South Dakota Conservation Longtime Community Leader and DU Member Supports DU’s Soil Health Programs Legacy for Landowners Conservation easements are a cost-effective and popular way to permanently protect crucial waterfowl habitat on private lands Longtime Supporters Make a Lasting Gift on the Prairies Major sponsors include South Dakota land gift in estate plan Improvements on Sand Lake NWR, South Dakota Ducks Unlimited is working with U.S. Fish and Wildlife Service staff to build a new water control structure and repair a berm on the refuge.