When rain-swollen Lodge Grass Creek hit the Little Bighorn River just south of Lodge Grass, water started backing up on the lower portions of town, flooding Main Street. Powerful floodwaters washed out a bridge on Lodge Grass Creek on the south entrance to town and high water cut off access to Interstate 90 on the north, the mayor said.

Speelman said the IGA was flooded with about 4 feet of water, as was the post office and Lodge Grass Propane and Supplies. An estimated seven or eight houses in Lodge Grass and many more in the rural area were flooded.

Big Horn County Commissioner John Pretty On Top, who lives in Lodge Grass, said floodwaters also soaked the Baptist Church, the REA Building and every house on the west side of town.

The Red Cross set up a temporary shelter at Lodge Grass High School, which sits on the highest point in town. Speelman said 21 people spent the night there Saturday. Others probably stayed with relatives as the floodwaters advanced, he said. Evacuation was not mandatory, but many took the precaution of leaving.

Pretty On Top said the county had an airplane flying to check for anyone who may be stranded. He said he had heard of people in four vehicles high-centered near Good Luck Road as they tried to get out through back roads.