groundwater tools for gis
DESCRIPTION
Groundwater Tools for GIS. GIS in Water Resources Fall 2011. Built-in Tools. Groundwater and Hydrology Toolsets. Time-enabled Layers. Arc Hydro Groundwater Tools. Groundwater Analyst MODFLOW Analyst Subsurface Analyst 3D Features 2D Cross Sections. Groundwater Analyst. - PowerPoint PPT PresentationTRANSCRIPT
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GIS in Water ResourcesFall 2011
Groundwater Tools for GIS
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Built-in Tools
Time-enabled LayersGroundwater and Hydrology Toolsets
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Arc Hydro Groundwater Tools• Groundwater Analyst
• MODFLOW Analyst
• Subsurface Analyst- 3D Features- 2D Cross Sections
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Groundwater Analyst
Import and Manage Well Data
Point and Click Graphing Tool
Compute Time Series Statistics
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MODFLOW Analyst
Import and Export MODFLOW models
Run MODFLOW from ArcGIS
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Subsurface Analyst
3D Features
2D Cross Sections
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Subsurface Analyst – 3D
CreateGeoSections
Create GeoVolumes
Create and Edit Borehole Data
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Representing 2D cross sectionsXS2D Component
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Outline• You can create 2D cross sections in ArcGIS
• Cross sections are made of real GIS features
• Cross sections use a (S, Z) coordinate system
• Subsurface Analyst helps you create cross sections within ArcMap
• Manage cross sections within a geodatabase
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Subsurface visualization
Layers of 3D volumes that are largely unseen? ?
Visualizing the subsurface can be challenging
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Cross sections
…And interpret the rest
We can sample the subsurface…
A A’
A
A’
Wells
Section A-A’
Cross sections help us understand local geology
Map
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GIS datasets
Spatial and attribute relationships tie features together …
Borehole log
Section lines
Wells
Raster surfaces
…Creating the connectivity we need to construct meaningful cross sections
You can create cross sections from GIS datasets
Geologic features
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GIS features
Works with your ArcGIS tools
Layer symbology, attributes, geodatabase storage, editing…
Cross section features are real GIS features
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XS2D component• Part of the Arc Hydro Groundwater data model• Included in the hydrostratigraphy component• XS2D feature classes have a XS2D prefix• They exist in a special coordinate system that
translates vertical coordinates so they can be viewed in ArcMap
Additional data: XS2D_Line, XS2D_Polygon, XS2D_Point…
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Common cross section features
Cross Section
Pane
l Div
ider
Bor
elin
e
Major Grid
Minor Grid
Panel
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Additional featuresYou can add additional features using the Arc Hydro Groundwater Tools
Saltwater Interface
Surficial Geology
Or create your own features and annotation
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Section line featuresCross sections belong to a section line
A set of cross section feature classes per section line…
Simple 2D polylines Define the cross
section in map view
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XS2D Catalog• Central part of the XS2D component• Keeps track of feature classes in all cross sections• SectionID is a key attribute = HydroID of a
SectionLine feature
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Cross section data
A A’
A A’
Adding Nearby Wells
Built from Standard GIS Operations Like ‘Select By Location’ and ‘Intersect’
Add data by proximity to the section line
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Cross section data
A A’
A A’
Adding Outcrops
Add data by overlaying layers with the section line
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Cross section coordinatesCross sections use a (Distance, Elevation) coordinate system
And includes vertical exaggeration…
Each system is unique to the cross section…
xy
SZ
S
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Data frameThe Data Frame is the canvas where cross sections are drawn
EditPrint
Draft
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2D and 3D transformationsYou can convert from 2D to 3D and back again
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Building cross sectionsYou can create your own workflows for building cross sections
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Example workflow1. Select wells – wells are related with
borehole data
Tip: Select wells within a distance of a section line
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Example workflow2. Run the cross section wizard
• Click on the Section Line• Choose:
Features to Include Vertical Exaggeration Grid Line Spacing
Output is a new cross section data frame with features created
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Example workflow3. Import additional data
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Example workflow4. Sketch panels using standard ArcMap editing
tools
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Example workflow5. Arrange the layout
Add:• Legends• Annotation• More Cross Sections
Set:• Data Frame Properties• Grid Line Appearance
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Additional workflow – image registration• Start from existing cross section images.• Load and register the images to an existing
SectionLine.
• Wizard helps create necessary features (grid lines,
panel dividers, panels) based on the image registration
process.
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Image registration wizard
Register the image using vertical and horizontal lines
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Image registration wizardResult is a new data frame with registered image + XS2D feature classes
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Key points You can create 2D cross sections in ArcGIS
Cross sections are made of real GIS features - Can
take advantage of all the ArcMap capabilities
Cross sections use a (S, Z) coordinate system
Subsurface Analyst helps you create cross sections
– basic tools, XS2D Wizard, Image registration
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Water levels in a cross sectionXS2D Animation