Abstract
Various groundwater velocimeters were developed to measure groundwater flow. However, those conventional velocimeters need electricity as well as high cost. Our objective was to develop the low cost and unplugged groundwater velocimeter. In this study, single dot type paper disk groundwater velocimeter was tested. Calibration of the velocimeter was done with calibrating sand vessel. As a result of the study, with 5 minutes measurement, velocity range of 0.3 cm/min-1.5cm/min could be measured. With 60 minutes measurement, velocity range of 0.03cm/min-0.1cm/min could be measured. From the result of the field observation, flow direction of the calorimetry method matched our method for sufficient length of the dot tailing on the paper disc.
