Primary Physical Features of North AmericaVersion en ligne A concise guide to the major mountain ranges, water systems, and landforms that define the North American continent. par Sihu PARK 1 Appalachian Mountains 2 Rocky Mountains 3 Mount Denali 4 Great Basin Desert 5 Mississippi River 6 Missouri River 7 Saint Lawrence River 8 Yukon River 9 Great Lakes 10 Atlantic Ocean 11 Pacific Ocean 12 Arctic Ocean 13 Hudson Bay 14 Gulf of Mexico 15 Gulf of Saint Lawrence