I'm looking for methods used to monitor water table levels:
- How do you monitor levels generally throughout the year, and how do you manage pumping during droughts?
- How do you follow up on a daily basis on drawdowns during the pumping phase, and what real-time analyses do you perform?
Thx for your answers
A worthwhile approach is to install piezoelectric sensors coupled with a recording and measuring device.
That way you can see how fast the water table reaches its dynamic level and how long it takes for it to return to a static level after the pumps are stopped.
It is important to know the depth of the suction strainer so the sensor is placed in the right spot to determine the height of the water above the suction point.
As you accumulate historical data, this will enable you to determine the different phases at which boring is undertaken during the course of the year and eventually help reduce the volume extracted on a daily basis during critical dry weather periods.
Decreasing the pump flow rate may degrade its performance, so it is preferable, if possible, to reduce pumping time.
Indeed, it is imperative to install a level sensor (piezoelectric) with continuous recording and remote management.
Veolia has developed a monitoring tool specifically for performance, operation and management of water intake.