For the first 300-plus years of American history, rivers played an integral part in the country’s growth. Settlers and explorers ventured up and down rivers to discover new territory, and merchants floated products to market and harnessed the water to power early factories. As time went on, however, Americans took their rivers for granted. Industries dumped pollutants and cities and towns added raw sewage to these waterways, and government agencies built some ill-advised dams and levees that harmed the environment and led to catastrophic flooding. By the 1960s and 1970s, sentiments had changed, beginning with the 1968 passage of the Wild and Scenic Rivers Act. Still, that act today protects less than one-quarter of 1 percent of the country’s rivers and waterways; many U.S. rivers are still under threat from development, pollution, or invasive species. While these problems still exist, tourists, photographers, boaters and anglers can still enjoy these 10 scenic rivers in the United States.