Research in the HOAL / Groundwater
17 April 2019

Maintenance at the weather station

On 17th of April there was a big maintenance at the HOAL weather station with repairing and...


15 April 2019

Professor Thomas Dunne visiting the HOAL

Professor Thomas Dunne is an expert of fluvial geomorphology and hydrology, working at the...


08 November 2018

Geophysical mapping

In October Geophysics students from TU Wien were operating electromagnetic induction (EMI)...


08 October 2018

Installing new Piezometer stations

For getting information about groundwater new piezometer stations are built. In this case the...


Science Questions – What are the Dynamics and Controls of Subsurface Flow and Transport?

Much of the pollution in the landscape moves in the subsurface. The timing and location of pollution transport is driven by the groundwater dynamics. Groundwater levels and chemical characteristics are monitored at numerous locations within the HOAL.

A number of geophysical surveys are being conducted to improve the delineation of hydrogeological heterogeneities and processes in the subsurface. The techniques include ground penetrating radar, induced polarization and low-induction number electromagnetic induction methods. The information on the subsurface so obtained is combined with numerical flow and transport models.

To understand the stream-aquifer interactions several tracer tests were performed. These tests allowed the estimation of stream bank fluxes. Infrared cameras are used to identify hotspots of groundwater recharge into the stream. Mass balances over sections of the stream are used to determine the role of near-stream riparian trees on the daily fluctuations of the stream flow during low flow conditions.

HOAL monitoring