Some residents near Waterloo will be spending the day cleaning up damage from tornadoes that ripped across northern Black Hawk County last night. Perhaps as many as a dozen tornadoes tore through the area. A rural church north of Waterloo was destroyed along with several farm houses and buildings. Power lines and tree limbs are down, blocking some roads. The Dunkerton grain elevator was badly damaged, as was a nursing home. Black Hawk County Emergency Management director Gary Blair traced the path of the twisters. One of the ten people hurt is an elderly woman who was rescued after being trapped in a house that collapsed. Despite the injuries, Blair says it could have been much worse. Some areas, like the town of Dunkerton, got up to six inches of rain, prompting flash flooding. There was also golf ball-sized hail.