Landfills are technical constructions for long-term disposal of ultimate waste. Due to the property of nature to sensitively respond to every kind of interference within its complex cycle of water-rocks-air, construction and operation of landfills convey a particular meaning.

The determination of soil hydrological parameters and the recording of weather data are nessesary for design , function evidence and long-term water balance control of surface sealing systems.

For this purpose, soil hydrological measuring fields or lysimeter stations are built and instrumented with probes for soil moisture, water tension and soil temperature, with measuring equipment for recording leakage water amount and with suction cups for soil water sampling.

Weather stations at landfills record the local weather data which can influence the water balance, such as air temperature and humidity, air pressure, wind speed and direction, as well as precipitation and radiation rate.

Furthermore, measuring technique is used within the groundwater monitoring in upstream and downstream flow of landfills and within the determination of landfill leakage water and gas.