01 Water Cycle

01-05 Groundwater Recharge (process-based)

Infiltration, percolation, and recharge generation due to hydrological forces; climate and land-use effects. Examples include recharge estimation methods like Water Table Fluctuation and Chloride Mass Balance

Contents

Index Description
01-05-001 Estimating Groundwater Recharge with the Water Table Fluctuation (WTF) Method

01-05-001Estimating Groundwater Recharge with the Water Table Fluctuation (WTF) Method

Type: Streamlit app Time: 15–30 minutes
Estimating Groundwater Recharge with the Water Table Fluctuation (WTF) Method

Figure 1: The interactive plot to estimate recharge with the WTF method. (Screenshot)

This interactive app estimates groundwater recharge from water-level time series using the Water Table Fluctuation (WTF) method with falling-limb (recession) extrapolation for multiple recharge events. Users can work with provided example series or upload their own CSV file (date, head).

Recharge events are identified as distinct rises in the groundwater head record. For each detected peak, the app extrapolates a recession baseline using an exponential recession constant alpha and computes the event water-level surplus dh relative to this baseline. Recharge is then calculated as S_y x dh and reported in mm, where S_y is the user-defined specific yield. Results are shown as an annotated time-series plot with fitted recession curves, peak markers, and Δh indicators, along with an event table and the total recharge summed over all detected events.

LAUNCH RESOURCE

Detail Value
URL wtf-recharge.streamlit.app · open app
Author(s) Thomas Reimann (TU Dresden)
Keywords Groundwater recharge, WTF, Water Table Fluctuation
Fit For self learning
Prerequisites Basic Hydrogeology

Streamlit app details

Detail Value
Interactive plots 1 interactive plot(s)
Co-funded by the European Union
This project is co-funded by the European Union. However, the views and opinions expressed are solely those of the author(s) and do not necessarily reflect those of the European Union or the National Agency DAAD. Neither the European Union nor the granting authority can be held responsible for them.