Riverside Bluffs Prairie Hike, 6:30 p.m., Riverside Bluffs Prairie. Meet at the last parking lot on top of the hill in Kirk Hansen Park, along West 19th Street in Sioux City. Join the Woodbury County Conservation Foundation (WCCF) board members on this hike through this native prairie. We will search the hillsides for blooming prairie plants. Wear sturdy walking shoes. Sponsored by WCCF.