Spencer, IA (northwestiowanow.com) — The Iowa Department of Natural Resources wants you to know that smoke you see emanating from some state parks like Spring Run, Cayler Prairie, and Center Lake in the coming weeks are likely controlled burns. DNR Wildlife Biologist Chris La Rue says the burns in Dickinson, O’Brien, and Lyon Counties are scheduled from mid-March through Mid-May but might need to be delayed until fall because of dry conditions.