Physical Geography of the American Midwest

Defining Features of the Midwest Landscape

Rolling Plains

Glacial activity sculpted the region's signature gently sloping hills and valleys. This fertile terrain underpins the Corn Belt's agricultural productivity.

Major River Systems

The Mississippi River dominates, draining much of the region. The Missouri, Ohio, and Illinois Rivers are key tributaries. These waterways enabled historic settlement and modern commerce.

The Great Lakes

Lakes Superior, Michigan, Huron, Erie, and Ontario form the world's largest freshwater system, bordering eight Midwest states. They moderate climate, support shipping, and provide recreation.

Forests

Temperate deciduous forests (oak, maple, hickory) cover northern and eastern areas, turning brilliant colors in autumn. Southern and western edges transition to savanna and prairie.

Grasslands and Prairies

Once vast tallgrass prairies (grasses up to 10 feet) dominated the west. Most converted to farmland; remnants persist in preserves like the Flint Hills.

Continental Climate

Four distinct seasons: hot summers (avg. ~75°F) and cold winters (avg. ~30°F). Low humidity, ample sunshine, and severe weather (tornadoes, blizzards) are characteristic.