Brandel - Planning County Ditch Projects

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  • 1. Planning County Ditch Projects Utilizing LiDAR
    • June 4, 2009
    • Chuck Brandel, P.E.
    Improving Efficiency and Saving Money
  • 2. Overview
    • Why LiDAR?
    • Analyzing Alternatives
    • Example Project
    • Limitations of Data
    • Cost Savings
  • 3. Why Use LiDAR on Ditch Projects?
  • 4. Why Use LiDAR on Ditch Projects?
    • Preliminary Planning
    • Cost Estimating
    • Watershed Delineation
    • Initial Stormwater Modeling
    • Earthwork Calculations
    • Alternative Site Selection
  • 5. Why Use LiDAR on Ditch Projects?
    • Can all be completed without a traditional (and expensive) topographic survey
  • 6. Blue Earth County Ditch 57
  • 7. Shaded Relief Map from LiDAR
  • 8. Color Relief Map from LiDAR
  • 9. Survey Resolution - USGS
  • 10. Survey Resolution - LiDAR
  • 11. Alternative Treatment - Inline Storage
  • 12. Alternative Treatment - Detention
  • 13. Alternative Treatment - Two Stage Ditch
  • 14. Alternative Treatment - Surge Pond
  • 15. Alternative Treatment - Restoration
  • 16. Why Use LiDAR on Ditch Projects?
  • 17.  
  • 18.  
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  • 20.  
  • 21.  
  • 22. Limitations of the Data
    • Vegetated and Wooded Areas
    • Ditch Bottoms
    • River and Stream Interactions
    • Tile Inlets
    • Culvert Crossings
    • Stream/Ditch Bank Erosion
    • Developing Areas
  • 23. Thank You! Chuck Brandel, P.E. chuck.brandel @ is-grp.com