CHaMP-Management

The CHaMP Topo Toolbar is designed to guide the user through the production of a high-resolution digital elevation model (DEM) from topographic survey data collected using the CHaMP protocol. The general workflow involves importing survey data into ArcGIS, projecting/transforming the unprojected survey data (if the survey is the first for a site), editing the survey data, building and editng a Triangulated Irregular Network (TIN) from the survey data, building and editing a Digital Elevation Model (DEM) from the TIN, and generating a water depth map from the DEM.

The CHaMP Topo Toolbar provides custom tools for creating, inspecting, and editing the datasets required for producing high-resolution DEM’s from total station survey data. In addition, the Coordinate Transformation Tool can be found in the CHaMP toolbar.

Following is a list of the steps that are taken to process topographic survey data:

1. scouting pre-survey

• Export Control File
• Scout Map

1. Create Survey GDB

2. process survey data

• Update Z values for Breakline Vertices
• Validate Description Codes
• Process Instrument File
• Survey Quality Report
• Load Survey Data
• Transformation Tool
• Survey Extent Polygon

1. generate topographic surfaces

• Create Topo TIN
• Convert TIN to DEM
• Detrend
• Review TIN Integrity

1. generate channel features

• Bankfull Extent
• Wetted Extent
• Digitize Channel Unit Polygons
• Verify Channel Units and Clip
• Stream Surface
• Thalweg
• Bankfull Centerline and Islands
• Bankfull Cross Sections
• Wetted Centerline and Islands
• Wetted Cross Sections

1. survey evaluation

• 3D Point Quality Raster
• Interpolation Error Raster
• Point Density Raster
• Roughness Height Raster
• Slope Raster
• Survey Error Raster

1. finalize

• Map Images
• Note
• Publish
• Survey Review
• Validate Data

1. advanced tools

• Add LiDAR to survey
• Clean Transformation
• Clear Workspace
• Options
• Prepare Survey For New Transformation
• Substrate Raster Generation (batch process)

1. technical reference

• Font Size Issues in ArcMap
• Methods
• Topographic Point Quality
• troubleshooting
• ArcMap Screen Resolution

We have developed a system for troubleshooting problems with the GIS processing of the survey data. Please follow these steps if you encounter any problems in the GIS processing workflow:

1. CHaMP topographic data processing toolbar http://champtools.northarrowresearch.com.

2. CHaMP Topographic Processing Quick Guide (2013): This document contains the recommended workflow for CHaMP Topographic Processing. Also note additional guides for ArcGIS and Foresight, and tutorials.

3. Help menus and videos: http://champtools.northarrowresearch.com.

4. CHaMP GIS Processing Video Tutorials: A series of video tutorials is available for download: http://champtools.northarrowresearch.com/video-tutorials. Videos are always accessible via YouTube

5. ArcGIS Help Resources for learning basic functions of ArcGIS: http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html