November was unusually wet in the United States, with half of the key index stream-gaging stations reporting well above average lows, according to the U.S. Geological Survey (USGS). In combination with the flows of 18 rivers in southern Canada, which are monitored by the USGS in cooperation with the Water Resources Branch of Environment Canada, the total flow of the nation's rivers for November was 1.5 trillion gallons per day, 79% above the the long-term average for the month but still 12% below the previous month's total flow.