Explore the Geography of the United States
From great rivers and freshwater lakes to towering mountain ranges, volcanic landscapes, and protected wilderness, discover the natural features that shape the United States. Explore informative guides to American landforms, waterways, wildlife, national parks, and geographic landmarks.
Understand America’s landforms, waterways, and natural systems.
Understand the Landforms and Natural Features of America
The geography of the United States includes an extraordinary range of physical features, from extensive river systems and inland lakes to mountain ranges, volcanic regions, islands, deserts, and diverse natural habitats. These features influence ecosystems, water resources, regional landscapes, and patterns of human settlement.
Geography of USA brings these subjects together through focused articles on American rivers, lakes, mountains, volcanoes, national parks, wildlife, and landmarks. Explore individual geographic features to learn about their locations, physical characteristics, surrounding environments, and importance within the broader landscape.
Whether you are researching a major U.S. river, comparing freshwater lakes, learning about volcanic landforms, or exploring the ecosystems of a national park, use the categories and subject guides below to find relevant information.
Discover the Geography of the United States
Choose a subject to explore detailed guides to U.S. landforms, waterways, protected natural areas, wildlife, and geographic landmarks.
Rivers in the USA
Explore major American rivers, their courses, tributaries, drainage basins, and roles in regional geography.
Explore U.S. Rivers →Lakes in the USA
Learn about the Great Lakes, inland freshwater systems, saline lakes, and American lake geography.
Explore U.S. Lakes →Volcanoes in the USA
Discover American volcanoes, volcanic regions, calderas, and geological processes that shape landscapes.
Explore Volcanoes →Landmarks in the USA
Learn about notable American places and their geographic, historical, and cultural significance.
Explore Landmarks →National Parks in the USA
Explore protected landscapes, distinctive landforms, ecosystems, and natural features in America’s parks.
Explore National Parks →Islands in the USA
Discover American islands, coastal geography, surrounding waters, and island environments.
Explore U.S. Islands →Wildlife in the USA
Learn about American wildlife, animal habitats, food webs, ecosystems, and native species.
Explore Wildlife →Mountains in the USA
Explore major American peaks, mountain ranges, elevations, and mountainous landscapes.
Explore Mountains →Explore America’s Best-Known Natural Features
Start with major waterways, remarkable geological landscapes, and protected natural areas before exploring more specialized geography topics.
The Mississippi River
Explore one of North America’s major river systems, its extensive drainage basin, important tributaries, and connection to the geography of the central United States.
Explore the Mississippi River →The Great Lakes
Discover the five Great Lakes, their freshwater geography, locations along the U.S.–Canada border, and importance to the surrounding region.
Explore the Great Lakes →Yellowstone National Park
Learn about Yellowstone’s geothermal features, volcanic landscape, ecosystems, wildlife, and distinctive physical geography.
Explore Yellowstone →Major Rivers in the United States
U.S. rivers connect mountains, plains, valleys, and coastal regions. Their courses and drainage basins help explain how water moves across the American landscape.
Explore individual river guides to learn about locations, tributaries, physical characteristics, and regional importance.
Browse All U.S. Rivers →Mississippi River
Explore the main river channel and its extensive drainage basin across central North America.
Read River Guide →Missouri River
Learn about a major Mississippi tributary and its course through the Great Plains.
Read River Guide →Colorado River
Discover the river system associated with the Colorado Plateau and the Grand Canyon region.
Read River Guide →Columbia River
Explore a major Pacific Northwest river and its role in the region’s physical geography.
Read River Guide →Rio Grande
Learn about the river that forms part of the international boundary between the United States and Mexico.
Read River Guide →Ohio River
Understand the Ohio River’s place within the Mississippi River drainage network.
Read River Guide →Hudson River
Discover the river’s course through eastern New York and its surrounding landscape.
Read River Guide →Major Lakes in the United States
American lakes vary in size, depth, water chemistry, origin, and surrounding environment. The Great Lakes form a vast freshwater system, while lakes in the interior West include distinctive saline waters.
Explore lake locations, physical characteristics, and the geography of their surrounding regions.
Browse All U.S. Lakes →Great Lakes
Explore the five connected lakes that make up one of the world’s largest surface freshwater systems.
