Authorities say 300 Roundup residents are cut off after record level flooding washed out part of a road.

Roundup Emergency Official Jeff Gates said Thursday the families cut off are being supplied by boat until the road can be repaired.

Gates says a helicopter will be ready Friday morning for emergency services if needed.

The Milk and Musselshell rivers were receding Thursday after reaching record levels this week, flooding streets and homes in Glasgow and Roundup.

Flooding is also being reported from the Clark Fork River near Missoula and the Sun River in central Montana.

High waters are expected to continue to in several areas through the weekend due to more rain and melting snowpack.

Story from The Associated Press