Recently AquaVector, the new generation groundwater sensor for measuring flow rate and flow direction, has carried out its first measurements for Rijkswaterstaat. The measurements took place along the Twente Canal. During dredging works in 2010, a part of the impermeable layer on the bottom of the canal was removed. As a result, water leaks away from the canal towards the surrounding. To determine the extent of the leakage, 7 AquaVector sensors were employed during a test. This test consisted of the temporary raising of the water level in the canal with 35 cm with respect to the target level, followed by the temporary lowering of the water level by 20 cm with respect to the target level. Baseline measurements were carried out prior to the test to capture how the groundwater flow around the canal responds to fluctuating water levels. The measurements will continue for some time and in the meantime we will analyze the data and further map the geohydrological situation.
AquaVector is an initiative of Ad van der Horst en Therus Gieling.
