Plum Creek is a long fourth-order tributary to the Niobrara River in Brown County, Nebraska.
Plum Creek begins at the confluence of North and South Fork of Plum Creek in the Nebraska Sandhills about southwest of Johnstown, Nebraska and then flows generally northeast to join the Niobrara River about south of Meadville, Nebraska.
Plum Creek drains of area, receives about of precipitation, and is about 2.52% forested.