It flows generally northwest to join the Sauk River north of Darrington .
The Suiattle River originates from the Suiattle Glacier on the east slopes of Glacier Peak in the Cascade Range .
Suiattle River flows generally northwest to join the Sauk River north of Darrington .
The Suiattle River originates from the Suiattle Glacier on the east slopes of Glacier Peak in the Cascade Range .