The Big Blue River is an 83.8-mile-long (134.9 km)[1] tributary of the Driftwood River in east-central Indiana in the United States.
The Big Blue rises in northeastern Henry County and flows generally southwestwardly through Rush, Hancock, Shelby and Johnson counties, past the towns of New Castle, Knightstown, Carthage, Morristown, Shelbyville and Edinburgh.
It joins Sugar Creek to form the Driftwood River 1 mile (1.6 km) west of Edinburgh.
At the USGS station at Shelbyville, Indiana, the Big Blue River has an approximate discharge of 513 cubic feet per second.
This article related to a river in Indiana is a stub.