Total annual discharge, 1813 km3 /year, in 2010 from the six largest Eurasian rivers (Sev. Dvina, Pechora, Ob, Yenisey, Lena and Kolyma) flowing into the Arctic Ocean was very close to the 1936-2009 long-term mean of 1808 km3 /year. Mean annual discharge, 514 km3 /year, in 2010 from the four large North American Arctic rivers (Mackenzie, Yukon, Back and Peel) was ~3% lower than the long-term mean (529 km3 /year).
Earth Systems Research Center
Arctic Report Card: Update for 2011
NOAA Arctice Program
Shiklomanov and Lammers, 2011: River Discharge, Arctic Report Card: Update for 2011.