Karl W. Behrens Memorial Ponds and Woodland is a 29-acre Iowa preserve featuring a series of sandy ponds, dedicated as a biological state preserve in 1982.
The Richard W. Pohl Memorial Preserve at Ames High Prairie is a 22-acre preserve containing a small tallgrass prairie remnant and home to hundreds of species.
Five Ridge Prairie is a 790-acre preserve at the northern end of the Loess Hills, and one fo the largest tracts of land in the Iowa State Preserve System.
Indian Bluffs is an 845-acre, privately owned preserve located southeast of Monticello in Jones County. The area was dedicated as a state preserve in 1981.