Articles | Volume 25, issue 5
Hydrol. Earth Syst. Sci., 25, 2931–2949, 2021
https://doi.org/10.5194/hess-25-2931-2021
Hydrol. Earth Syst. Sci., 25, 2931–2949, 2021
https://doi.org/10.5194/hess-25-2931-2021

Research article 31 May 2021

Research article | 31 May 2021

Estimation of groundwater recharge from groundwater levels using nonlinear transfer function noise models and comparison to lysimeter data

Raoul A. Collenteur et al.

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Latest update: 05 Dec 2021
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Short summary
This study explores the use of nonlinear transfer function noise (TFN) models to simulate groundwater levels and estimate groundwater recharge from observed groundwater levels. A nonlinear recharge model is implemented in a TFN model to compute the recharge. The estimated recharge rates are shown to be in good agreement with the recharge observed with a lysimeter present at the case study site in Austria. The method can be used to obtain groundwater recharge rates at sub-yearly timescales.