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Water 2019, 11(4), 784; https://doi.org/10.3390/w11040784

Methods of In Situ Assessment of Infiltration Rate Reduction in Groundwater Recharge Basins

Research Group INOWAS, Department of Hydrosciences, Technische Universität Dresden, 01069 Dresden, Germany
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Received: 6 March 2019 / Revised: 2 April 2019 / Accepted: 11 April 2019 / Published: 16 April 2019
(This article belongs to the Section Hydraulics)
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Abstract

As an alternative to the use of tracers, easy-to-measure soil moisture dynamic parameters (e.g., water content) provide in situ estimates of the infiltration rate reduction state of a soil medium. For instance, managed aquifer recharge operations control the hydraulic state of their infiltration basins by measuring the infiltrated volume under constant head conditions. Instantaneous profile measurement systems can be used to manage the basins by determining the reduction of the infiltration rate over time. This study combines the empirical methods of Libardi, the self-developed water content and root mean square difference-based procedures and the trigger time method, to get a similar reproduction of tracer results from river water spreading basins. The methods based on water content showed a good fitting in comparison to the results obtained with the tracer experiment and represent a promising source for detecting changes in the flow impedance during infiltration events. View Full-Text
Keywords: infiltration rate; hydraulic properties; tracer; groundwater recharge; vadose zone infiltration rate; hydraulic properties; tracer; groundwater recharge; vadose zone
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Barquero, F.; Fichtner, T.; Stefan, C. Methods of In Situ Assessment of Infiltration Rate Reduction in Groundwater Recharge Basins. Water 2019, 11, 784.

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