What is the primary use of an observation well?

The primary use of an observation well is to measure water levels in an aquifer. Observation wells are specifically designed to monitor changes in groundwater levels over time, which is essential for understanding the hydrological conditions of an aquifer. By regularly measuring water levels, hydrogeologists and environmental scientists can assess the quantity of available groundwater, evaluate trends in groundwater recharge and discharge, and manage water resources effectively.

This data is crucial in various applications, such as water resource management, environmental monitoring, and planning for drought conditions or flood risks. Monitoring groundwater levels helps to inform policies regarding water usage and conservation, making observation wells critical tools in sustainable groundwater management.