The Aquavision groundwater velocity meter is used to determine the velocity, direction, and particle size of the groundwater under measurement. The system generates thousands of data in a minute so that statistically reliable data is obtained after one hour. Applications Calibration of groundwater models Determination of underground water rupture areas Locations for monitoring of elevation and injection wells Investigation of tidal effect Sensors and flow meters le are made precisely in solving the legal disputes of polluted ground water. With Aquifer Test Pro pump test software working in accordance with the sensor data format, all analyzes are automatically performed and calculated.