To quickly extract a centerline or bank arc from a raster, do the following:
| 1. Import raster images.
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- Raster data is imported into the GIS module in SMS.
- Use the Open command to import raster data files such as DEMs, KMZ files, and gridded elevation formats.
- Files can also be imported with the "drag and drop" option.
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| 2. Create Area Property map coverage.
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- Select Map Data in the Project Explorer and use the New Coverage right-click command.
- Use the New Coverage dialog to create a new coverage by selecting the desired coverage type, and naming the coverage.
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| 3. Create feature point for centerline.
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- Use the Create Feature Point
 tool to add a point in the middle of the channel on the upstram side of the raster.
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| 4. Run the extract features tool.
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- Use the Select Feature Node
 tool to select the point in the channel, then right-click and select the Extract Feature command.
- In the Extract Feature dialog, enter the input values, run TOPAZ, and run the tool to create the centerline/stream.
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| 5. Create feature point for an embankment or ridge.
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- Use the Create Feature Point tool to add a point along a bank or ridge.
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| 6. Run the extract features tool to generate an embankment or ridge.
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- Use the Select Object
 tool to select the point and the centerline/stream arc, then right-click and select the Extract Banks command.
- In the Extract Feature dialog, enter the input values, run TOPAZ, and run the tool to create the bank/ridge arc.
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