Deep floodwaters and the risk of more mudslides that left about 20 people confirmed or presumed dead hampered search and rescue operations on Sunday in southern Japan, including at elderly home facilities where more than a dozen perished and scores are still stranded. Large areas along the Kuma River were swallowed by floodwaters with many houses, buildings and vehicles submerged almost up to their roofs. The rescue continued Sunday for dozens of other residents and caregivers who were still at the riverside care facility Senjuen, where about 60 people were trapped when floodwaters and mud gushed in, officials said.