroGroundwater

Derrick

Modeling Protocol

Adapted from Anderson & Woessner, 1992

Norm

Michelle

Norm

Comparison with

Field Data

Field Data

Field Data

Field Data

*includes sensitivity analysis

Define Purpose

Conceptual Model

Code Selection

Model Design

Calibration*

Prediction*

Postaudit

Are the capabilities of the code consistent with the modeling objectives?

Is the code verified and well-established? Can the code simulate each of the critical

processes in the conceptual model at a sufficient level of accuracy?

Is the code easy to use and maintain?

Code Selection Criteria

Parsimony

“Everything should be made as simple as possible. But not simpler.” – Albert Einstein

Groundwater models should be complex enough to be useful, yet simple enough to be cost-effective and manageable.

MODFLOW

Developed and supported by the USGS

Public Domain Widely-used Rich suite of add-

ons, utilities, & companion programs

Cost-effective

1

1

2

4

119

57

8

3

10

6

1. Confined/unconfined aquifers2. Interbeds3. Faults and barriers4. Confining units5. Rivers6. Drains and springs

7. Streams8. Reservoirs9. Recharge10. Evapotranspiration11. Wells

Particle Tracking with MODPATH

Contaminant Transport Modeling

MT3DMS, RT3D, SEAM3D

Surface Water/Ground WaterInteraction

Losing River

Gaining River

Disconnected River

Flow budget output Detailed summary of

SW/GW exchange quantities

River package (RIV) Stage specified

Streamflow-routing package (SFR) Flow specified Routing Stage calculated

Surface Water/Ground Water

Low development cost 12 months $267,000

Cost savings due to Mature suite of pre- and post-processing

tools Leveraging GIS linkage and tools Model portability – widespread expertise

Development and Maintenance Costs

12

Groundwater Modeling System (GMS)

Conceptual Model - Site Map

Clearwater Well

StillwaterReservoir

WhitewaterRiver

BigwaterLake

Feature Objects

Well PointGeneral Head

PolygonRiverArcs

Specified Head Arcs

Variable Head

Polygon

Grid-Based Numerical Model

Arc Hydro Groundwater

Data model and tools for managing groundwater data in ArcGIS