BISMARCK, N.D. (AP) – U.S. Sen. John Hoeven and North Dakota Gov. Jack Dalrymple say the Army Corps of Engineers is sending a team to help the Standing Rock Sioux Reservation deal with Missouri River flooding.

The two officials say Tribal Chairman Charles Murphy and the corps notified them Monday that corps officials were en route to the reservation that straddles the North Dakota-South Dakota border to work with tribal government.

The corps is releasing record amounts of water from river dams because of runoff from heavy spring snowmelt and rains. The high water is threatening homes, tribal infrastructure and access to such facilities as the hospital on the reservation.

In Bismarck, officials say the three sandbag sites have been turned over to volunteers. National Guardsmen have turned their focus to delivering the sandbags.