​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​The Tellus survey is a national programme to gather geochemical and geophysical data across Ireland – in other words, to examine the chemical and physical properties of our soil, rocks and water.

Tellus is undertaken by Geological Survey Ireland and is funded by the Department of the Environment, Climate and Communications. All data from Tellus is made available free of charge online.

Tellus involves two types of surveying:

– airborne geophysical surveying using a low-flying aircraft. To find out where the Tellus aircraft is flying you can view the weekly flight plan here.

– ground-based geochemical surveying of soil, stream water and stream sediment. Check out where our ground survey teams are sampling here.

For more information on the Tellus survey contact the Tellus Freephone Information line on 1800 45 55 65.