The interactive map below shows the seasonal groundwater regimes as determined in Stahl et. al. (2024). The figure above the map shows the seasonal cycle of groundwater levels within each of the regimes. A list of sites along with their classified groundwater regime and additional metadata is available in the Supporting Information section (xlsx file Data S1) of Stahl et. al. (2024).


(Top panel) The groundwater seasonal cycle by regime, with the seasonal cycle for each individual site shown as gray lines and the representative LOESS smoothed seasonal cycle shown as the colored lines. The x-axis shows the day of year (DOY) and the y-axis the standardized water level (WLZ). (Bottom panel) Radial histograms showing the distribution of the timing of minimum (red) and maximum (blue) water levels for all sites within each groundwater regime. The labels around the perimeter represent the months of the year starting with January (J) at the top and proceeding clockwise to December (D).




Citation: Stahl, M.O., Mar, T. and Jameel, Y. (2024), Seasonal Groundwater Level Dynamics in Unconfined Aquifers across the United States. Groundwater. https://doi.org/10.1111/gwat.13422