US Physical featuresVersión en línea Physical features of the United states por Kasey Hershberger 1 Rocky mtns. 2 Cape cod 3 Appalachian mtns. 4 Piedmont 5 Great salt Lk. 6 Cascade mtns. 7 Massachusetts bay 8 Great Plains 9 Pacific Ocean 10 Atlantic ocean 11 Gulf of Mexico 12 Great Smokey mtns. 13 Cumberland Gap 14 Chesapeake bay 15 Sierra Nevada mtns. 16 Lake Champlain 17 Lake Michigan 18 Lake erie 19 Ohio river 20 Rio Grande 21 Lake Huron 22 Mississippi River 23 Hudson River 24 St. Lawrence river 25 Columbia River 26 Lake Ontario 27 Wabash River 28 Arkansas River 29 James river 30 Missouri river 31 Potomac river 32 Lake Superior