NORTH SIOUX CITY, S.D. (AP) – A swollen river that threatened homes where Iowa, Nebraska and South Dakota meet already has crested. The National Weather Service had predicted that the Big Sioux River would hit a record high around midday Friday. But the agency said early Friday that the river crested at Sioux City, Iowa, around midnight a couple of feet below the previous record. The reason for the change wasn’t immediately clear.

Todd Heitkamp with the weather service in Sioux Falls says the river level should hold steady and eventually recede. Crews built a temporary levee across Interstate 29, which should protect much of the city but closed off the interstate and forced motorists onto detours.