Lend a hand in a state park at Statewide Volunteer Day on Sept. 28 9/24/2024 2:42:00 PM View Count 4817 Iowans are invited to lend a hand at the DNR’s eighth annual statewide Volunteer Day on Saturday, Sept. 28. Several parks across the state will be hosting volunteer events to help spruce up trails, buildings and other park amenities.