Regular measurement and charting of water levels assists in assessing well performance and is the first step to ensure a safe and reliable groundwater supply. These activities will help to identify problems before they become serious and possibly jeopardize your water well supply.
The selection of an appropriate measurement method will depend on the well's accessibility, the water depth and the desired measurement frequency. Water level measurement devices that are commonly used include electric sounders, sonic water level meters and electronic pressure transducers. Devices with data logging capabilities are also desirable since manual readings are not required and data can be collected on a continuous basis.
Once a suitable measurement device is selected, the well owner should record water well levels on a regular basis (i.e. weekly or monthly). This data can be then be stored, charted and reviewed to evaluate the well performance.
To ensure consistency and comparability of water level measurements, a regular measuring point must be established, such as the top of casing. When recording water levels the following information should be included:
To assist in evaluating water level measurement data, a water level charting tool has been designed to plot water levels over time. This tool will allow you to enter the water level data you have collected, so you can see any trends and determine if any problems are developing. This tool is intended for water levels that are being measured with electronic pressure transducer type devices.