The Treaty of Washington (1831) was a treaty between the Menominee (an American Indian tribe) and the United States Government. The treaty was initially made and signed on February 8, 1831 in Washington, D.C. In the treaty, the Menominee ceded about 2,500,000 acres (10,000 km2; 3,900 sq mi) of their land in Wisconsin primarily adjacent to Lake Michigan. During the ratification of the treaty in June 1832, the United States Senate modified the treaty to provide additional land for the Stockbridge-Munsee tribe. The Menominee Tribe did not agree to the changes, and the treaty was renegotiated on October 27, 1832 to resolve the differences. These two treaties are commonly referred to singularly as the Treaty of Washington.