A woman and her dogs are recovering after falling through the ice in Mantua. The 32-year-old Heber woman was visiting family in Honeyville when she decided to take her two dogs for a walk around Mantua Reservoir on Sunday morning. But about 9 a.m., the dogs took off onto the iced-over reservoir and fell through, said Mantua Police Chief Mike Johnson. âThe ice is barely formed up here.