How much water falls over the crest at the peak flow of gullfoss falls?

At peak flow, approximately 140 cubic meters (or 4,900 cubic feet) of water per second cascades over the crest of Gullfoss Falls in Iceland. This dramatic waterfall features two tiers, with a total drop of about 32 meters (105 feet). The impressive volume of water contributes to its status as one of Iceland's most iconic natural attractions.