[2] Jesse Arnold, who bought the mill in 1852, and his son Joseph replaced the paddle-wheel with a vertical drive hydraulic turbine in 1868.

Wagaman bought the mill in 1898 and modernized the machinery, and his son Fred installed the concrete dam, and added an additional turbine and a wheel house in 1918–1919.

He discontinued the grinding of wheat, which was no longer profitable, and focused on the production of animal feed, corn meal, and electricity.

The Jasper County Conservation Board began restoring the wheel house of the mill to its original operating condition in 1973.

This article about a property in Jasper County, Iowa on the National Register of Historic Places is a stub.