Which method is commonly used to assess groundwater levels?

The method commonly used to assess groundwater levels is the use of monitoring wells. Monitoring wells are strategically installed in the ground to create access points where groundwater can be measured directly. These wells allow for accurate readings of the depth to the water table and the quality of the groundwater.

The significance of monitoring wells lies in their ability to provide real-time data, enabling consistent tracking of changes in groundwater levels over time due to various factors such as precipitation, drought, or human activities like extraction. This method is highly reliable, making it a standard practice in hydrology and environmental monitoring.

In contrast, geological mapping entails studying the distribution and composition of geological formations and does not directly measure groundwater levels. Satellite imagery can offer insights into land surface features and changes, but it lacks the precision needed for evaluating underground water levels. Soil sampling focuses on analyzing the physical and chemical properties of soil and is not designed for measuring groundwater characteristics.