In this section, we will use the application to determine the topographical properties of a road and use the information to align with Best Management Practices when preparing for erosion control.

Step 1

  • Let’s begin by staying in the same tab and now zoom in closer to the Blue Dot.
  • Click on the Elev. Profile button, and then the Draw Polyline button. This will allow you to visualize the elevation profile of a potential road segment so you can adequately plan for BMPs and erosion control.

Step 2

  • Click on the road segment NW of the blue dot to add a vertex and proceed by dragging the line along the road, adding vertices when you need to change directions. Double click to end the road segment. Type a Project Name in the Elevation Profile window and click Report.
  • The elevation profile is automatically calculated for the delineated road segment. The interactive graph shows the altitude, distance from start, and percent slope along points in the profile. The Elevation Profile Report is generated and summarizes results of the analysis. This information can be used as inputs for the waterbar and wing ditch spacing charts in the Texas Forestry BMP Handbook or mobile application.

Step 3

Use the Elevation Profile Report to answer the following questions.

**HINT: Draw the road as close to the example as possible to get the most accurate answer. If you still cannot find an answer that matches those on the quiz, study the image to the right.

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