The static water level (SWL) is the natural, undisturbed level of water in a well when the pump is not running and no water is being drawn. It represents the equilibrium point where groundwater pressure stabilizes. This level can fluctuate seasonally due to rainfall, drought, or changes in local groundwater use.

Measuring the static water level is straightforward:

1. Turn off the well pump for several hours (or longer for deeper wells).
2. Use a water level meter, sonic sounder, or airline method to measure the depth from the ground surface to the water.



Regular monitoring of static water levels helps track long-term trends in groundwater availability. A declining SWL may indicate overuse, drought conditions, or reduced aquifer recharge.

The dynamic water level (DWL) is the water level in the well while it is actively being pumped. This level is lower than the static water level due to the drawdown effect—the temporary lowering of water caused by pumping. The extent of drawdown depends on factors such as well depth, aquifer properties, pump rate, and overall groundwater conditions.

To measure the dynamic water level:

1. Start pumping the well at a steady rate.
2. Allow time for the water level to stabilize.
3. Use a water level meter or other measurement tool to determine the depth from the ground surface to the water.

A well with excessive drawdown or slow recovery may be experiencing reduced aquifer supply, well inefficiencies, or pump issues.

Tracking both static and dynamic water levels over time helps:

• Prevent overpumping – Excessive drawdown can lead to well failure or aquifer depletion.
• Identify well performance issues – Significant drops in dynamic water levels could signal clogging, pump inefficiencies, or aquifer stress.
• Plan for sustainable water use – Monitoring trends allows well owners to adjust usage and prepare for potential drought impacts.

Understanding your well’s static and dynamic water levels is key to maintaining a reliable water supply. Regular monitoring can help prevent costly repairs, improve efficiency, and safeguard your groundwater source. At Mad River Well Services, we offer professional water level testing and well performance evaluations to keep your system running smoothly. Contact us today to schedule a check-up and ensure your well is in top shape for years to come!