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Ouachita River Reach Profile Exercise

Ouachita section

Exercise Objective

To apply Rosgen Level II profile analysis and determine various FGM characteristics on the single threaded Ouachita River reach.

Exercise Process

  1. Obtain a high resolution map of the picture shown on this page by right clicking on the image with your mouse to Save Target As … on your computer. Note the Ouachita River reach of interest between points A and B on this map.
  2. View the high resolution map 06_55_01a.jpg in ImageJ and determine profile FGM properties. In Level II, morphological parameters measured using the channel profile data are often confirmed and refined by in-field measurements. Since most cannot readily get to this field site, we are providing some data for consideration. Take a moment to review the planview image and note the pattern for the channel, as this will help you critically evaluate the field data provided.
  3. Measurements were taken for elevation, but distance must be measured.
    • Water surface elevation at point A was 709 feet
    • Water surface elevation at point B was 671 feet
    • Distance between points A and B in feet
  4. Please save your measurements for future application in this exercise.
  5. Compute the following:
    • Water Surface Slope

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