The Horns Rev landscape is stable and has not changed its position since its formation. Horns Rev consists of sand, gravel, pebble gravel and stones with only few pockets of fine materials. South of the reef and south of the windfarm area there are large areas designated for the recovery of raw materials.

The geo-technical surveys have influenced the choice of foundation principles.

The water depths vary between 6 and 14 meters in the windfarm areasI