Which body of water is part of the united states physical geography

Mississippi - Part of the longest river system in the United States, the Mississippi runs from Minnesota down to New Orleans, Louisiana, where it drains into the Gulf of Mexico. Along the way, the Mississippi drains part of 31 different states.
Missouri - The Missouri River merges with the Mississippi River near St. Louis, Missouri, after traveling eastward through Montana, and draining ten states.
Colorado - The Colorado River runs through the southwest, beginning in the Rocky Mountains, through the Grand Canyon, and finally flowing down into Mexico.
Rio Grande - One of the longest rivers on the continent, the Rio Grande flows from Colorado down to Texas, forming part of the US-Mexico border.

Lakes
Great Lakes - The Great Lakes are located in northeastern United States, along the border between the US and Canada. The collection of five lakes holds the record for the largest group of freshwater lakes in the world. The names of the Great Lakes are Lake Superior, Lake Michigan, Lake Huron, Lake Erie, and Lake Ontario.
Great Salt Lake - Utah's Great Salt Lake, with an area of 1,700 square miles, is the largest salt lake in the western hemisphere.