Specific test data to determine the groundwater level over time at a location.  

Information concerning groundwater levels must be captured to allow accurate site and location characterization. A groundwater data (GWD) record provides measurements collected for one well at a given day and time.  In order for the groundwater information to be entered, there must be a log date and log time.

When normal groundwater samples are taken, GWD is required.  The data submission will be considered incomplete without the GWD data, and may be rejected.

When groundwater data is collected, this table is required for Group Two data submissions.

Static water level and sounding should be measured before any equipment enters the well and each time a well is sampled or other testing (such as a pump test) is begun.  In the case of an aquifer test, only the final (post recovery) water level should be reported in GWD.  Groundwater level and sounding should be measured to the nearest 0.01 foot.   Static measurements are the measurements of the well's groundwater level under stable or calm conditions.  Wells that are dry should be noted as such.  Sounding is the total depth, in feet, measured from the measuring point elevation of the well to the bottom of a well, not the bottom of the bore hole.

Dynamic measurements are considered to be the measurements taken from a well that is undergoing current work such as purging or pumping.  Data from these tests is captured in the tables Test Well and Pump Rate.  An initial depth must be recorded for the static water depth before pumping is begun.