How does one typically find the water level in a well for an unconfined aquifer?

To find the water level in a well for an unconfined aquifer, the most accurate method is to directly measure the height of water in the well. This approach involves using a measuring tape, electric water level meter, or similar device to determine how far the water surface is from the top of the well casing. Since unconfined aquifers are directly influenced by atmospheric pressure and their water level can fluctuate due to various factors such as precipitation, evaporation, and groundwater extraction, direct measurement provides the most immediate and precise data regarding the water level.

In contrast, measuring pressure inside the well is typically associated with confined aquifers where pressure is exerted by the water column, rather than measuring the water level directly. Calculating the depth to the impermeable layer can provide context about groundwater movement and storage but does not directly indicate the current water level in the well. Observing surface water flow can give insights into the hydrology of the area, but it also does not reflect the specific water level within the well itself.