WG - Lidar - Bathymetry - Public

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  • 1.  Cork Sniffing flights.

    Posted 10-24-2024 03:12 PM

    I just heard bathy-lidar described as a high-risk data collection event.

     

    Is there a recommendation or price point for a 'cork sniffing' data collection flight? Do companies have a policy to check if collecting data over a waterbody will produce useful/actionable data?

    Promising lidar bathy data over dark water, dark bottom, soft organic bottom, seagrass, or turbid conditions is overpromising. Delivering expensive and useless data harms corporate reputations, angers clients, and damages confidence in bathymetric lidar science.

    The NV5 presentation today also shares a useful rule of thumb recommendation to only collect over water with a minimum of 3-5 feet Secchi.

    Mobilization costs may make 'cork sniffing' flights cost prohibitive, but the cost of delivering junk makes recommending them worth it.

     

    I hope this is helpful.

     

    Ed

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  • 2.  RE: Cork Sniffing flights.

    Posted 10-26-2024 12:23 PM

    The  BWG meeting we had Friday at the workshop, though not advertised as the BWG meeting, worked through a number of items with this being a big one, Risk Management. 

    Part of this is education and use of language/managing expectation but we all need to make sure we acquire the data intended and communicate clearly the risk and limitations involved.



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    Nicholas Johnson
    Physical Scientist
    USACE
    Kiln MS
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