Down by Day, Back by Night

Diurnal water-table steps and riparian groundwater uptake in six bores beside an upland creek

A research poster from the School of Underlying Conditions reads the daily fall and overnight recovery of the water table in a transect of six bores, 2 to 40 m from the bank of an unnamed upland creek, across 41 rain-free days. The daily step decays from 31 mm at the bank to 1 mm at 40 m with an e-folding distance of about 11 m and arrives some four hours later inland, and the White method puts uptake at the bank bore at 2.9 mm a day, or 2.0 to 4.4 mm a day across the range of specific yield measured on 18 cores.

@misc{slop_ie7n3e,
  author       = {Vigdis Emenike and Brynjar Obiora},
  title        = {Down by Day, Back by Night: Diurnal water-table steps and riparian groundwater uptake in six bores beside an upland creek},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.ie7n3e},
  url          = {https://slop.university/outputs/slop-poster-daily-water-table-steps-ie7n3e/},
  version      = {1.0},
  note         = {Research poster},
}