As predicted last weekend heavy rain fall occured in eastern Austria. Also the HOAL was affected by high precipitation rates.

In 24 hours around 90mm of rainfall occured and this led to a discharge rise at the catchment outlet from 2 l/s to around 1000,0 l/s. Compared to the mean rates (820mm/year…

Due to the old age of the H-Flumes and the poor condition, new ones were dimensioned, designed, manufactured and installed. A total of eight new "modified H-Flumes" made of stainless steel were installed.

The measured data can be used for calculating the flow paths, but also for the…

Around the start of this year the disicion was made to install new measuring weirs. These weirs are designed according to the "Field manual for research in agricultural hydrology" from the United States Department of Agriculture (Handbook number 224). By evaluating the existing measurements over the…

On 14th of November, two boreholes with depths of 8 and 6 m respectively, were drilled at the HOAL site next to the stream in the alder forest area. Previous geophysical investigations in this area have revealed a significant anomaly characterized by high induced polarization signatures, which so…

On the 5th of June, a group of students of the Vienna Doctoral Programme on Water Resource Systems, with a research interest focusing on hydrology, visited the Hydrological Open Air Laboratory, HOAL. They got an introduction about the history and ongoing projects of the Institute for Land and Water…

On 17th of April there was a big maintenance at the HOAL weather station with repairing and maintaining equipment like humidity, temperatur and wind sensors. Casings of data and power supply cables were checked for damages, which e.g. sometimes can occur by animals.

Also the weather conditions in…

Professor Thomas Dunne is an expert of fluvial geomorphology and hydrology, working at the University of California, where he is currently conducting his own research in theoretical studies in hillslope evolution, and sediment transport and river-basin sediment budgets.

On Monday, the 15th of…

Understanding water resource systems from Wissenschaftsfonds FWF on Vimeo.

In October Geophysics students from TU Wien were operating electromagnetic induction (EMI) measurements at the HOAL. Two devices with a shallow and a deep range of the signal have been used. There were several profiles on the different fields in the HOAL measured and georeferenced.

The goal is to…

For getting information about groundwater new piezometer stations are built. In this case the stations will be used for tracer tests.

Considering building these stations, soil samples were taken for soil characteristics and isotope analyses.