Location: Clay County 
Timeline: Completed February 2009
Partners: Iowa DNR, Private Landowners
Funding: North American Wetlands Conservation Act grant, Iowa DNR, Ducks Unlimited

Project Highlights:

Like many other large marshes and shallow lakes in north-central Iowa, Dan Green Slough has experienced a significant decline in waterfowl use during the past several decades due to poor water quality, high water levels, and exploding rough fish populations. Historically, this large 312-acre marsh consisted of a 50:50 mix of high quality wetland plants and open water areas. Unfortunately over time conditions degraded and the slough became extremely turbid and only supported a small ring of aquatic plants along its shore.    

DU and the Iowa Department of Natural Resources Wildlife, Fisheries and Lake Restoration Programs partnered to restore Dan Green Slough. In 2008, DU's engineering staff designed and installed a new water control structure and permanent pumping station. The new structures allow DNR managers to periodically drawdown water levels to improve water quality, enhance habitat conditions, and eliminate nuisance rough fish. 

By working together, DU and the Iowa DNR have been able to accelerate large marsh and shallow lake management efforts throughout the state. The results of this and other Living Lakes Initiative projects will improve water quality, enhance habitat conditions for waterfowl and other wildlife and provide recreational opportunities for Iowans.