This document describes SiteFX and VIEWLOG software systems for environmental data management, hydrogeologic modeling, and integrated groundwater/surface water modeling using GSFLOW. The key capabilities mentioned include database management, data analysis and visualization tools, borehole logging, contour mapping, time series analysis, and integrated groundwater/surface water modeling to simulate processes like recharge, discharge, streamflow, and water table fluctuations.

1. 1

2. 2
SiteFX
Environmental Data
Management System

3. 3
Sitefx GW Database
► Database Management system with:
 Data entry, sample tracking, and
scheduling
 Sample program design and reconciliation
 Data standardization (analytical chemical
names and units)
 Data validation (including range checking)
and data criteria screening
 Reporting and advanced time-series
graphing
 Parametric and non-parametric statistics
and trend analysis

4. 4
VIEWLOG
Hydrogeologic
Modelling System

5. 5
VIEWLOG Borehole GIS
► VIEWLOG provides integrated data management,
visualization, analysis and modelling tools
 GIS, with intelligent, geo-science data objects
 Not just display, but meaningful data interaction
 Scalable interpretation tools, from a single fracture to
an entire watershed
 Open, flexible, database design, with dynamic
interaction with any table or query
► Over 700 users worldwide
Well Name: 34C
Elevation: 192.939
Metres Stratigraph
190
180
Overburden
Eramosa

6. 6
VIEWLOG WebServer
► VIEWLOG Webserver provides data access for a
wide range of users
 Emphasis on ease of use
► On-line functions include:
 Interactive mapping
 Color contouring
 Borehole logs
 2-point cross sections
 Basic query select functions
 Time-series graphing
US Geologic Survey Web Site built using VIEWLOG/Webserver

7. 7
VL-GSFLOW
Integrated GW/SW
Modelling System

8. 8
VL-GSFLOW
► GSFLOW: an open-source, fully-integrated Surface Water and
Groundwater Modelling system
 Surface Water model based on PRMS
 Groundwater model based on MODFLOW-NWT
► Key VIEWLOG functions include:
 Pre- and Port Processor for creating GSFLOW input files and reading
GSFLOW outputs
 Time series analysis tools
 Gridded data animation tools

9. 9
GSFLOW is a combination of two USGS codes:
MODFLOW-NWT and PRMS
PRMS handles climate and soil water processes
MODFLOW simulates GW flow, unsaturated flow (UZF),
streamflow and lakes (SFR2/LAK3)
GSFLOW Processes

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VL-GSFLOW Total Flow Routing
► GSFLOW simulates
total flow in the
streams, including
runoff and baseflow
discharge

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VL-GSFLOW Water Level Animations
► VL-GSFLOW provides
full animation and
hydrograph analysis
tools

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VL-GSFLOW Overland Flow
► GSFLOW simulates both overland flow and interflow

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Soil Zone Storage and Cascade
► GSFLOW can simulate the storage and 3D movement of
soil zone water using a cascading inter-cell network
Till uplands
Flow accumulates
in swales

14. 14
Storage and 3D movement of water in the Soil Zone
► Soil zone moisture content
Beach Deposits
Till Upland
- Till uplands drain both vertically and downslope
- Lateral drainage to the beach deposits from the till uplands enhances recharge
- Soil zone storage helps supply rate limited GW recharge to the lower layers

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Soil Zone Drainage (GW Recharge)
► When moisture is available (winter months) there is a near constant, but rate
limited, drainage from the soil zone
Beach DepositsTill Upland

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VL-GSFLOW GW Recharge
► GSFLOW provides
ground water
recharge estimates
on a daily basis

17. 17
GW Discharge to the Soil Zone (Daily)
Daily GW discharge to soil zone

18. 18
Time-varying GW Feedback
► The “contributing area” that
generates true runoff
depends on the time-varying
position of the water table
► Example: Dunnian process
response area varies
seasonally between 5 and
25% of the study area
► Runoff occurs, but it is a
groundwater dependent
process!

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Water Table Fluctuation across Layers
► Water Table rises and falls through multiple thin, variably saturated, layers
 Highly variable response to precipitation events
► GSFLOW NWT Solver – no dry cell problems!
Water Table
GW Discharge

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MODFLOW-NWT stable even when modelling steep gradients
Shows daily, seasonal, and year-to-year response in heads
Limestone
Creek
Milton
Outlier

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Simulated Stage in Reservoirs
OBSERVED PREDICTED
Kelso Lake
Hilton Falls

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Simulated Heads in Wells
OBSERVED PREDICTED
PGMN Well W00008
Quarry Well BH-112
Mohawk Raceway Well – Opsteen Farm

23. 23
Simulated Heads in Wellfield Monitors
OBSERVED PREDICTED
Campbellville – MW2/05B
Kelso
TW3/67
Kelso
TW4/67
Kelso wells out of phase with normal seasonal response.
Shows influence of high leakage from lake at summer stage

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Wellfield response to Reservoir levels
Limestone
Creek
Milton
Outlier