Some residents of Merritt, B.C., will be returning to their homes this week after the entire city's population was forced to flee due to extreme flooding that caused the complete failure of the municipality's wastewater system last Monday. Relentless rain caused the Coldwater River, which runs through the southern Interior community, to overrun its banks Nov. 15, triggering an evacuation order for all 7,000 residents shortly after 7 a.m.