Pub. date: 2008 | Online Pub. Date: April 25, 2008 | DOI: 10.4135/9781412963893 | Print ISBN: 9781412958783 | Online ISBN: 9781412963893| Publisher:SAGE Publications, Inc.About this encyclopedia
IOWA HAS AN area of 56,272 sq. mi. (145,744 sq. km.), with inland water making up 402 sq. mi. (1,041 sq. Ion.), including 31 natural lakes most formed by glaciers and reservoirs. Iowa's average elevation is 1,100 ft. (335 m.) above sea level, with a range in elevation from 480 ft. (146 m.) at the Mississippi River, to 1,670 ft. (509 m.) in Osceola County. Iowa has 2 million acres of forested land. The topography is central lowland, part of the interior plains. Iowa's rivers drain into the Mississippi River system. Iowa has many small lakes, and dams on smaller rivers have created several reservoirs. Dams on the Mississippi River have created large reservoirs on the eastern state line formed by the Mississippi River. Iowa's climate is fairly uniform throughout the state, with hot, muggy summers, and harsh winters. Des Moines's average January temperature is 20 degrees F (minus 6 ...