SIOUX FALLS, S.D. (AP) – U.S. Sen. John Thune says a bipartisan group of 14 senators in Missouri River states is requesting a Senate hearing to look into the Army Corps of Engineers management of the river before recent historic flooding. The South Dakota Republican says the group has sent a letter to the leadership of the Senate Environment and Public Works Committee requesting a hearing. The letter was signed by senators from South Dakota, North Dakota, Montana, Nebraska, Missouri, Kansas and Iowa.

The corps has been criticized for its management of Missouri River reservoirs in the Upper Midwest that have been swollen by heavy spring snowmelt and rains. Some dam releases have been at record levels. The corps has said the reservoirs were in good shape to handle spring runoff until record rains fell upstream in May.