The Green River is a tributary of the Heart River, approximately 20 mi (32 km) long, in western North Dakota in the United States.

[1] It rises in the prairie country of southwestern Billings County, near Saddle Buttes, and flows ESE past New Hradec, and joins the Heart near Gladstone.

This article related to a river in North Dakota is a stub.

You can help Wikipedia by expanding it.