What's the best waterfall in Iowa?

What's the best waterfall in Iowa?  One website has picked Decorah's Dunnings Springs.

www.cheapsim.com, a website devoted to saving money in smart ways, notes, "People travel thousands of miles to visit the world's largest and tallest waterfalls, but there are thousands of waterfalls throughout the United States that are easier and cheaper to enjoy."

The website says people can "explore the park by heading out on the hiking trails -- one goes up each side of the falls."
 
Read more at http://www.cheapism.com/blog/3781/best-waterfalls-in-u-s#ixzz3k2YBpHwR

 (PHOTO: Courtesy of Randy Uhl)