Krimmler Waterfalls is a tiered waterfall. The waterfall begins at the top of the Krimmler Ache valley, and plunges downward in three stages. The upper stage has a drop of 140 metres, the middle of 100 metres, and the lowest a drop of 140 metres. The highest point of the waterfall is 1,470 metres above sea level.
The Krimmler Ache is a glacial stream whose flow varies greatly with season. Its volumetric flow in June and July is 20,000 m³/h (about 5.28 million gallons per hour), while in February it is only 500 m³/h (about 0.13 million gallons per hour). The greatest measured flow was on 25 August 1987, when it was 600,000 m³/h, or almost 160 million gallons per hour.
To ensure that tourists could see more of the waterfall without difficulty, Ignaz von Kürsinger, from Mittersill, created a path to the upper part of the waterfall. In 1879, the Austrian Alpine Club improved the road to provide a more panoramic view. About 400,000 people visit the falls annually. The misty spray of the waterfall creates ideal growth condition for hundreds of mosses, lichens and ferns. The surroundings are the habitat for 62 bird species.
There is a negative impact on the local residents due to the high traffic level in a small village, and because of erosion to the road.