I have used submersible pressure on municipal water tank telemetry many times.  
I guess it would work equally well in a lake.  
.433 psi per foot.  

From: Jaime Solorza 
Sent: Saturday, February 17, 2018 1:10 PM
To: Animal Farm 
Subject: Re: [AFMUG] Lake level monitoring

You could use a stilling well with ultrasonic, or a submersible pressure, you 
could do a capacitance probe


Jaime Solorza

On Feb 17, 2018 9:12 AM, "Mitch Koep" <[email protected]> wrote:

  I saw a system that used the same system for Water tower level measuring

  Installed a screened culvert vertical, about two feet off the bottom to stop

  wave action and device float inside the culvert and a PLC controller with a 
radio link

  It seemed to work very well

  You might want to check and see what is used for sewer ponds as well

  Mitch


  On 2/16/2018 3:51 PM, Roland Houin wrote:

    I have a customer needing to monitor lake levels
    need accurate method (gps hopefully) to measure level above msl.


    Anybody have any suggestions?


    Roland Houin
    Fourway.Net




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