The Fallbach is a creek in Austria. It has a length of 7 km (4 mi) and lies in full in Innsbruck's city area. It originates near the Gramart area on the Hungerburg at 900 metres (3,000 ft) above sea level. It runs straight in southern direction to St. Nikolaus where it merges with the Inn River.Water of the creek is collected in two artifial reservoirs and supplies the areas of St. Nikolaus and Höhenstraße with drinking water. This often causes locally low water levels in the Fallbach.