Throughout history, humans have attempted to control the flow of rivers. Generally, living near a river means easy access to water for crops and human needs. However, living near a river can be quite a problem during a flood.
Every year, governments spend millions of dollars building dams, levees, and other structures to control or minimize the effects of floods, particularly along large rivers such as the Mississippi River. How effective are these efforts in controlling floods? To help you answer this question, you'll learn about floods and flood controls on the Mississippi River.