By mid-century, spring stream flow is expected arrive 4 to 9 days earlier, and the probability of high-flow events may increase as much as 80% for some areas of the Northeast.

Submitted by dshannon on

With warmer temperatures and an increase of rain-on-snow events occurring in winter, the Northeast is expected to experience a reduced snowpack and earlier breakup of winter ice on lakes and rivers. The earlier snowmelt runoff will result in more frequent high-flow events in winter and spring. For parts of the northern Northeast region the probability of high-flow events may increase by as much as 80%. Peak streamflow events are projected to shift in timing, occurring 4 to 9 days earlier by mid-century, by the end of the century peak flows may occur 2 to 10 weeks earlier under both the low and high emissions scenarios. The shift in timing and increase in frequency of high-flow events will likely increase flood risk for the Northeast.