Read Lake Guide →Lake Superior
Learn about the largest of the Great Lakes by surface area and its northern freshwater setting.
Read Lake Guide →Lake Michigan
Discover the only Great Lake located entirely within the United States.
Read Lake Guide →Great Salt Lake
Explore Utah’s saline lake, its changing water levels, and its distinctive inland basin.
Read Lake Guide →Mountains and Major Peaks in the USA
Mountain geography includes elevation, relief, geological history, climate, and the relationship between peaks and surrounding terrain. American mountain landscapes range from the Cascade Range to Hawaii’s volcanic mountains.
Explore individual peaks and learn about their locations, elevations, and physical settings.
Browse U.S. Mountains →Mount Rainier
Explore a prominent glaciated volcanic peak in Washington’s Cascade Range.
Read Mountain Guide →Mount Hood
Learn about Oregon’s well-known Cascade volcano and its mountainous surroundings.
Read Mountain Guide →Mount Baker
Discover a glaciated volcano in the North Cascades of Washington State.
Read Mountain Guide →Mount Adams
Explore one of the prominent volcanic peaks of the Washington Cascades.
Read Mountain Guide →Mount Shasta
Learn about a major volcanic mountain in northern California.
Read Mountain Guide →Mauna Kea
Discover the Hawaiian mountain known for its great height measured from its underwater base.
Read Mountain Guide →Volcanoes and Volcanic Landscapes in the USA
Volcanic activity has shaped parts of the American West, Alaska, and Hawaii. Volcanoes and calderas provide insight into plate tectonics, magma systems, eruptions, and the long-term development of landscapes.
Explore individual volcanoes and volcanic regions to understand their geological characteristics and locations.
Browse U.S. Volcanoes →Hawaii Volcanoes
Explore Hawaiian volcanic landscapes created by eruptions and long-running volcanic activity.
Read Volcano Guide →Mauna Loa
Learn about the enormous shield volcano that occupies much of Hawaii’s Big Island.
Read Volcano Guide →Mount St. Helens
Discover the Cascade volcano known for its major 1980 eruption and changing volcanic landscape.
Read Volcano Guide →Mount Spurr
Explore an Alaska volcano located west of Anchorage in the Aleutian volcanic arc region.
Read Volcano Guide →Yellowstone Caldera
Learn about the large volcanic caldera associated with Yellowstone’s geothermal features.
Read Volcano Guide →National Parks and Natural Geography
National parks preserve a wide variety of American landscapes, including desert environments, sandstone formations, forests, mountain terrain, geothermal systems, and wildlife habitats.
Explore individual parks to learn about their landforms, ecosystems, and defining natural features.
Browse U.S. National Parks →Yellowstone National Park
Explore geothermal features, the Yellowstone Plateau, wildlife habitats, and volcanic geology.
Read Park Guide →Zion National Park
Learn about sandstone cliffs, canyon landscapes, the Virgin River, and desert ecosystems.
Read Park Guide →Joshua Tree National Park
Discover desert landforms, distinctive vegetation, and the meeting of two desert ecosystems.
Read Park Guide →Famous Landmarks in the United States
American landmarks include natural features, historic sites, and well-known urban destinations. Their locations and surrounding environments connect geography with history, culture, and regional development.
Explore landmark guides to learn about their locations and defining characteristics.
Browse U.S. Landmarks →Times Square
Discover the famous Manhattan destination at the junction of Broadway and Seventh Avenue in New York City.
Read Landmark Guide →More of America’s Natural Geography
Continue exploring the landscapes, habitats, and physical features that make different regions of the United States unique.
Islands in the USA
Explore American islands and coastal environments, including their locations, surrounding waters, landforms, and distinctive geographic settings.
Explore U.S. Islands →Wildlife in the USA
Learn how animals interact with habitats, food webs, climate, and other environmental conditions across America’s varied ecosystems.
Explore U.S. Wildlife →Yellowstone’s Natural Environment
Discover the relationships between geothermal activity, physical geography, wildlife, and ecosystems in one of America’s best-known national parks.
Explore Yellowstone →Continue Exploring U.S. Geography
Browse our geography categories to discover more about American rivers, lakes, mountains, volcanoes, national parks, wildlife, islands, and landmarks.