Stanley Mill Mitigation Site

The Stanley Mill Mitigation Site is an Iowa Department of Transportation project developed specifically to offset vegetation losses associated with highway construction and improvement work that occurs across the state.   

The site totals 315 acres of floodplain lands that are subject to periodic flooding from the Iowa River. Iowa DOT reconstructed ephemeral water conditions that in dry weather times, allow water to slowly seep into the subsoil.  Native emergent wetland vegetation typically found in Iowa floodplains has been planted including  species like: prairie cord grass, cardinal flower and giant cattails. Thousands of bottom land trees have been planted including: silver maple, river birch, shagbark hickory, black walnut, American sycamore, eastern cottonwood, swamp white oak, bur oak ,American elm, silky dogwood, elderberry buttonbush and wild plum.   

Stanley Mill is the name associated with this site due to the history of the Iowa River in pioneer times. Before the Iowa River was dredged straight, the river channel meandered in large loops and curves, as it found its way through the floodplain.  A mill was built near the bluff land, and a dam was constructed to hold back the flow of water.  Farmers could take raw grain to the mill to have it pulverized into much finer sizes for other product uses.  The mill owner/operators were named Stanley.  


Located between Marietta Sand Prairie and Grammer Grove west of Albion.


Activities at the Stanley Mill Mitigation Site: · 

  • Hunting per Iowa DNR rules and regulations is allowed · 
  • Bird Watching
  • Nature Study
  • Photography  

Restricted Activities include:

  • No motor vehicles allowed
  • Removing plants is prohibited
  • Pets must be leashed March 15 through July 15 each year  

Operating Hours & Seasons

Recreational Area Hours are 5:30 a.m. - 10:30 p.m.

Area is open year round.