Dettifoss is the most powerful waterfall in Europe. It's located in Vatnajökull National Park in Northeast Iceland. It is situated on the Jökulsá á Fjöllum river, which flows from the Vatnajökull glacier and collects water from a large area in Northeast Iceland. The falls are 330 ft (100 m) wide and have a drop of 150 ft (45 m) down to the Jökulsárgljúfur canyon. It is the largest waterfall in Europe in terms of volume discharge, having an average water flow of 193 m3/s.